Question
Which causes acid deposition?
A S
B Si
C SrO
D C
▶️Answer/Explanation
Ans: A
Acid deposition forms when sulfur dioxide (SO2) and nitrogen oxides (NOx) combine with moisture in the atmosphere to produce sulfuric acid and nitric acid.
Question
Which pH value is that of an aqueous solution of carbon dioxide?
A. 2.1
B. 5.6
C. 9.8
D. 12.2
▶️Answer/Explanation
B
An aqueous solution of Carbon dioxide is mildly acidic. Its pH would be around 5-6.
Question
Which of the following gases does not result in acid deposition?
A. CO2
B. NO2
C. NO
D. SO2
▶️Answer/Explanation
A
Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids.