From the given v-t graph it can be inferred that the object is _______.

Which of the following is a short and scientific way of representing one molecule of an element or compound?

Pollinators are _________.

Sleep is not only good for our body, but it is also good for ________ .

Which software is used to create symbols?

Density of mercury is ________.

The rate of change of velocity is_______.

________is the only non-metal conducts electricity.

__________is the basal swollen part of the Gynoecium.

The hair follicles produce _____ which keeps the hair smooth.

A ball of iron floats in mercury.

Non-metals are usually, good conductors of heat and electricity.

Most of the space in an atom is occupied by electrons

Mass number determines the number of atoms of an element that combines with atom or atoms of another type.

Leaves of Aloe vera are fleshy and store water.

Assertion (A): The distance between two celestial bodies is measured by the unit of light year
Reason (B): The distance travelled by the light in one year in vacuum is called one light year
(a) Both A and R are true but R is not the correct reason.
(b) Both A and R are true and R is the correct reason.
(c) A is true but R is false.
(d) A is false but R is true.

Assertion (A): Volume is a derived quantity.
Reason (B): The amount of space occupied by a three dimensional object is known as its volume
(a) Both A and R are true but R is not the correct reason.
(b) Both A and R are true and R is the correct reason.
(c) A is true but R is false.
(d) A is false but R is true

Assertion (A) : We must offer first aid to a bleeding person.
Reason (R) : We must not use gloves while helping them.
(a) Both A and R are true
(b) Both A and R are false
(c) A is true but R is false
(d) A is false but R is true

Complete the following table by writing compound of its constituent:

Give the formula to find the density of objects.

Find the area of the following regular shaped figures: (Take \(\pi\) = 22/7)
(a) A rectangle whose length is 12 m and breadth is 4 m.
(b) A circle whose radius is 7 m.
(c) A triangle whose base is 6 m and height is 8 m.

Write the chemical formula and name the elements present in the following compounds:
a. Sodium chloride
b. Potassium hydroxide
c. Carbon dioxide
d. Calcium oxide
e. Sulphur dioxide

What is atomic number?

Define – pollination.

What is hygiene?

A solid cylinder of mass 280 kg has a volume of 4 m³. Find the density of cylinder.

Differentiate mass number from atomic number.

Name the mode of transmission of communicable disease.

Draw the structure of an atom and explain the position of the sub-atomic particles.

Write about any three Communicable diseases in details.