The plants found in a particular area are known as ________

Deforestation means ______

The Red Data Book gives a list of _________

Insitu conservation is________

Wildlife Protection Act was implemented in ________

The process of placing seeds in the soil is called

Organism that control insects and pests of plant crops is

The method in which water flows over the soil surface and allow it to infiltrate is

Effective microorganism preparation is not used in

Which of the following is not present in Panchagavya?

The chemical mixed with LPG that helps in the detection of its leakage is __________

Which is known as syn gas?

The unit of calorific value of fuel is __________

__________ is the coal of superior quality.

The main component of natural gas is __________

Acids are ________ in taste.

Aqueous solutions of _________ conduct electricity.

In acidic solutions blue litmus changes into ______ colour.

The base is a substance that gives _____ on dissolving in water.

Sodium hydroxide is a ________

Water changes to ice at

Solubility of carbon dioxide in water is high when the

The gas collected at the cathode on electrolysis of water is

Which of the following is a water pollutant?

Permanent hardness of water is due to the presence of __________

Mangalyaan was sent to ________

Chandrayaan - 1 was launched on

_____ is called as Red planet.

Cryogenic fuels are stored at

________ was the first manned mission of NASA to go to the moon.

One of the following is an example of a permanent magnet.

The south pole of a bar magnet and the north pole of a U-shaped magnet will __________.

The shape of the Earth’s magnetic field resembles that of an imaginary __________.

MRI stands for __________.

A compass is used for __________

The Keyboard shortcut is used to copy the selected text

The Keyboard shortcut is used to cut the selected text

If the ruler is not displayed in the screen, __________ option is clicked.

How many types of page orientation are there in Libre office Writer?

The menu used to save the document is

Sound waves travel very fast in

The amplitude of the sound wave decides its

What kind of musical instrument is a sitar?

Find the odd one out.

The range of audible frequency for the human ear is

Tux paint software is used to ________.

Which tool bar is used for drawing and editing controls in tux paint software?

What is the short cut key for undo option?

Tux Math software helps in learning the ________

In Tux Math, space cadet option is used for_________.

Adolescence is the period of life between _____________ years of age.

The period at which an organism attains sexual maturity is called _____________

During puberty, the region below the waist become wider in _____________

Adam’s apple is the growth of the ________

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

Which one of the following organisms lack muscles and skeleton for movement?

__________ joints are immovable.

External ear (pinna )is supported by

Cockroach moves with the help of its

Which one of the following categories of vertebrae are correctly numbered.

The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

Cathode rays are made up of

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

Which of the following statements made by Dalton has not undergone any change?

In all atoms of an element

Which of the following is true about oxygen?

Aerated water contains

Solvay process is a method to manufacture

Carbon dioxide with water changes

Which of the following is known as azote?

When an ebonite rod is rubbed with fur, the charge acquired by the fur is

The electrification of two different bodies on rubbing is because of the transfer of

Which of the following a simple circuit must have?

An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

Fuse is

Heat is a form of ________.

If you apply some heat energy to a substance, which of the following can take place in it?

Which of the following substances will absorb more heat energy?

If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

The process of converting a liquid into a solid is called_________.

Who is the father of computer?

Which one of the following is an output device?

Which one of the following is an input device?

Pen drive is _____device.

Fifth generation computer has ___________ Intelligence.

Maintenance of constant internal environment of the body is known as _________

In the absence of oxygen, glucose is broken down in to ________.

_________ cells are specialised cells that can be transformed into any kind of cells.

Osmosis is the movement of water molecules from a ______.

The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

An example for colonial form of algae is

Floridian starch is a reserve food material of

The edible mushroom is _________

The first vascular cryptogams in land plants are ________.

Binominal Nomenclature was first introduced in the year of

Micro organisms are measured in ______.

_______ shows both living and nonliving characteristics.

______ is a prokaryotic micro organisms.

Based on shape, the bacteria are classified into _______ types.

The plant body of algae is called as ______.

The burning of matchstick is an example for chemical reaction based on______

The pigment responsible for browning of apples is______.

Limestone contains ______ mainly.

In Haber’s process of producing ammonia ______ is used as a catalyst.

______ is responsible for Global warming.

The liquid metal used in thermometers is

Which one of the element name not derived from planet?

