Liquids and Solids Set 4

Results

#1. Ionic solids are characterized by

low melting points

good conductivity in solid state

high vapour pressure

solubility in polar solvents

#2. Amorphous solids.

have sharp melting points

undergo clean cleavage when cut with knife

have perfect arrangements of atoms

can presses small regions of orderly arrangements of atoms

#3. The force of attraction between the atoms of helium is

hydrogen bonding

coordinate covalent bond

covalent bond

london dispersion force

#4. Which of the following is a pseudo-solid

CaF2

Glass

NaCl

All

#5. Diamond is a bad conductor because

It has a tight structure

It has a high density

There is no free electron present in the crystal of diamond to conduct electricity

None of the above

#6. The weakest intermolecular for a

dipole–dipole force

electrostatic force between ions

ion–dipole force

dipole–induced dipole force

#7. In liquids intermolecular forces are

very weak

very strong

reasonably strong

ion–dipole force

#8. Values of heat of vaporization for liquids, with strong dipole–dipole forces will be

very high

very low

reasonably high

negligible

#9. Instantaneous dipole–induced dipole force is also called

dipole force

london dispersion

hydrogen bonding

none of the above

#10. Down the group polarizability generally

increases

decreases

remains constant

do not follow a regular trend

Finish