Non-metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 11:

• JAMB 1978

Three solutions contain carbonate, sulphate and sulphide ions respectively. One test that will identify just ONE of them completely is by addition to each of them of

A. Barium chloride solution
B. Dilute hydrochloric acide
C. Lead nitrate solution
D. Calcium chloride solution
E. Sodium hydroxide solution

Question 12:

• JAMB 1979

Which of the following statements applies during the electroysis of sodium hydroxide sodium hydroxide solution using platinum electrodes?

A. Na⁺ ions are discharged at the cathode
B. Hydrogen ions are discharged at the anode
C. The concentration of sodium hydroxide decrease at both electrode compartments
D. The concentration of sodium hydroxide increases at the cathode only
E. The concentration of sodium hydroxide increases at the anode only

Question 13:

• JAMB 1981

Which of the following compounds and elements would sublime on exposure to the atmosphere?

A. Ice
B. Sulphur
C. Phosphurous
D. Iodine
E. Potassium iodie

Question 14:

• JAMB 1994

An anhydride is an oxide of non-mental?

A. Which will not dissolve in water
B. Whose solution in water has a pH greater than 7
C. Whose solution in water has a pH less than 7
D. Whose solution in water has a pH of 7

Question 15:

• JAMB 2001

Which of the following metals burn with brick red flame?

A. Pb
B. Ca
C. Na
D. Mg