A form of non-metal which has high ductility is

The property which allows metals to be hammered into their sheets is ___________

Pencil lead contains

The spherical mirror with a reflecting surface curved inward is called

The spherical mirror used as a rear view mirror in the vehicle is

The distance from the pole to the focus is called

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

The refractive index of water is

Pressure exerted by a liquid is increased by

Unit of pressure is

The value of the atmospheric pressure at sea level is

Pascal’s law is used in

Which of the following liquids has more viscosity?

Electric current is a ______quantity

Amount of substance is

Which one of the following devices is used to measure electric current

Closeness of two or more measured values is called as ______

Which of the following statements  is wrong?

The Keyboard shortcut is used to copy the selected text

The Keyboard shortcut is used to cut the selected text

If the ruler is not displayed in the screen, __________ option is clicked.

How many types of page orientation are there in Libre office Writer?

The menu used to save the document is

The plants found in a particular area are known as ________

Deforestation means ______

The Red Data Book gives a list of _________

Insitu conservation is________

Wildlife Protection Act was implemented in ________

Which of the following parts of our body help us in movement?
(i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

__________ joints are immovable.

External ear (pinna )is supported by

Cockroach moves with the help of its

Which one of the following categories of vertebrae are correctly numbered.

The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

Cathode rays are made up of

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

Which of the following statements made by Dalton has not undergone any change?

In all atoms of an element

Which of the following is true about oxygen?

Aerated water contains

Solvay process is a method to manufacture

Carbon dioxide with water changes

Which of the following is known as azote?

When an ebonite rod is rubbed with fur, the charge acquired by the fur is

The electrification of two different bodies on rubbing is because of the transfer of

Which of the following a simple circuit must have?

An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

Fuse is

Heat is a form of ________.

If you apply some heat energy to a substance, which of the following can take place in it?

Which of the following substances will absorb more heat energy?

If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

The process of converting a liquid into a solid is called_________.

Who is the father of computer?

Which one of the following is an output device?

Which one of the following is an input device?

Pen drive is _____device.

Fifth generation computer has ___________ Intelligence.

Adolescence is the period of life between _____________ years of age.

The period at which an organism attains sexual maturity is called _____________

During puberty, the region below the waist become wider in _____________

Adam’s apple is the growth of the ________

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

Tux paint software is used to ________.

Which tool bar is used for drawing and editing controls in tux paint software?

What is the short cut key for undo option?

Tux Math software helps in learning the ________

In Tux Math, space cadet option is used for_________.

Sound waves travel very fast in

Which of the following are the characteristics of vibrations?
i. Frequency
ii. Time period
iii. Pitch
iv. Loudness

The amplitude of the sound wave decides its

What kind of musical instrument is a sitar?

Find the odd one out.

A magnet attracts _______.

One of the following is an example of a permanent magnet.

The south pole of a bar magnet and the north pole of a U-shaped magnet will __________.

MRI stands for __________.

A compass is used for __________

Which of the following is a celestial body?

Mangalyaan was sent to ________

Chandrayaan - 1 was launched on

_____ is called as Red planet.

Which of the following is the working principle of Rockets?

Water changes to ice at

Solubility of carbon dioxide in water is high when the

The gas collected at the cathode on electrolysis of water is

Which of the following is a water pollutant?

Permanent hardness of water is due to the presence of __________

Acids are ________ in taste.

Aqueous solutions of _________ conduct electricity.

In acidic solutions blue litmus changes into ______ colour.

The base is a substance that gives _____ on dissolving in water.

Sodium hydroxide is a ________

The chemical mixed with LPG that helps in the detection of its leakage is __________

Which is known as syn gas?

The unit of calorific value of fuel is __________

__________ is the coal of superior quality.

The main component of natural gas is __________

The process of placing seeds in the soil is called

Organism that control insects and pests of plant crops is

The method in which water flows over the soil surface and allow it to infiltrate is

Effective microorganism preparation is not used in

Which of the following is not present in Panchagavya?

__________ is tough and thick white sheath that protect the inner parts of the eye.

In the absence of oxygen, glucose is broken down in to ________.

The process of air passing in and out the lungs is called ___________.

Osmosis is the movement of water molecules from a ______.

The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

Floridian starch is a reserve food material of

Soil erosion is prevented by____________plants.

The well-developed sporophytic plant body is seen in

Penicillin is an antibiotic, which is extracted from

Micro organisms are measured in ______.

