Metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 81:

• JAMB 2005

When pure aluminium metal is heated to red hot in the presence of nitrogen gas, the compound formed is

A. Al₂N
B. Al₂N₂
C. AlN
D. Al₂N₃

Question 82:

• JAMB 2005

The most suitable metal that can be used as lightning conductor is

A. Silver
B. Copper
C. Iron
D. Aluminium

Question 83:

• JAMB 2005

Metalliods are also referred to as

A. Semi-metals
B. Metals
C. Colliods
D. Non-metals

Question 84:

• JAMB 2005

The ores that can be concentrated by flotation are

A. Nitride ores
B. Sulphide ores
C. Oxide ores
D. Non-metals

Question 85:

• JAMB 2005

Which of the following alloys contain iron?

A. Duralumin and steel
B. Brass and bronze
C. Steel and permalloy
D. Soft solder and duralumin