The height of a tree can be measured by

(a)

Metre scale

(b)

plastic ruler

(c)

Metre rod

(d)

measuring tape

Volume of liquid is usually measured___________

(a)

litres

(b)

grams

(c)

nano

(d)

kilo

The matric system of units was created by the________in 1790.

(a)

Italy

(b)

Australia

(c)

Russia

(d)

French

Unit of speed is__________

(a)

m

(b)

s

(c)

kg

(d)

m/s

Periodic motion among the following is___________

(a)

sabling swing in wind

(b)

revolution of the moon around the earth

(c)

a coconut falling from a tree

(d)

paper flight moving

A___________ is the fastest land animal

(a)

Horse

(b)

Lion

(c)

Cheetah

(d)

Tiger

A cheetah running with an average speed of_____________

(a)

112 kmIh

(b)

121 km/h

(c)

211 km/h

(d)

122 km/h

Lighter impurities like dust when mixed with rice or pulses can be removed by __________

(a)

filtration

(b)

sedimentation

(c)

decantation

(d)

winnowing

A standard sheet of paper is about___________ atoms thick.

(a)

Thousands

(b)

Crores

(c)

Lakhs

(d)

Million

We mix rice, dal, salt, chillies, pepper, ghee and other ingredients to make pongal. So pongal is also a ___________

(a)

Mixture

(b)

Compound

(c)

Element

(d)

Matter

The habitat of water hyacinth is

(a)

Aquatic

(b)

Terrestrial

(c)

Desert

(d)

Mountain

On the lower side of the leaf there are tiny pores or openings known as ____________

(a)

Leaf base

(b)

mid rib

(c)

petiole

(d)

stomato

___________ is the longest river in the world.

(a)

Sutlej

(b)

Yellow

(c)

Nile

(d)

Congo

The first land plants are____________

(a)

Neem tree

(b)

hibiscus'

(c)

banyan tree

(d)

mosses and liver worts

Which of the following cannot be called as a habitat?

(a)

A desert with camels

(b)

A pond with fish and snails

(c)

Cultivated land with grazing cattle

(d)

A jungle with wild animals

Polar bear and Penguins dwell in___________.

(a)

Cold region

(b)

Hot region

(c)

Cold and Hot region

(d)

Forest region

Lizards are walk with four legs and is known as

(a)

Bipedal

(b)

Tripedal

(c)

Monopedal

(d)

quadripedal

We should include fruits and vegetables in our diet, because _______.

(a)

They are the best source of Carbohydrates

(b)

They are the best source of Proteins

(c)

They are rich in minerals and Vitamins

(d)

They have high water content

Beri Beri is caused due to the deficiency of________

(a)

Vitamin C

(b)

Vitamin D

(c)

Vitamin K

(d)

Vitamin B

Any human being should take minimum ___________ of water every day.

(a)

2 liters

(b)

3 liters

(c)

8 liters

(d)

6 liters

When was the first computer introduced?

(a)

1980

(b)

1947

(c)

1946

(d)

1985

Who is the computer’s first programmer?

(a)

Lady Wellington

(b)

Augusta ado Lovelace

(c)

Mary Curie

(d)

Mary Comb

An iron ball at 50°C is dropped in a mug containing water at 50^o C. The heat will

(a)

flow from iron ball to water

(b)

not flow from iron ball to water or from water to iron ball

(c)

flow from water to iron ball

(d)

increase the temperature of both

Electricity is produced in

(a)

transformer

(b)

power station

(c)

electric wire

(d)

television

Choose the symbol for battery

(a)

(b)

(c)

(d)

_____________

Drying of wet clothes in air is an example of

(a)

Chemical change

(b)

Undesirable change

(c)

irreversible change

(d)

physical change

Formation of curd from milk is

(a)

a reversible change

(b)

a fast change

(c)

an irreversible change

(d)

an undesirable change

Air pollution leading to Acid rain is a

(a)

reversible change

(b)

fast change

(c)

natural change

(d)

human made change

Gas exchange takes place in plants using __________

(a)

Stomata

(b)

Chlorophyll

(c)

Leaves

(d)

Flowers

The constituent of air that supports combustion is _________________

(a)

Nitrogen

(b)

carbon-di-oxide

(c)

Oxygen

(d)

water vapour

Under the microscope Priya observes a cell that has a cell wall and distinct nucleus. The cell that she observed is

(a)

a plant cell

(b)

an animal cell

(c)

a nerve cell

(d)

a bacteria cell

Which one of the following is not an unicellular organism?

(a)

Yeast

(b)

Amoeba

(c)

Spirogyra

(d)

Bacteria

Most organelles in an eukaryotic cell is found in the

(a)

Cell wall

(b)

cytoplasm

(c)

nucleus

(d)

Vacuole

Circulatory system transports these throughout the body

(a)

Oxygen

(b)

Nutrient

(c)

Hormones

(d)

All of these

Which one of the following is an output device?

(a)

Mouse

(b)

Keyboard

(c)

Speaker

(d)

Pendrive

Which one of the following is an input device?

(a)

Speaker

(b)

Keyboard

(c)

Monitor

(d)

Printer

1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.

Why do we separate mixtures?

Define - Sedimentation

Classify the plants on the basis of their habitat.

Relate the terms leaves and photosynthesis.

Which structure helps the bird to change its direction while flying in air?

Write two examples for each of the following.
a) Food items rich in fat.
b) Vitamin deficiency diseases.

Mention any two viral diseases.

What is a Computer?

Write a short note on Data.

What is temperature?

Identify the conductor from the following figures.

Circle the odd one out. Give reason for your choice.
Switch, Bulb, Battery, Generator.

What kind of a change is associated with decaying of a plants?

Define a slow change.

What is a solution?

What will happen if we remove plants from the aquarium?

How do the roots of land plants get oxygen for breathing?

Who discovered the cell in 1665?

What are the organelles found only in plant cell?

Which one is called as “Area of movement"?

Write the functions of epiglottis.

What are the three types of blood vessels?

A vehicle covers a distance of 400km in 5 hour. Calculate its speed.

What is meant by food adulteration?

Distinguish between terrestrial and aquatic habitats.

Write the adaptive features of Polar bear and Penguin.

Distinguish between heat and temperature.

Can the cell used in the clock gives us an electric shock? Justify your answer.

Can deforestation be considered a desirable change? Explain.

Biscuits kept open on a plate during monsoon days lose its’ crispness. Why?

Identify any four parts of the Plant cell.

List out the functions of the human skeleton.

How will you measure the volume of irregular objects?

What is motion? Classify different types of motion with examples.

Fill with examples:

Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water and coins. Draw a flow chart to show the separation process

Complete the map by filling the blanks

Tabulate the vitamins and their corresponding deficiency diseases.

Explain in detail above the applications of computer.

Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?

Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses a lemon instead of a battery and makes a circuit. Will the bulb glow?

When a candle is lit the following changes are observed.
a. Wax melts.
b. Candle keeps burning.
c. The size of the candle decreases.
d. The molten wax solidifies
e. Which of the changes can be reversed? Justify your answer.

Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off fire?

Tabulate any five cell organelles and their function.

Why do we sweat more in summer?