Acids, bases and salts - Jamb Chemistry Past Questions and Answers

Question 71:

• JAMB 1992

Which of the following gases dissolves in water vapour to produce acid rain during rainfall?

A. Oxygen
B. Carbon (II) oxide
C. Nitrogen
D. Sulphur (IV) oxide

Question 72:

• JAMB 1992

A sample of orange juice is found to have a pH of 3.80. What is he concentration of the hydroxide ion in the juice?

A. 1.6 x 10^-4
B. 6.3 x 10^-11
C. 6.3 x 10^-4
D. 1.6 x 10^-11

Question 73:

• JAMB 1992

Copper (II) tetraoxosulphate (VI) solution is electrolyzed using carbon electrodes. Which of the following are produced at the anode and cathode respectively ?

A. Copper and oxygen
B. Oxygen and copper
C. Hydrogen and copper
D. Copper and hydrogen

Question 74:

• JAMB 1992

In the experiment above. Z can be

A. A solution of sodium dioxonitrate (lll) and ammonium chloride
B. A solution of lead trioxnitrate (V)
C. A solution of sodium trioxonitrate (V) and ammonium chloride
D. Concentrated tetraoxosulphate (VI) acid and sodium trioxonitrate (V)

Question 75:

• JAMB 1993

A student prepares 0.5 M solution each of hydrochloric and ethanoic acids and then measured pH. The result would show that the?

A. PH values are equal
B. HCI solution has a higher pH
C. Sum of the values is 14
D. Ethanoic acid solution has a higher pH