Jamb Chemistry 2023 Past Questions and Answers

Question 36:

• JAMB 2023

What happens to the position of equilibrium, if a reversible exothermic reaction is subjected to a decrease in temperature?

A. The position of equilibrium shifts to the left
B. The position of equilibrium shifts to the right.
C. The position of equilibrium remains unchanged
D. The reaction stops

Question 37:

• JAMB 2023

Which noble gas is radioactive and is produced as a decay product of uranium and thorium?

A. Argon
B. Krypton
C. Radon
D. Neon

Question 38:

• JAMB 2023

Which of the following reactions would be expected to have the highest entropy change?

A. Liquid → Gas
B. Solid → Liquid
C. Gas → Liquid
D. Gas → Solid

Question 39:

• JAMB 2023

What is the sum of the oxidation numbers in a neutral compound?

A. +2
B. -1
C. +1

Question 40:

• JAMB 2023

According to the kinetic theory of gases, the pressure exerted by a gas is due to

A. The vibrations of gas particles.
B. The weight of the gas particles
C. The attractive forces between gas particles
D. The collisions of gas particles with the container walls