Jamb Chemistry 2023 Past Questions and Answers

Question 51:

• JAMB 2023

A gas occupies a volume of 1.5 liters at a pressure of 2 atmospheres. If the pressure is increased to 4 atmospheres while the temperature remains constant, what will be the new volume of the gas?

A. 6 liters
B. 1.5 liters
C. 0.75 liters
D. 3 liters

Question 52:

• JAMB 2023

Stainless steel is an alloy made up of

A. Iron and zinc
B. Copper and tin
C. Iron and chromium
D. Iron and carbon

Question 53:

• JAMB 2023

What is the state of matter in which particles are widely spaced and move freely with high kinetic energy?

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

Question 54:

• JAMB 2023

Identify the reducing agent in the following reaction:
Zn + CuSO\(_4\) → ZnSO\(_4\) + Cu

A. Cu
B. Zn
C. ZnSO\(_4\)
D. CuSO\(_4\)

Question 55:

• JAMB 2023

Balance the following redox reaction:
Fe\(_2\)O\(_3\) + CO → Fe + CO\(_2\)

A. Fe\(_2\)O\(_3\) + CO → 2Fe + 2CO\(_2\)
B. 2Fe\(_2\)O\(_3\) + 3CO → 4Fe + 3CO\(_2\)
C. Fe\(_2\)O\(_3\) + 2CO → 2Fe + 2CO\(_2\)
D. Fe\(_2\)O\(_3\) + 3CO → 2Fe + 3CO\(_2\)