With reference to two non-conventional energy sources called ‘coal bed methane’ and ‘shale gas’, consider the following statements: 1. Coal bed methane is the pure methane gas extracted from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fine-grained sedimentary rocks. 2. In India abundant coal bed methane sources exist, but so far no shale gas sources have been found. Which of the statements given above is/are correct?
Explanation
Statement 1 is incorrect: Coal bed methane is indeed pure methane gas extracted from coal seams. However, shale gas is not a mixture of propane and butane only. Shale gas is primarily composed of methane, similar to coal bed methane, and can be extracted from fine-grained sedimentary rocks, specifically shale formations. So, the first part of the statement is correct, but the second part is incorrect.
Statement 2 is incorrect: It's not accurate to say that no shale gas sources have been found in India. While it's true that coal-bed methane sources are abundant in India, shale gas sources have also been identified, although their exploitation is at a nascent stage compared to coal-bed methane.
Therefore, neither of the statements is entirely correct.