Waec Chemistry 1995 Past Questions and Answers

Question 16:

• WAEC 1995

H₃O⁺_(aq) + OH-_(aq) → 2H₂O_(l). The heat change accompanying the process represented by the equation above is the heat of

A. Neutralization
B. Formation
C. Solution
D. Dilution
E. Hydration

Question 17:

• WAEC 1995

The following statements about graphite are correct except that it

A. Is used as a lubricant
B. Has a network structure
C. Contains mobile free electrons
D. Is good conductor
E. Is an allotrope of carbon

Question 18:

• WAEC 1995

Which of the following is hydrocarbons is unsaturated?

A. Ethane
B. Benzene
C. Propane
D. 2 - methylbutane
E. 2,2,4-trimethylpentane

Question 19:

• WAEC 1995

The following can be obtained directly from the destructive distillation of coal except

A. Ammoniacal liquor
B. Coke
C. Producer gas
D. Coal gas
E. Coal tar

Question 20:

• WAEC 1995

Fructose and glucose are classified as carbohydrates because they

A. Are crystalline white solids
B. Are energy -giving substances
C. Are naturally occurring organic compounds
D. Contain carbon oxygen and hydrogen
E. Conform to the general formula C_x(H₂O)_y