Chemistry and Industry - Jamb Chemistry Past Questions and Answers

Question 131:

• JAMB 2010

The compound that is used as an anaesthetic is

A. CCl₄
B. CH Cl₃
C. CH₂Cl₂
D. CH₃Cl

Question 132:

• JAMB 2010

In the diagram above, the purpose of the asbestos to

A. Absorb impurities
B. Catalyze the reaction
C. Solidify the gas
D. Dry the gas

Question 133:

• JAMB 2011

The impurities formed during the laboratory preparation of chlorine gas are removed by

A. H₂O
B. NH₃
C. H₂SO₄
D. HCl

Question 134:

• JAMB 2011

The effect of the presence of impurities such as carbon and sulphur on iron is that they

A. Give it high tensile strenght
B. Make it malleable and ductile
C. Increase its melting point
D. Lower its melting point

Question 135:

• JAMB 2011

In the laboratory preparation of oxygen, dried oxygen is usually collected over

A. Hydrochloric acid
B. Mercury
C. Calcium chloride
D. Tetraoxosulphate (VI) acid