AIIMS2000Chemistry-Coal Gas Composition
AIIMS 2000 Chemistry Methane Percentage in Coal Gas MCQ Question
Type: MCQ-fact-Easy-Class 12
The percentage of CH₄ in coal gas is
A
10-15%
B
25-35%
C
2-5%
D
35-50%
Correct Answer
Option B
Detailed Explanation
Coal gas, also known as town gas, is a mixture of gases produced from coal, primarily composed of methane (CH₄), hydrogen (H₂), carbon monoxide (CO), and other gases. The percentage of methane in coal gas typically ranges from 25% to 35%. This range is due to the production process and the type of coal used.
- Option A (10-15%) is incorrect because it underestimates the methane content in coal gas.
- Option C (2-5%) is also incorrect as it significantly underestimates the methane concentration.
- Option D (35-50%) is incorrect because while methane can reach up to 35%, it does not typically exceed this percentage in standard coal gas. Therefore, the correct answer is B (25-35%).
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