Post Utme Economics Past Questions and Answers

Question 956:

A force of \(300 \mathrm{~N}\) was used to pull a load of mass \(40 \mathrm{~g}\) at a steady speed up an inclined length \(6.2 \mathrm{~m}\) and vertical height \(3.5 \mathrm{~m}\). Determine the velocity ratio

A. 0.57
B. 1.31
C. \(1.57\)
D. \(1.77\)

Question 957:

Which of the following is NOT TRUE about pressure?

A. Unit of pressure is \(\mathrm{Nm}^{-1}\)
B. Pressure in a liquid increases with depth
C. Pressure at any point in a liquid acts in all directions
D. Pressure is the ratio of force acting normally per unit area

Question 958:

\(120 \mathrm{~cm}^3\) of gas was collected at \(20^{\circ} \mathrm{C}\) and \(745 \mathrm{~mm}\) of mercury pressure. Find the volume of gas at standard temperature and pressure ____________

A. \(1605.7 \mathrm{~cm}^3\)
B. \(917.8 \mathrm{~cm}^3\)
C. \(305.1 \mathrm{~cm}^3 \)
D. \(109.6 \mathrm{~cm}^3\)

Question 959:

A metal of length \(30 \mathrm{~cm}\) is heated until its temperature rises by \(60^{\circ} \mathrm{C}\) to a new length of \(30.04 \mathrm{~cm}\). Calculate its linear expansively

A. \(4.44 \times 10^{-5} \mathrm{~K}^{-4}\)
B. \(2.22 \times 10^{-5} \mathrm{~K}^{-1}\)
C. \(3.33 \times 10^{-5} \mathrm{~K}^{-4}\)
D. \(1.53 \times 10^{-5} \mathrm{~K}^{-4}\)

Question 960:

Which of the following statements is NOT correct?

A. Molecules of a liquid are stationary
B. Atoms combine to form molecules
C. The molecules of matter are in constant motion
D. Brownian motion is an evidence of particle nature of matter