_______ shows both living and nonliving characteristics.

______ is a prokaryotic micro organisms.

Based on shape, the bacteria are classified into _______ types.

The plant body of algae is called as ______.

If we apply a force against the direction of motion of a body, then the body will

Unit of pressure is

Pascal’s law is used in

Which of the following liquids has more viscosity?

The unit of viscosity is

Burning of paper is a______ change.

______ metal undergoes rusting.

Brine is a concentrated solution of ______.

Which of the following factor induces electrolysis?

Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______

Matter is composed of

The Pictorial symbol for water given by the alchemists was

Symbol of Mercury is

Which one of metal possess low tensile strength?

The non-metal which conduct current is

Which of the following has curved reflecting surface?

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

Focal length is equal to half of the

If the image and object distance is same, then the object is placed at

Which one the following systems of unit is the British System of unit?

SI unit of temperature is __________

Luminous intensity is the intensity of ________

SI unit stands for

Quantities other than base quantities are called as

Amount of substance is

The unit of viscosity is

Which one of metal possess low tensile strength?

Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______

Binominal Nomenclature was first introduced in the year of

Amount of substance is

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

Which one of metal possess low tensile strength?

Limestone contains ______ mainly.

Floridian starch is a reserve food material of

_______ can be used as memory or storage element in the computers.

The unit of charge is ______

Rain drops are spherical in nature because of _________

An imaginary line perpendicular to the reflecting surface is called

Compound obtained from living sources such as plants and animals are called

_______ can be used as memory or storage element in the computers.

The unit of charge is ______

The unit for surface tension is _________

In which mirror the following statement is labeled?

The smallest particle of an element is__________

Electric current (I) = ____________

If the area of contact is greater, then the ______ will be greater.

When the angle of inclination decreases the number of images formed _________

The compound used for the sterilisation of drinking water is________

Enzymes and yeasts are called

The unit of charge is ______

The unit for surface tension is _________

An imaginary line perpendicular to the reflecting surface is called

Which of the following element is named after a scientist?

The brown colour of a cut apple is due to

__________ is the measure of the perceived power of light.

Rain drops are spherical in nature because of _________

If the area of contact is greater, then the ______ will be greater.

In which mirror the following statement is labeled?

Which of the following does not possess metallic lustre?

Amount of substance is

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

The non-metal which conduct current is

In Haber’s process of producing ammonia ______ is used as a catalyst.

The edible mushroom is _________

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

Which tool bar is used for drawing and editing controls in tux paint software?

Find the odd one out.

One of the following is an example of a permanent magnet.

Mangalyaan was sent to ________

Pascal’s law is used in

The refractive index of water is

______ metal undergoes rusting.

An example for colonial form of algae is

Osmosis is the movement of water molecules from a ______.

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

What kind of musical instrument is a sitar?

A magnet attracts _______.

Chandrayaan - 1 was launched on

The gas collected at the cathode on electrolysis of water is

Luminous intensity is the intensity of ________

The value of the atmospheric pressure at sea level is

The distance from the pole to the focus is called

Symbol of Mercury is

The burning of matchstick is an example for chemical reaction based on______

SI unit of temperature is __________

Electric current (I) = ____________

The distance from the pole to the focus is called

Mirrors which magnify the object placed close to them.

The property which allows metals to be hammered into their sheets is ___________

__________ is the measure of the perceived power of light.

Pressure exerted by a liquid is increased by

The distance from the pole to the focus is called

An imaginary line perpendicular to the reflecting surface is called

A form of non-metal which has high ductility is

Luminous intensity is the intensity of ________

The unit of charge is ______

Pascal’s law is used in

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

When the angle of inclination decreases the number of images formed _________

SI unit of temperature is __________

The unit for surface tension is _________

The spherical mirror with a reflecting surface curved inward is called

The Pictorial symbol for water given by the alchemists was

Which of the following element is named after a scientist?

Closeness of two or more measured values is called as ______

Normal temperature of the human body is between

Which of the following liquids has more viscosity?

Focal length is equal to half of the

Mirrors which magnify the object placed close to them.

SI unit of temperature is __________

If the area of contact is greater, then the ______ will be greater.

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

The property which allows metals to be hammered into their sheets is ___________

Which of the following element is named after a scientist?

