Read the following and answer the questions from 1 to 5 that follow on the basis of information provided and studied concepts.
A biogas plant is where biogas is produced by fermenting biomass.
1. In which of the parts would you find anaerobic bacteria
a) A
b) B
c) C
d) D
2. Which one of the following is NOT correct for biogas
a) its carbon neutral
b) its non-renewable
c) it depends on micro-organisms
d) yields rich manure
3. Which of the following best indicates the steps of anaerobic digestion?
a) Waste water feed → biogas storage → generator → biogas
b) Waste water feed → digester → biogas → biogas storage → generator
c) Generator → waste water feed → digester → biogas → biogas storage
d) Waste water feed → biogas → digester → biogas storage → generator
4. Biogas is a better fuel than animal dung cake because
a) Biogas is a renewable source of energy
b) Animal dung cake has higher calorific value
c) Biogas has high heating capacity
d) Biogas burns without smoke.
i. (a) only
ii. (b) only
iii. (c) and (d)
iv. (a) and (b)
5. Biogas is formed in the
a) presence of air only
b) presence of water only
c) presence of air and absence of water
d) presence of water and absence of air.
