1 Diamond is an allotrope of carbon and is known for its: A Softness and electrical conductivity B Extreme hardness and electrical insulation C Low melting point D High compressibility
2 Which of the following is a characteristic property of liquids? A Fixed shape B High compressibility C Definite volume D Rapid diffusion
5 The process of conversion of a gas into a liquid is called: A Evaporation B Sublimation C Condensation D Melting
6 London dispersion forces are also known as: A Induced dipole-induced dipole forces B Dipole-dipole forces C Ion-dipole forces D Hydrogen bonds
7 Which type of intermolecular force is present between a polar molecule and a nonpolar molecule? A Dipole-dipole forces B Dipole-induced dipole forces C London dispersion forces D Hydrogen bonding
9 Which of the following properties is typical of liquids? A Definite shape and definite volume B Indefinite shape but definite volume C Indefinite shape and indefinite volume D Definite shape but indefinite volume
10 Which of the following is NOT a characteristic property of gases? A High compressibility B Definite shape C Low density D Diffusion
11 The process of a liquid changing into a gas at its boiling point is called: A Evaporation B Condensation C Boiling D Sublimation
13 The boiling point of a liquid is the temperature at which its vapor pressure becomes equal to: A Zero B Atmospheric pressure C Critical pressure D Osmotic pressure
15 Which type of intermolecular force is present in all molecules, even nonpolar ones? A Dipole-dipole B Ion-dipole C London dispersion D Hydrogen bonding
16 Which allotrope of carbon consists of spherical molecules made of 60 carbon atoms? A Diamond B Graphite C Buckminsterfullerene D Graphene
17 The temperature at which a liquid converts into a solid is called its: A Boiling point B Melting point C Freezing point D Sublimation point
18 Which of the following statements about liquids is FALSE? A Liquids have a definite volume. B Liquids are highly compressible. C Liquids can evaporate. D Liquids have a definite boiling point at a given pressure.
19 The force of attraction between an ion and a polar molecule is called: A Ion-dipole force B Dipole-dipole force C London dispersion force D Hydrogen bond
20 The spreading of particles of one substance through another due to random motion is called: A Effusion B Diffusion C Sublimation D Deposition
21 The temperature at which a solid changes into a liquid is called its: A Boiling point B Melting point C Freezing point D Condensation point
23 The weakest intermolecular force among the following is: A Hydrogen bonding B Dipole-dipole force C London dispersion force D Ion-dipole force
24 Which property of gases explains why they can be compressed easily? A High density B Large intermolecular spaces C Strong intermolecular forces D Fixed volume
25 The intermolecular force present between a polar molecule and a nonpolar molecule is called: A Dipole-dipole force B Dipole-induced dipole force C Ion-dipole force D London dispersion force