Physics Practice Test – Pressure (Solid, Liquid and Gas) Questions with Answers and Explanations

I. Increase the melting point of the liquid
II. Increase the boiling point of the liquid
III. Decrease the boiling point of the liquid
IV. Decrease the boiling point of the liquid.

Which of the statement above about the effects of increase in pressure in a liquid are correct? (JAMB 2007)

A. II and III only
B. I and II only
C. III and IV
D. I and III only

A liquid of mass 1.0 x 10³ kg fills a rectangular tank of length 2.5 m and width 20 m. If the tank is 4 m high. What is the pressure at the middle of the tank? [g = 10ms^-2] (JAMB 1997)

A. 1.0 x 10⁴ Nm^-2
B. 2.0 x 10³ Nm^-2
C. 1.5 x 10³ Nm^-2
D. 1.0 x 10³ Nm^-2

If the atmospheric pressure = 76 cmHg, the pressure of the gas in the diagram below is _______ (JAMB 2006)



A. 86 cmHg   B. 66 cmHg   C. 96 cmHg   D. 76 cmHg

The height at which the atmosphere ceases to exist is about 80 km, If the atmosphere pressure on the ground level is 760 mmHg, the pressure at a height of 20 km above the ground level is ______ (JAMB 2001)

A. 380 mmHg   B. 190 mmHg  C. 570 mmHg    D. 480 mmHg

The hydrostatic blood pressure difference between the head and feet of a boy standing straight is 1.65 x 10⁴ Nm^-2. Find the height of the boy. [Density of blood = 1.1 x 10³ kgm^-3, g = 10 ms^-2] (JAMB 2002)

A. 0.5 m   B. 0.6 m    C. 1.5 m    D. 2.0 m