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?

  1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
  2. The combustible gases generated consist of hydrogen and carbon dioxide only.
  3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.

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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