Post Utme Economics Past Questions and Answers

Question 1001:

Which of the following is NOT true about mercury as a thermometric liquid?

A. It does not wet glass
B. It is opaque and easily seen
C. It can be used for extra low temperature down to \(200^{\circ} \mathrm{C}\)
D. It is a good conductor of heat and responds rapidly to changes in temperature

Question 1002:

A stone whirled at the end of rope \(35 \mathrm{~cm}\) long, makes 15 complete revolutions in \(4 \mathrm{~seconds}\).
Find the angular velocity in radius per second.

A. 23.6rad.s \(\mathrm{s}^{-1}\)
B. \(31.4 \mathrm{rad} . \mathrm{s}^{-1} \)
C. \(824.7 \mathrm{rad} . \mathrm{s}^{-1} \)
D. 942.0rad.s \({ }^{-1}\)

Question 1003:

An object of mass \(7 \mathrm{~kg}\) is moving at a constant velocity of \(20 \mathrm{~ms}\). Determine the kinetic energy.

A. \(22.2 \mathrm{KJ}\)
B. \(140.0 \mathrm{KJ}\)
C. \(1.4 \mathrm{KJ}\)
D. \(562.5 \mathrm{KJ}\)

Question 1004:

Find the cost of operating an electric appliance for 10 hours at 30 kobo per kwh, if it takes \(3 \mathrm{~A}\) when connected to a \(220 \mathrm{~V}\) supply.

A. N66
B. \(\# 1.32\)
C. #1.98
D. N2.62