Question

3.The temperature at which a liquid changes into solid without further decrease in temperature is called its
(1 Point)

boiling point

condensation point

freezing point

vaporization point
4.Water gets cooled in earthen pots due to the process of
(1 Point)

condensation

deposition

fusion

evaporation
5.With respect to a molecule, the following is not correct
(1 Point)

a molecule of a substance has all its properties

a molecule may or may not exist independently in nature

molecules are very small in size

molecules are in constant motion
6.Anything that occupies space and has mass is called
(1 Point)

matter

fluids

molecules

mixtures
7.The property which does not decide the state of a substance is
(1 Point)

inter-molecular space

kinetic energy of molecules due to their motion

exposed surface area

force of attraction between molecules
8.A cloth dries up faster if it is spread out as
(1 Point)

the exposed surface area is increased

rate of evaporation is decreased

rate of evaporation remains constant

the exposed surface area is reduced
9.With respect to the properties of solids the following statement is correct
(1 Point)

the intermolecular space is the least and so the intermolecular force of attraction is the maximum

the intermolecular force is the minimum and hence the intermolecular space is the maximum

the intermolecular force is weaker than the intermolecular forces in gases

the molecules in a solid are non-rigid
10.With respect to the process of evaporation and boiling, the correct statement is
(1 Point)

there is no difference between boiling and evaporation

boiling occurs at a fixed temperature while evaporation may occur at different temperatures

evaporation occurs at a fixed temperature while boiling may occur at different temperatures

cooling effect is produced during boiling as well as evaporation

Answer 1

Answer:

boiling point

the exposed surface area is increased

Answer 2

Answer:

3.freezing point

4.evaporation

5.molecules are in constant motion

6.matter

7.kinetic energy of molecules due to their motion

8.exposed surface is increased

9.b option

10 c option