Waec Chemistry 1996 Past Questions and Answers

Question 11:

• WAEC 1996

The following acids are monobasic except

A. Trioxonitrate (V) acid
B. Hydrochloric
C. Ethanoic acid
D. Tetraoxophosphorus (V) acid
E. Dioxonitrate (lll) acid

Question 12:

• WAEC 1996

An arrangement of two different metals in aqueous solutions of their salts to produce an electronic current is known as

A. Electrochemical cell
B. Activity series
C. Thermocouple
D. Voltameter
E. Galvanometer

Question 13:

• WAEC 1996

In which of the following compounds is the oxidation number of nitrogen equal to + 3?

A. NO ₂
B. N ₂O
C. NO
D. HNO₂
E. HNO₃

Question 14:

• WAEC 1996

Which of the following statements is not correct about electrolysis?

A. Reduction occurs at the anode
B. Anions migrate to the anode
C. Positive ions migrate to the cathode
D. Concentration affects the discharge of ions
E. Electrolytes conduct electric current

Question 15:

• WAEC 1996

Which of the following is not correct about a catalyst? It

A. Remains unchanged chemically at the end of a reaction
B. Helps to establish equilibrium faster reversible reaction
C. Can start a chemical rection which will normally not take place
D. Is usually specific in its action
E. Alters the rate of chemical reaction