Jamb Chemistry 2022 Past Questions and Answers

Question 26:

• JAMB 2022

Addition of sodium chloride to water to form a solution would lead to?

A. Increase in freezing point and increase the boiling point
B. Increase in freezing point and decrease the boiling point
C. Decrease in freezing point and decrease the boiling point
D. Decrease in freezing point and increase the boiling point

Question 27:

• JAMB 2022

A chemical widely used as a fertilizer is?

A. Galena
B. Bauxite
C. Emerald
D. Nitrochalk

Question 28:

• JAMB 2022

On the basis of the electrochemical series, which of these ions will show the greater tendency to be discharged at the cathode in an electrolytic cell

A. Cu\(^{2+}\)
B. Sn\(^{2+}\)
C. Fe\(^{2+}\)
D. Zn\(^{2+}\)

Question 29:

• JAMB 2022

Addition of charcoal to the filter bed of sand during water treatment for township supply is to?

A. Prevent goiter
B. Prevent tooth decay
C. Remove odour
D. Kill germs

Question 30:

• JAMB 2022

Using the metal activity series, the metal that can liberate hydrogen gas from steam is?

A. Iron
B. Copper
C. Tin
D. Lead