Jamb Chemistry 1988 Past Questions and Answers

Question 21:

• JAMB 1988

Given the reactions (i) Fe_(s) + X(NO₃)_2(aq) → Fe(NO₃) + X_(s) (ii) H_2(g) + XO → X + H₂O_(s); X is likely to be?
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A. Copper
B. Zinc
C. Calcium
D. Lead

Question 22:

• JAMB 1988

Crude copper can be purified by the electrolysis of CuSO_4(aq) if?

A. Platinum electrodes are used
B. The crude copper is made the anode of the cell
C. The crude copper is made the cathode of the cell
D. Crude copper electrodes are used

Question 23:

• JAMB 1988

Methylethanoate reacts with ammonia to yield?

A. Mettylamine and ethanol
B. Ethylamine and methanol
C. Methanamide and ethanol
D. Ethanamide and methanol

Question 24:

• JAMB 1988

Alkanoates are formed by the reaction of alkanoic acid with?

A. Alkyl halides
B. Alkanols
C. Ethers
D. Sodium

Question 25:

• JAMB 1988

The four classes of hydrocarbons are?

A. Ethane, ethene, ethyne and benzene
B. Alkanes, alkenes, alkynes and aromatics
C. Alkanes, alkenes, alkynes and benzene
D. Methane, ethane , propane and butane