Waec Chemistry 1994 Past Questions and Answers

Question 31:

• WAEC 1994

Which of the following is not a halogen?

A. Silicon
B. Fluorine
C. Astatine
D. Bromine
E. Lodine

Question 32:

• WAEC 1994

Which of the following is likely to have the highest degree of hardness?

A. Carbonated water
B. Distilled water
C. Acidified water
D. Rain water
E. Lime water

Question 33:

• WAEC 1994

Study the reaction represented by the equation: Alkanol + Alkanoic acid conc. H₂SO₄ Alkanoate + water. The type of process involved in the reverse reaction is

A. Neutralization
B. Dehydration
C. Hydrolysis
D. Decomposition
E. Hydrogenation

Question 34:

• WAEC 1994

Destructive distillation of coal means

A. Heating coal in plentiful supply of air
B. Burning coal in air to produce water and carbon (IV) oxide
C. Heating coal in the absence of air
D. Heating coal in limited supply of air
E. Separating coal into various allotropes of carbon

Question 35:

• WAEC 1994

When magnesium ribbon burns in air, the products are

A. Magnesium nitride and magnesium oxide
B. Magnesium nitride and carbon (ll) oxide
C. Magnesium oxide and steam
D. Magnesium nitride and soot
E. Magnesium oxide and carbon (ll) oxide