Chemistry Past Questions and Answers

Question 26 :

• JAMB 2019

An example of an alcohol is

A. A.CCl₄
B. B.CH₃COOH
C. C.CHCl₃
D. D.C₂H₆
E. E.CH₃OH

Question 27 :

• JAMB 2019

The nucleus of an atom contains

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

Question 28 :

• JAMB 2019

Hypochlorous acid is used as a bleach because

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

Question 29 :

• JAMB 2019

The normal boiling point of a liquid is defined as

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

Question 30 :

• JAMB 2019

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

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