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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 26:

An example of an alcohol is

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A CCl₄
B CH₃COOH
C CHCl₃
D C₂H₆
E CH₃OH

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Question 27:

The nucleus of an atom contains

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A Protons only
B Neurons only
C Protons and electrons
D Neutrons and electrons
E Protons and neutrons

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Question 28:

Hypochlorous acid is used as a bleach because

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A It is a strong acid
B It yields chlorine readily in pure water
C It is an oxidising agent
D It is a weak acid
E It is a reducing agent

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Question 29:

The normal boiling point of a liquid is defined as

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A The temperature at which its vapour pressure equals the atmospheric pressure
B The temperature at which bubbles begin to form
C The temperature at which the vapour pressure equals 1 temperature
D The temperature at which the rate of condensation of vapour equals the rate of vaporisation of the liquid
E The temperature at which the space above the liquid is saturated

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Question 30:

Which of the following compounds will form a solution if exposed to air?

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A Na₂CO₃.10H₂O
B NaNO₃
C CuSO₄
D CaCl₂
E Na₂SO₄.10H₂O

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