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Question

Gobar gas contains mainly


A

CH4+CO2

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B

CH4+O2

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C

CO2+H2

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D

CO2+SO2

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Solution

The correct option is A

CH4+CO2


The explanation for the correct answer:

Option (A) CH4+CO2

  • Under anaerobic conditions, certain bacteria break organic matter and produce biogas, which is a Renewable source.
  • Biogas is also known as Gobar gas.
  • It is a mixture of Methane (CH4), Hydrogen (H2) and Carbon dioxide (CO2)
  • The major constituents of biogas in which their percentage are: Methane (CH4)-50-75%, Carbon dioxide (CO2)-25-50%, Nitrogen (N2)-10-20%, Hydrogen (H2)-0-1%, Hydrogen sulphide (H2S)-0-3%, Oxygen (O2)-0-0.5%
  • As CH4+CO2 has the highest percentage of biogas constituents, they were the main constituents.

The explanation for Incorrect answers:

Option (B) CH4+O2

  • According to the percentage of the constituents, O2percentage is low.
  • So it cannot be considered as the main constituent of gobar gas.

Option (C) CO2+H2

  • As mentioned above, Hydrogen contains the lowest percentage of gobar gas.
  • So this is not the correct option.

Option (D) CO2+SO2

  • Gobar gas does not contain sulphur dioxide (SO2).
  • So CO2+SO2 cannot be considered correct.

Hence, Option (A) CH4+CO2 is correct.


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