Metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 91:

• JAMB 2008

Which of the following compounds of trioxonitrate (V) will decomposes to give dinitrogen (i) oxide and water when heated?

A. NaNO₃
B. Zn(NO₃)₂
C. Cu(NO₃)₂
D. NH₄NO₃

Question 92:

• JAMB 2008

The most common ores of iron include

A. Haematite, malachite and limonite
B. Chalcolite, calamine and bornite
C. Magnetite, haematite and bornite
D. Magnetite, chalcolite and bornite

Question 93:

• JAMB 2009

Which of the following allotrope of carbon is a constituent of a lead pencil?

A. Graphite
B. Diamond
C. Lampblack
D. Soot

Question 94:

• JAMB 2009

which of the following metals will show the highest metallic character?

A. Zinc
B. Copper
C. Barium
D. Calcium

Question 95:

• JAMB 2009

Copper metal dissolves in concentrated trioxonitrate (V) acid with the resultant evolution of

A. CO₂
B. SO₂
C. NO₂
D. CO