Electric current (I) = ____________

When the angle of inclination decreases the number of images formed _________

The burning of matchstick is an example for chemical reaction based on______

Rusting of iron is a _________ change.

Floridian starch is a reserve food material of

_______ can be used as memory or storage element in the computers.

Rain drops are spherical in nature because of _________

An imaginary line perpendicular to the reflecting surface is called

Which of the following element is named after a scientist?

Enzymes and yeasts are called

SI unit of temperature is __________

_______ can be used as memory or storage element in the computers.

Unit of pressure is

Focal length is equal to half of the

An imaginary line perpendicular to the reflecting surface is called

Amount of substance is

Pascal’s law is used in

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

Mirrors which magnify the object placed close to them.

Which one of the element name not derived from planet?

Electric current (I) = ____________

An imaginary line perpendicular to the reflecting surface is called

The chemical reactions carried out by the passage of electricity is called.

_______ shows both living and nonliving characteristics.

Binominal Nomenclature was first introduced in the year of

Quantities other than base quantities are called as

Which of the following liquids has more viscosity?

Focal length is equal to half of the

Which one of metal possess low tensile strength?

Limestone contains ______ mainly.

__________ is the measure of the perceived power of light.

__________ form the perfect image of an object

Compound obtained from living sources such as plants and animals are called

_________is a ball-shaped bacteria.

_____ is the giant kelp

Normal temperature of the human body is between

Rain drops are spherical in nature because of _________

Mirrors which magnify the object placed close to them.

Which of the following element is named after a scientist?

Decomposition of limestone is an example for chemical reaction based on __________

Which one the following systems of unit is the British System of unit?

Unit of pressure is

The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

Symbol of Mercury is

Brine is a concentrated solution of ______.

Quantities other than base quantities are called as

Electric current (I) = ____________

Which of the following liquids has more viscosity?

The unit for surface tension is _________

Focal length is equal to half of the

SI unit of temperature is __________

The unit of charge is ______

The unit of viscosity is

Focal length is equal to half of the

In which mirror the following statement is labeled?

Closeness of two or more measured values is called as ______

Which of the following liquids has more viscosity?

If the image and object distance is same, then the object is placed at

An imaginary line perpendicular to the reflecting surface is called

The property which allows metals to be hammered into their sheets is ___________

Luminous intensity is the intensity of ________

Rain drops are spherical in nature because of _________

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

When the angle of inclination decreases the number of images formed _________

Which one of metal possess low tensile strength?

Electric current is a ______quantity

Pressure exerted by a liquid is increased by

The distance from the pole to the focus is called

A form of non-metal which has high ductility is

The burning of matchstick is an example for chemical reaction based on______

Luminous intensity is the intensity of ________

Quantities other than base quantities are called as

Normal temperature of the human body is between

_______ can be used as memory or storage element in the computers.

Electric current (I) = ____________

Who is the father of computer?

Which one of the following is an output device?

Which one of the following is an input device?

Pen drive is _____device.

First generation computer has_________

_________make up organs

_________are called as building blocks of life

_______tissues for conduction of nerve impalses

_____is a thin transparent membrane that is spread across the sclera

_________million alveoli located at the end of branchial tubes

The estimated number of species on the earth is _________ million

______ is the earliest system of classification in plants.

_____ is the giant kelp

______ is used as a food for domestic animals

Cercospora personata causes _________

_________is a ball-shaped bacteria.

__________is an example for Lophotrichous

Common cold in human is caused by __________

Plasmodium belongs to _________ type of protozoan.

__________ is an acid - loving bacteria

Rusting of iron is a _________ change.

Decomposition of limestone is an example for chemical reaction based on __________

The chemical reactions carried out by the passage of electricity is called.

Enzymes and yeasts are called

The brown colour of a cut apple is due to

A form of non-metal which has high ductility is

Which one of metal possess low tensile strength?

Molecule ______ D. smallest unit of a substance

Compound obtained from living sources such as plants and animals are called

The compound used for the sterilisation of drinking water is________

The spherical mirror with a reflecting surface curved inward is called

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

Mirrors which magnify the object placed close to them.

In which mirror the following statement is labeled?

When the angle of inclination decreases the number of images formed _________

If we apply a force against the direction of motion of a body, then the body will

The unit of viscosity is

Rain drops are spherical in nature because of _________

The unit for surface tension is _________

If the area of contact is greater, then the ______ will be greater.

