Jamb Chemistry 2007 Past Questions and Answers

Question 1:

• JAMB 2007

Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it

A. Is strongly oxidizing
B. Is volatile
C. Renders the metal passive
D. Forms a layer of oxide on the metal

Question 2:

• JAMB 2007

Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it

A. Is strongly oxidizing
B. Is volatile
C. Renders the metal passive
D. Forms a layer of oxide on the metal

Question 3:

• JAMB 2007

An element used in the production of matches is

A. Nitrogen
B. Aluminium
C. Copper
D. Sulphur

Question 4:

• JAMB 2007

When calcium oxide is heated with carbon, the oxide will

A. Be converted to carbide
B. Be converted to the trioxocarbonate (IV) salt
C. Decompose to the metal
D. Melt,producingg carbon (IV) oxide

Question 5:

• JAMB 2007

A solution which on treatment with hydrochloric acid produces a colourless, odourless gas which turns lime water milky is most likely to be a

A. Trioxonitrate (V)
B. Chloride
C. Trioxocarbonate (IV)
D. Hydroxide