9701 MCQ Solution 19

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Question 19: [Inorganic > Nitrogen and Sulfur]:
Which gas is present in the exhaust fumes of a car engine in a much greater amount than any other gas?

A carbon dioxide
B carbon monoxide
C nitrogen
D water vapour
Reference: Past Exam Paper – November 2002 Paper 1 Q19



Solution 19:
Answer: C.

The composition of air is 79% nitrogen. When this enters a car’s combustion chamber, it is mostly unreactive, and passes back out with the other fumes.

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