General Knowledge - General Knowledge:

Atmosphere

MCQ - 1081-6340

Question:

Unpolluted rain water has a pH of about 6. Which of the following gas causes this pH?

Carbon dioxide
Oxygen
Nitrogen dioxide
Oxygen

Correct Answer: A

Explanation:

pH 6 is slightly acidic.
Carbon dioxide dissolves in water to form carbonic acid, which is slightly acidic.
CO2 + H2O --> H2CO3
Nitrogen dioxide dissolves to form nitric acid while sulfur dioxide dissolves to form sulfuric acid, with a pH of about 3.

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2091 MCQ for effective preparation of the test of Atmosphere of General Knowledge section.

Read the MCQ statement: Unpolluted rain water has a pH of about 6. Which of the following gas causes this pH? , keenly and apply the method you have learn through the video lessons for Atmosphere to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 1081-6340.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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