Metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 86:

• JAMB 2006

Carbon exist naturally in the combined state as

A. Graphite
B. Coal
C. Diamond
D. Wood

Question 87:

• JAMB 2007

The soft solder used for welding and plumbing is alloy of

A. Lead and tin
B. Iron and tin
C. Lead and zinc
D. Iron and zinc

Question 88:

• JAMB 2007

Copper and silver metals are commonly use as coin because they are

A. Easily reduced
B. Not easily reduced
C. Easily oxidized
D. Not easily oxidized

Question 89:

• JAMB 2007

Which of the following sets of metals dissolves in dilute HCl?

A. Fe, Sn and Cu
B. Mg, Fe and Cu
C. Mg, Sn and Fe
D. Cu, Mg and Sn

Question 90:

• JAMB 2008

The substance that is used in the steel industry for the removal of carbon, sulphur and phosphorus impurities from pig iron is

A. Oxygen
B. Chlorine
C. Nitrogen
D. Hydrogen