Question

Q.3 Read the following passage and make notes on it and also give a suitable title to it.
(4)
Passage-1
Biogas is a mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide, the major
constituent being methane. Biogas is produced by anaerobic degradation of animal wastes
(sometimes plant wastes) in the presence of water. Anaerobic degradation means break-down of
organic matter by bacteria in the absence of oxygen. Biogas is a non-polluting, clean and low-cost
fuel which is very useful for rural areas where a lot of animal waste and agricultural waste are
available. India has the largest cattle population in the world (240 million) and has tremendous
potential for biogas production. 'From cattle dung alone, we can produce biogas of a magnitude of
22,500 mm3 annually. Air-tight digestion/degradation of animal waste is safe as it eliminates health
hazards which normally occur in case of direct use of dung due to direct exposure to faecal
pathogens and parasites .​

Answer 1

Answer:

The complete notes are in the explanation below.

Explanation:

The suitable title for the passage will be biogas, as it has complete information about it.                        

                                      TITLE: BIOGAS

WHAT IS IT?

• Mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide.
• Produced by anaerobic degradation plant/animal waste in absence of water.

BENEFITS

• Non-polluting, clean, and low-cost fuel.
• Useful for rural areas.
• India having a large cattle population can produce biogas of a magnitude of 22,500 mm3 annually.
• Eliminates health hazards occurring due to direct exposure to faecal pathogens and parasites.​