Luminous intensity is the intensity of ________

SI unit stands for

Quantities other than base quantities are called as

__________ is the measure of the perceived power of light.

The unit of charge is ______

Heat is a form of ________.

Conduction is the heat transfer which takes place in a____________.

Fuse is

Aerated water contains

Carbon dioxide with water changes

Which one of the following statements about thermal conductivity is correct? Give reason.
a) Steel > Wood > Water
b) Steel > Water > Wood
c) Water > Steel > Wood
d) Water > Wood > Steel

Soda bottle bursts sometimes when it is opened during summer. Why?

How do astronauts breathe when they go beyond earth’s atmosphere?

Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?

How can we prove that the electrons carry negative charge?

Write a note on thermostat.

Explain the working of thermos flask.

Explain three ways of charge transfer.

What is electroscope? Explain how it works?

How lightning takes place?

What are the effects of heat?

Name three types of heat transfer

What is conduction?

What is earthing?

What is electric circuit?

Adolescence is the period of life between _____________ years of age.

The period at which an organism attains sexual maturity is called _____________

During puberty, the region below the waist become wider in _____________

Adam’s apple is the growth of the ________

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

Which of the following parts of our body help us in movement?
(i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

Which one of the following organisms lack muscles and skeleton for movement?

__________ joints are immovable.

Why do underwater divers wear fin-like flippers on their feet ?

External ear (pinna )is supported by

The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

Cathode rays are made up of

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

Which of the following statements made by Dalton has not undergone any change?

In all atoms of an element

Which of the following is true about oxygen?

Aerated water contains

Solvay process is a method to manufacture

Carbon dioxide with water changes

Which of the following is known as azote?

When an ebonite rod is rubbed with fur, the charge acquired by the fur is

The electrification of two different bodies on rubbing is because of the transfer of

Which of the following a simple circuit must have?

An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

Fuse is

Heat is a form of ________.

If you apply some heat energy to a substance, which of the following can take place in it?

Which of the following substances will absorb more heat energy?

If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

The process of converting a liquid into a solid is called_________.

Tux paint software is used to ________.

Which tool bar is used for drawing and editing controls in tux paint software?

What is the short cut key for undo option?

Tux Math software helps in learning the ________

In Tux Math, space cadet option is used for_________.

The period at which an organism attains sexual maturity is called _____________

During puberty, the region below the waist become wider in _____________

___________ are the chemical substances, secreted by endocrine glands.

During menstruation, the progesterone level is ___________

___________ intake needs to be increased to prevent osteoporosis in later life.

Which of the following parts of our body help us in movement?
(i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

Which one of the following organisms lack muscles and skeleton for movement?

__________ joints are immovable.

Why do underwater divers wear fin-like flippers on their feet ?

Which one of the following categories of vertebrae are correctly numbered.

The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

Cathode rays are made up of

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

Which of the following statements made by Dalton has not undergone any change?

In all atoms of an element

Which of the following is true about oxygen?

Aerated water contains

Solvay process is a method to manufacture

Carbon dioxide with water changes

Which of the following is known as azote?

When an ebonite rod is rubbed with fur, the charge acquired by the fur is

The electrification of two different bodies on rubbing is because of the transfer of

Which of the following a simple circuit must have?

An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

Fuse is

Heat is a form of ________.

Which of the following substances will absorb more heat energy?

If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

The process of converting a liquid into a solid is called_________.

Conduction is the heat transfer which takes place in a____________.

The period at which an organism attains sexual maturity is called _____________

During puberty, the region below the waist become wider in _____________

Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

The sperm is produced by ____________

During menstruation, the progesterone level is ___________

Which one of the following organisms lack muscles and skeleton for movement?

__________ joints are immovable.

Why do underwater divers wear fin-like flippers on their feet ?

External ear (pinna )is supported by

Cockroach moves with the help of its

The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

Cathode rays are made up of

In water, hydrogen and oxygen are combined in the ratio of _______by mass.

Which of the following statements made by Dalton has not undergone any change?

A negatively charged ion is called _________, while positively charged ion is called __________

Which of the following is true about oxygen?

Aerated water contains

Solvay process is a method to manufacture

Which of the following is known as azote?

______ is called as vital life

What is called static pressure of the liquid?

Why do deep sea divers wear special suits while diving?

