Pressure - Jamb Physics Past Questions and Answers

Question 31:

• JAMB 1990

Which of the following conditions will make water boil at a temperature of 100^oC when the atmospheric pressure is 750mmHg?

A. Increase the external pressure
B. Reduce the external pressure
C. Heat more rapidly at the same pressure
D. Reduce the external pressure by a quarter

Question 32:

• JAMB 1991

Which of the following is the most suitable for use as an altimeter?

A. A mecury barometer
B. A fortin barometer
C. A mecury manometer
D. An aneroid barometer

Question 33:

• JAMB 1991

Which of the following is the most suitable for use as an altimeter?

A. A mecury barometer
B. A fortin barometer
C. A mecury manometer
D. An aneroid barometer

Question 34:

• JAMB 1991

A pilot records the atmospheric pressure outside its plane as 63cm of Hg while a ground observer records a reading of 75cm of Hg for the atmospheric pressure on the ground. Assuming that the density of the atmosphere is constant, calculate the height of the plane above the ground. (Relative density of Hg = 13.0 and that of air = 0.00013)

A. 1200m
B. 6300m
C. 7500m
D. 13800m

Question 35:

• JAMB 1993

A weightless vessel of dimensions 4m x 3m x 2m is filled with a liquid of density 1000kgm^-3 and sealed. What is the maximum pressure this container can exert on a flat surface? [g = 10ms^-2]

A. 9 x 10⁴NM^-2
B. 4 x 10⁴NM^-2
C. 3 x 10⁴NM^-2
D. 2 x 10⁴NM^-2