The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________?

A. Molar heat of sublimation
B. Molar heat of fusion
C. Molar heat of vapourization
D. Latent heat of that liquid

All of the following were theorized by Bohr in his description of the atom except__________________?

A. Angular momentum of electrons in multiples of h/2?
B. Electrons revolve in discrete circular orbits
C. Energy of each electron is directly proportional to n2
D. Electrons radiate energy continuously in a given orbit.

Rising of a wetting liquid in a capillary tube is due to__________________?

A. Surface tension
B. Cohesive forces
C. Adhesive forces
D. Viscosity

The number of formula units in 29.25g of common salt_________________?

A. 6.022 x 1023
B. 3.01 x 1023
C. 2 x na
D. 4 x 6.022 x 1023

Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?

A. Liquid do not have definite shape
B. Liquid do not have definite volume
C. Lieuid is highly compressible
D. Liquid molecules can slide over each other

Molar heat of vaporization of water is_________________?

A. 40.7 kj/mole
B. 40.7 j/mole
C. 40.7 cal/mole
D. 40.7 kcal/mole

Crystallites are present in_________________?

A. Crystalline solids
B. Amorphous solids
C. Liquid crystals
D. All of the above

A malleable solid is one which can be_________________?

A. Converted into wires
B. Converted into thin sheets
C. Melted easily
D. All of the above

Crystalline solids can be identified easily from their ___________________?

A. Sharp melting point
B. Definite geometry
C. Transition temperature
D. Colour

Which one is false for evaporation ?

A. Surface phenomenon
B. Continuous
C. Exothermic
D. Cause cooling