Cooking in a place located at a higher altitude is difficult why?

What is known as atmospheric pressure?

What are the changes happen while applying a force?

Define the refractive index of a medium.

State the Snell’s law of refraction

Tabulate the images formed by a convex mirror.

Name the rays which involved in reflection of light.

Why silver metal is used to make mirror?

Explain the role of yeast in making cakes and buns in a bakery?

Burning of fossil fuels is responsible for global warming. Justify the statement.

Is rusting good for Iron materials? Explain.

Do all the fruits and vegetables undergo browning? Explain.

Classify the following day to day activities based on chemical reactions by physical contact, solutions of reactants, heat, light, electricity and catalyst.
a) burning of crackers during festivals
b) Fading of coloured clothes on drying under sunlight
c) Cooking of eggs.
d) Charging of batteries.

Write the four types of bacteria, based on their shape.

What are antibiotics?

What are pathogens?

How diseases causing micro organisms enter into human beings?

Why micro organisms are essential for agriculture?

What is respiration?

Define basal metabolism?

Define organ

What is the significance of stem cell?

Write down the classification of animal tissues.

Write a short note on natural system of classification

Write any three economic importance of algae.

Write the differences between algae and fungi.

How many classes are there in Bryophytes? What are they?

Write any four characters of pteridophytes.

What is a compound? Give example.

What are Semi conductors? Give example.

What are inorganic compounds? Give example.

What are organic compounds? Give example.

Give some uses of metalloids

Define - mole.

What are the differences between Plane angle and solid angle?

Give any two uses of super conductors

When 3 A of current flows through the circuit for 5 seconds, calculate the charge?

Convert i) 90° into radian,
ii) \(\frac { \pi }{ 6 } \) into degrees.

When an ebonite rod is rubbed with fur, the charge acquired by the fur is

An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

Fuse is

_______takes place by rubbing objects together.

The body which has lost electrons becomes ________

Heat is a form of ________.

If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

Conduction is the heat transfer which takes place in a____________.

A calorimeter is a device used to measure the________.

_______ is defined as the amount of heat required to raise the temperature of 1kg of a substance by 1°C.

If we apply a force against the direction of motion of a body, then the body will

Pascal’s law is used in

The unit of viscosity is

Rain drops are spherical in nature because of _________

If the area of contact is greater, then the ______ will be greater.

Which one the following systems of unit is the British System of unit?

SI unit of temperature is __________

SI unit stands for

Quantities other than base quantities are called as

The solid angle is measured in _______.

Name the two types of software

Write a short note on Data.

Name any four input devices.

Define Control unit

Explain the classification of computer.

What is cell differentiation?

State different types of tissues.

Mention the function of ‘Alveoli’?

Name the processes by which air enters and comes out of our lungs?

Define Metabolism?

Define Thallus.

What is mean by Binomial Nomenclature? give example.

Write any two characters of dicotyledons.

Seeds of gymnosperm plants are naked. Why?

Write any two economic importance of fungi.

Write the name of any nitrogen fixing bacteria. 

Name the bacteria used in the production of vinegar.

Write the names of any three protozoans.

Who discovered penicillin?

Which diseases can be prevented by vaccination?

Define a chemical reaction.

Define catalysis

What happens when an iron nail is placed in copper sulphate solution?

What is pollution?

What is Tarnishing? Give an example.

Name two soft metals that can be cut with a knife.

Why are bells made of metals?

What does a chemical symbol represent?

Mention any three compounds that exist in liquid state.

Write three properties of metalloids.

SI unit of temperature is __________

Unit of pressure is

The distance from the pole to the focus is called

Symbol of Mercury is

_______ is used to measure electric current.

The radius of curvature of a spherical mirror is 20 cm. Find its focal length.

Focal length of a spherical mirror is 7 cm. What is its radius of curvature?

If two plane mirrors are inclined to each other at an angle of 90°, find the number of images formed.

Speed of light in air is 3 × 108 ms^-1 and the speed of light in a medium is 2 × 10⁸ ms^-1. Find the refractive index of the medium with respect to air.

Refractive index of water is 4/3 and the refractive index of glass is 3/2. Find the refractive index of glass with respect to the refractive index of water.

A stone weighs 500 N. Calculate the pressure exerted by it if it makes a contact with a surface of area 25 cm².

