Jamb Chemistry 1981 Past Questions and Answers

Question 1:

• JAMB 1981

An element X has 127 neutrons and 82 electrons.
Its atomic number is?

A. 209
B. 105
C. 45
D. 82

Question 2:

• JAMB 1981

An element X has 127 neutrons and 82 electrons.
Its atomic number is?

A. 209
B. 105
C. 45
D. 82

Question 3:

• JAMB 1981

When a bottle of Coca-Cola is opened, bubbles of evolve. The gas is?

A. Hydrogen
B. Carbon monoxide
C. Carbon dioxide
D. Sulphur oxide
E. Chlorine

Question 4:

• JAMB 1981

When glowing splint is inserted into the mouth of a jar containing a gas, the splint is extinguished. The gas gives a white precipitate when passing into barium hydroxide. The gas is?

A. Methane
B. Hydrogen chloride
C. Hydrogen
D. Nitrogen
E. Carbondioxide

Question 5:

• JAMB 1981

An example of a strong electrolyte is?

A. Ethyl acetate
B. Ethanol
C. Glucose
D. Sodium formate
E. Formic acid