Methanogens are responsible for -

What does the part labeled '$X$' in the given figure represent?

The production of biogas in India is largely due to the efforts of .......

Mohan was writing a report on the benefits of biogas:
$i$. It is cheap and safe
$ii$. Can be used for cooking
$iii$. Can be transported easily
$iv$. Causes pollution
Which one of the above statements has been reported incorrectly?

Methanogen bacteria are:

Recently,the Government of India has permitted the blending of alcohol with petrol. What is the percentage of alcohol that can be blended with petrol?