Give two examples to verify that a force changes the shape of a body.

Give two examples to verify that a force tends to change the static condition of a body.

Taking out paste from a tooth paste tube is an example to highlight which physical property?

How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?

What is the unit of mass in FPS system?

How many base quantities are included in SI system?

Mention the types of clocks based on their display.

How many times will the ‘minute hand’ rotate in one hour?

If 2 coulomb of charge flows through a circuit for 10 seconds, calculate the current.

Write a short note on different types of clocks.

Describe an experiment to prove that the pressure in a liquid increases with depth.

What is reflection? Write short notes on regular and irregular reflection?

Explain the three types of pollution.

Write a short note on bacteria and its structure.

Who is the father of computer?

Which one of the following is an output device?

Which one of the following is an input device?

Pen drive is _____device.

Fifth generation computer has ___________ Intelligence.

Osmosis is the movement of water molecules from a ______.

The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

______ is a good example for anaerobic respiration.

_______ nerve is located at the end of the eyes behind the retina.

The size of the cells are measured in units of __________.

Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

An example for colonial form of algae is

The well-developed sporophytic plant body is seen in

Penicillin is an antibiotic, which is extracted from

The word ‘Taxonomy’ is derived from __________.

Micro organisms are measured in ______.

_______ shows both living and nonliving characteristics.

______ is a prokaryotic micro organisms.

__________ Vaccine is used to cure foot and mouth disease

Causative organism for rabies is ___________

Burning of paper is a______ change.

______ metal undergoes rusting.

Which of the following factor induces electrolysis?

Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______

______ is the basic material to manufacture urea.

Matter is composed of

Which one of metal possess low tensile strength?

The property which allows metals to be hammered into their sheets is ___________

The element which possess character of both metals and non metals are called_______.

Material which has a definite volume but no definite shape and has one free surface is called as ______

Which of the following has curved reflecting surface?

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

Focal length is equal to half of the

Nature of the images formed by a convex mirror is _________.

It the angle of incidence is 45°, then the angle of reflection is ______.

If we apply a force against the direction of motion of a body, then the body will

Pressure exerted by a liquid is increased by

The unit of viscosity is

The pressure of a liquid column _____ with the depth of the column.

The property of _____ of a liquid surface enables the water droplets to move upward in plants.

SI unit of temperature is __________

SI unit stands for

Quantities other than base quantities are called as

One mole of a substance contains _______ atoms or molecules.

The uncertainty in measurement is called as _______.

__________ is tough and thick white sheath that protect the inner parts of the eye.

Maintenance of constant internal environment of the body is known as _________

In the absence of oxygen, glucose is broken down in to ________.

_____is a thin transparent membrane that is spread across the sclera

_________million alveoli located at the end of branchial tubes

Who is the father of computer?

Which one of the following is an output device?

Which one of the following is an input device?

Example of Application program

Which of the following component are used in fourth generation?

The first vascular cryptogams in land plants are ________.

The well-developed sporophytic plant body is seen in

Binominal Nomenclature was first introduced in the year of

______ is used as a food for domestic animals

Cercospora personata causes _________

Micro organisms are measured in ______.

_______ shows both living and nonliving characteristics.

______ is a prokaryotic micro organisms.

Plasmodium belongs to _________ type of protozoan.

__________ is an acid - loving bacteria

Burning of paper is a______ change.

The burning of matchstick is an example for chemical reaction based on______

______ metal undergoes rusting.

Rusting of iron is a _________ change.

Decomposition of limestone is an example for chemical reaction based on __________

Symbol of Mercury is

A form of non-metal which has high ductility is

Which one of metal possess low tensile strength?

The property which allows metals to be hammered into their sheets is ___________

The non-metal which conduct current is

Which of the following has curved reflecting surface?

The distance from the pole to the focus is called

Focal length is equal to half of the

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

The refractive index of water is

Which of the following liquids has more viscosity?

The unit of viscosity is

Even if we tilt the barometric tube at various angles, the level of mercury will______

Rain drops are spherical in nature because of _________

The unit for surface tension is _________

Which one the following systems of unit is the British System of unit?

Luminous intensity is the intensity of ________

Quantities other than base quantities are called as

__________ is the measure of the perceived power of light.

Electric current (I) = ____________

Quantities other than base quantities are called as

Which of the following statements  is wrong?

