Jamb 2023 Chemistry Past Questions with Answers

Jamb 2023 Chemistry Past Questions

Question 11:

JAMB 2023

What is the atomic number of aluminium?

A. 13
B. 26
C. 14
D. 12

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Question 12:

JAMB 2023

Which of the following metals is commonly alloyed with copper to make brass?

A. Iron
B. Nickel
C. Aluminum
D. Zinc

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Question 13:

JAMB 2023

What happens when alkanoic acids react with alcohols in the presence of an acid catalyst?

A. Saponification
B. Esterification
C. Polymerization
D. Hydrolysis

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Question 14:

JAMB 2023

Which functional group is present in alkanals?

A. Carbonyl group (C=O)
B. Hydroxyl group (-OH)
C. Alkyl group (-R)
D. Carboxyl group (-COOH)

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Question 15:

JAMB 2023

At 2.0 atm pressure, the volume of a gas is 4.0 L. If the pressure is reduced to 1.0 atm while keeping the temperature constant, what will be the new volume of the gas?

A. 2.0 L
B. 6.0 L
C. 8.0 L
D. 4.0 L

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Jamb Chemistry 2023 Past Questions and Answers

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