Question : Sentences of a paragraph are given below. While the first and the last sentences ( 1 and 6) are in the correct order, the sentences in between are jumbled up (A to D). Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
1. Biogas is a mixture of methane, carbon dioxide and hydrogen with others.
A. Biogas is produced by anaerobic degradation of animal wastes (some plant wastes) in presence of water.
B. Thus, biogas is a non-polluting, cleaned and low cost fuel.
C. Anaerobic degradation means breakdown of organic matter which is done in the absence of oxygen.
D. It is mostly used in rural areas where ample animal and agricultural waste is available.
6. Biogas eliminates the risk of health hazards offered by other fuels.
Option 1: DABC
Option 2: CBDA
Option 3: ACBD
Option 4: BDAC
Correct Answer: ACBD
Solution : The correct choice is the third option .
The initial sentence (A) introduces the concept of biogas as a mixture of methane, carbon dioxide, and hydrogen. The subsequent sentence (C) explains the process of biogas production through anaerobic degradation, clarifying that it occurs in the absence of oxygen. The third sentence (B) follows by highlighting the positive aspects of biogas, stating that it is a non-polluting, clean, and low-cost fuel. Finally, the last sentence (D) concludes the paragraph by noting that biogas is primarily used in rural areas where ample animal and agricultural waste is available, eliminating the risk of health hazards associated with other fuels.
Therefore, the correct answer is ACBD.
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