Question 1. For one mole of a gas, the ideal gas equation is
- (a) PV = 1/2RT
- (b) PV = RT
- (c) PV = 3/2RT
- (d) PV = 5/2 RT
Answer: 1. (b) PV = RT
Question 2. The average kinetic energy of the gas molecule is
- (a) inversely proportional to its absolute temperature
- (b) directly proportional to its absolute temperature
- (c) equal to the square of its absolute temperature
- (d) All of the above
Answer: 2. (b) directly proportional to its absolute temperature
Question 3. Which of the following is the correct mathematical relation for Charles law at constant pressure?
- (a) VαT
- (b) Vαt.
- (c) Vα1/T
- (d) all of above
Answer: 3. (a) VαT
Question 4. At constant temperature, the pressure of the gas is reduced to one-third, the volume
- (a) reduce to one-third
- (b) increases by three times
- (c) remaining the same
- (d) cannot be predicted
Answer: 4. (b) increases by three times
Question 5. With rise in temperature, the surface tension of a liquid
- (a) decreases
- (b) increases
- (c) remaining the same
- (d) none of the above
Answer: 5. (a) decreases
Question 6. Viscosity of a liquid is a measure of
- (a) repulsive forces between the liquid molecules
- (b) frictional resistance
- (c) intermolecular forces between the molecules
- (d)none of the above
Answer: 6. (b) frictional resistance
Question 7. The cleansing action of soaps and detergents is due to
- (a) internal friction
- (b) high hydrogen bonding
- (c) viscosity
- (d) surface tensions
Answer: 7. (d) surface tensions
Question 8. The compressibility factor, z for an ideal gas is
- (a) zero
- (b) less than one
- (c) greater than one
- (d) equal to one
Answer: 8. (d) equal to one
Question 9. Which of the following gases will have the lowest rate of diffusion?
- (a) H2
- (b) N2
- (C) F2
- (d) O2
Answer: 9. (c) F2