Pressure exerted by a liquid is increased by

The refractive index of water is

An imaginary line perpendicular to the reflecting surface is called

SI unit stands for

The unit for surface tension is _________

The liquid metal used in thermometers is

Burning of paper is a______ change.

Limestone contains ______ mainly.

Which one the following systems of unit is the British System of unit?

SI unit stands for

Unit of pressure is

Matter is composed of

Pencil lead contains

List out the base quantities with their units.

Give the different types of friction and explain each with an example.

Explain how friction can be minimised.

Explain the images formed by a concave mirror?

Speed of light in air is 3 × 10⁸ m s^–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.

Assertion: The SI system of units is the suitable system for measurements.
Reason: The SI unit of temperature is Kelvin.
a. Both assertion and reason are true and reason is the correct explanation of the assertion.
b. Both assertion and reason are true but reason is not the correct explanation of the assertion.
c. Assertion is true, but reason is false.
d. Both assertion and reason are false.

Assertion: Avogadro’s number is the number of atoms in one mole of substance.
Reason: Avogadro’s number is a constant
a. If both assertion and reason are true and reason is the correct explanation of the assertion.
b. If both assertion and reason are true but reason is not the correct explanation of the assertion.
c. Assertion is true, but reason is false.
d. Assertion is false, but reason is true.

Assertion: Broad straps are used in bags.
Reason: Broad straps last for long life.
a. Both assertion and reason are true and reason is the correct explanation of assertion.
b. Both assertion and reason are true, but reason is not the correct explanation of assertion.
c. Assertion is true, but reason is false.
d. Both assertion and reason are false.

Assertion: Algae are heterotrophic.
Reason: They don’t have chlorophyll.
(a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.

Assertion (A): Some algae are living as colonial form.
Reason (R): Some of the algae are Symbionts.
a. Both are correct
b. Both are wrong
c. A is correct R is wrong
d. A is wrong R is correct

Which one the following systems of unit is the British System of unit?

Luminous intensity is the intensity of ________

SI unit stands for

Unit of pressure is

The unit of viscosity is

Who is the father of computer?

Which one of the following is an input device?

Fifth generation computer has ___________ Intelligence.

First generation computer has_________

Example of Application program

__________ is tough and thick white sheath that protect the inner parts of the eye.

The process of air passing in and out the lungs is called ___________.

_______tissues for conduction of nerve impalses

_________million alveoli located at the end of branchial tubes

_______ is the structural and functional unit of living organisms.

Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

The first vascular cryptogams in land plants are ________.

Binominal Nomenclature was first introduced in the year of

Penicillin is an antibiotic, which is extracted from

______ is the earliest system of classification in plants.

Micro organisms are measured in ______.

______ is a prokaryotic micro organisms.

Based on shape, the bacteria are classified into _______ types.

_________is a ball-shaped bacteria.

Common cold in human is caused by __________

Burning of paper is a______ change.

The burning of matchstick is an example for chemical reaction based on______

Brine is a concentrated solution of ______.

In Haber’s process of producing ammonia ______ is used as a catalyst.

______ is responsible for Global warming.

Matter is composed of

The Pictorial symbol for water given by the alchemists was

Symbol of Mercury is

Which one of metal possess low tensile strength?

The non-metal which conduct current is

Which of the following has curved reflecting surface?

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

The distance from the pole to the focus is called

If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

The refractive index of water is

If we apply a force against the direction of motion of a body, then the body will

The unit of viscosity is

_______is the force acting perpendicularly on any given surface area of a body

The unit for surface tension is _________

If the area of contact is greater, then the ______ will be greater.

Electric current is a ______quantity

SI unit of temperature is __________

_______ can be used as memory or storage element in the computers.

__________ is the measure of the perceived power of light.

The unit of charge is ______

If we apply a force against the direction of motion of a body, then the body will

Which of the following liquids has more viscosity?

The unit of viscosity is

Name two instruments, which help to measure the pressure of a fluid.

Define one atmosphere.

Burning of paper is a______ change.

The burning of matchstick is an example for chemical reaction based on______

______ metal undergoes rusting.

The pigment responsible for browning of apples is______.

Which of the following factor induces electrolysis?

Electric current is a ______quantity

SI unit of temperature is __________

Amount of substance is

Luminous intensity is the intensity of ________

Which one of the following devices is used to measure electric current