Civil Services Prep

Prelims 2012 · Environment · Question 12

Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct?<br/>1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.<br/>2. The combustible gases generated consist of hydrogen and carbon dioxide only.<br/>3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.<br/><br/>Select the correct answer using the codes given below:

  1. 1 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer

1 only

1. Correct. Biomass gasifiers can use agro-residues like coconut shells, groundnut shells and rice husk as feedstock.

2. Incorrect. Producer gas from biomass gasification contains mainly carbon monoxide, hydrogen, methane, carbon dioxide and nitrogen; it is not only hydrogen and carbon dioxide.

3. Incorrect. Biomass gasifier gas can be used for direct heat generation and also in internal combustion engines after suitable cleaning.

Hence, only statement 1 is correct.

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