Chemistry 1997 Waec Past Questions and Answers

Question 36 :

• WAEC 1997

The following oxides react with both acids and bases to form salts except

A. Zinc oxide
B. Lead (ll) oxide
C. Aluminium oxide
D. Tin (IV) oxide
E. Carbon (Iv) oxide

Question 37 :

• WAEC 1997

Which of the following metals is not extracted by electrolysis ?

A. Lron
B. Sodium
C. Calcium
D. Magnesium
E. Aluminium

Question 38 :

• WAEC 1997

Which of the following is an ore of aluminium?

A. Haematite
B. Magnetite
C. Siderite
D. Bauxite
E. Cassiterite

Question 39 :

• WAEC 1997

Lead and tin are the components of

A. Steel
B. Bronze
C. Brass
D. Dentist amalgam
E. Soft solder

Question 40 :

• WAEC 1997

An atom 17 protons, 17 electrons and 18 neutrons has a mass number of

A. 17
B. 18
C. 34
D. 35
E. 52