Gas Laws - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 1978

A gas at pressure PNm\(^{-2}\) and temperature 27°C is heated to 77°C at constant volume. The new pressure is

A. 0.85 PN-m^-2
B. 0.86 PN-m^-2
C. 1.16 PN-m^-2
D. 1.18 PN-m^-2
E. 2.85 PN-m^-2

Question 2:

• JAMB 1979

If a given mass at constant pressure obeys the relation...volume is proportional to the absolute temperature...the gas is said to obey

A. Hooke's Law
B. Boyle's Law
C. Dalton's Law
D. Charles' Law
E. Newton's Law

Question 3:

• JAMB 1980

A quantity of sungas at -133^{[/sup] occupies 1/3m[sup]3} under pressure 1.4 x 10⁵ Nm^-2. if the gas occupies 31 m^-2 at 37^oC, its pressure will be

A. 1.26 x 10³Nm^-2
B. 3.3 x10⁴Nm^-2
C. 1.35 x 10⁴Nm^-2
D. 2.2 x 10⁴Nm^-2
E. 10⁵Nm^-2

Question 4:

• JAMB 1980

If the volume of a fixed mass of a gas is kept constant, the pressure of the gas

A. Is inversely proprotional to its centigrade temperature
B. Is inversely proportional to its absolute temperature
C. Is directly proportional to its centigrade temperature
D. Is directly proportional to its absolute temperature
E. Remains constant also

Question 5:

• JAMB 1981

When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases?

A. Average number per unit volume
B. Average kinetic energy
C. Average speed
D. Average seperation
E. Average number of collisions per unit time