Biogas Production

Q.

What gases are produced in anaerobic sludge digesters?

1. Methane and $C{O}_2$

2. Methane, hydrogen sulphide and $C{O}_2$

3. Methane, hydrogen sulphide and $C{O}_2$

4. Hydrogen sulphide and $C{O}_2$

Q. Besides dung, the weed which can be used in biogas production is

1. