Which of the following is the most abundant hydrocarbon which is emitted into the atmosphere by biological activity?
A. Ethane
B. Methane
C. Poly Aromatic hydrocarbons
D. Pentane
Answer:B
Which of the following is the most abundant hydrocarbon which is emitted into the atmosphere by biological activity?
A. Ethane B. Methane C. Poly Aromatic hydrocarbons D. Pentane
Explanation: The most abundant hydrocarbon which is emitted into the atmosphere by biological activity is methane. It is also emitted by automobile exhausts, burning of coal, etc.