Jamb Chemistry 2009 Past Questions and Answers

Question 31:

• JAMB 2009

The oxidation of ammonia in excess air produces

A. NO
B. N₂O
C. NO₂
D. N₂O₄

Question 32:

• JAMB 2009

Hydrogen sulphide gas can act as

A. An oxidizing agent
B. A dehydrating agent
C. A bleaching agent
D. A precipitating agent

Question 33:

• JAMB 2009

The gasification of coke is used for the manufacturing of

A. Producer gas
B. Natural gas
C. Synthetic gas
D. Industrial gas

Question 34:

• JAMB 2009

The gas that is most useful in protecting humans against solar radiation is

A. Chlorine
B. Ozone
C. Carbon (IV) oxide
D. Hydrogen sulphide

Question 35:

• JAMB 2009

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

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