Jamb Chemistry 1983 Past Questions and Answers

Question 41:

• JAMB 1983

Which of the following is a neutralization reaction?

A. Addition of sodium chloride solution to potassium chloride solution
B. Addition of trioxonitrate (V) acid (nitric acid) to distilled water
C. Addition of trioxonitrate (V) acid (nitric acid) to tetraoxosulphate (IV) acid (sulphuric acid)
D. Addition of trioxonitrate (V) acid (nitric acid) to potassium trioxonitrate (V) (potassium nitrate) solution
E. Addition of trioxonitrate (V) acid (nitric acid) to potassium hydroxide solution

Question 42:

• JAMB 1983

A jet plane carrying 3,000 kg of ethane burns off all the gas forming water and carbondioxide. if all the carbondioxide is expelled and all the water formed is condensed and kept on board the plane, then the gain in weight is

A. 1,800 kg
B. 900 kg
C. 600 kg
D. 2, 400 kg
E. 1, 200 kg

Question 43:

• JAMB 1983

Liquid X, reacts with sodium trioxocarbonate (IV) (Na₂CO₃) to give a gas which turns calcium chloride solution milky X is

A. Na₂SO₄(aq)
B. Kl (aq)
C. An alkali
D. An acid
E. A hydrocarbon

Question 44:

• JAMB 1983

Which of the following statements is FALSE?

A. Copper (ll) ion can be reduced to copper (l) ion by hydrochloric acid and zinc
B. Sodium metal dissolves in water giving oxygen
C. Nitrogen is insoluble in water
D. Carbondioxide is soluble in water
E. Lead has a higher atomic weight than copper

Question 45:

• JAMB 1983

When sodium dioxonitrate (lll) (NaNO₂) dissolves in water, ∆H is positive. The process of dissolution is

A. Exothermic
B. Endothermic
C. Isothermal
D. Isomeric
E. Hygroscopic