Air - Jamb Chemistry Past Questions and Answers

Question 11:

• JAMB 1992

Which of these statements is TRUE about carbon (IV) oxide?

A. It supports combustion
B. It is strongly acidic in water
C. It is very soluble in water
D. It supports the buring of magnesium to produce magnesium oxide

Question 12:

• JAMB 1992

Which of the following oxides of nitrogen is unstable in air?

A. NO₂
B. NO
C. N₂O₄
D. N₂O_5-

Question 13:

• JAMB 1993

Argon is used in gas-filled electric lamp because it helps to?

A. Prevent the reduction of the lamp fillaments
B. Prevent oxidation of the lamp fillaments
C. Make the lamp fillament glow brightly
D. Keep the atmosphere in the lamp inert

Question 14:

• JAMB 1993

The air around a petroleum refinery is most likely to contain?

A. CO₂, SO₃ and N₂O
B. CO₂, CO and N₂O
C. SO₂, CO and NO₂
D. PH₃ H₂O and CO₂

Question 15:

• JAMB 1994

The set-up above would be useful for determining the amount of

A. Oxygen in air
B. Water vapour in air
C. CO₂ in air
D. Arygen in air