Jamb Chemistry 1992 Past Questions and Answers

Question 6:

• JAMB 1992

Which of the following is a measure of the average kinetic energy of the molecules of a substance?

A. Volume
B. Mass
C. Pressure from age grades
D. Temperature

Question 7:

• JAMB 1992

If 100 cm³ of oxygen pass through a porous plug in 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is?
(O = 16, H = 1)

A. 10.0 s
B. 12.5 s
C. 17.7 s
D. 32.0 s

Question 8:

• JAMB 1992

An increase in temperature causes an increase in pressure of a gas in a fixed volume due to an increase in the?

A. Number of molecules of the gas
B. Density of the gas molecules
C. Number of collisions between the gas molecules
D. Number of collisions between the gas molecules and the walls of the container

Question 9:

• JAMB 1992

The nucleus of the isotope tritium, contains?

A. Two neutrons with no protons
B. One neutron and one protons
C. Two neutrons and one proton
D. Two neutrons, one proton and one electron

Question 10:

• JAMB 1992

How many lone pairs of electron are there on the central atom of the H₂O molecules?

A. 1
B. 2
C. 3
D. 4