Waec Chemistry 1996 Past Questions and Answers

Question 36:

• WAEC 1996

The following are properties of transition metals except

A. Variable oxidation states
B. Tendency to form complext ions
C. Formation of coloured ions
D. Ability to act as catalyst
E. Low melting points

Question 37:

• WAEC 1996

The following salts will produce a gas on reacting with hydrochloric acid except

A. CuSO₄
B. CaCO₃
C. FeS
D. Na₂SO₃
E. K₂CO₃

Question 38:

• WAEC 1996

(a) List two gases which are monatomic
(b) Mention one gas which forms:
(i) dense white fumes with ammonia vapour
(ii) yellow precipitate with ammoniacal silver trioxonitrate (V) solution.

Question 39:

• WAEC 1996

(a) State three postulates of the kinetic theory
(b) Name the process involved in the;
(i) spread of the smell of a perfume across a room
(ii) decrease in the yellow of a liquid after exposure in an open vessel.

Question 40:

• WAEC 1996

(a) What is the anhydride of each of the following acids?:
(i) H\(_2\)SO\(_4\)
(ii) HNO\(_3\)

(b) Classify each of the: following as normal salt/acid salt/basic salt/double salt
(i) Sodium hydrogentrioxocarbonate (IV)
(ii) Iron (III) chloride
(iii) Sodium ethanoate.