iGCSE Chemistry Multiple Choice (Extended) : 10.3 Air quality and climate: Exam Style Questions Paper 2

Question

Which information about carbon dioxide and methane is correct?

Answer/Explanation

Ans:

B

Question

Which process does not produce carbon dioxide?
A combustion of a hydrocarbon
B photosynthesis
C reaction between an acid and a metal carbonate
D respiration

Answer/Explanation

Ans: B

Question

Which process removes carbon dioxide from the atmosphere?
A combustion of fossil fuels
B fermentation
C photosynthesis
D respiration

Answer/Explanation

Ans: C

Question

The carbon cycle is shown.

Which row describes processes X, Y and Z?

Answer/Explanation

Ans:

C

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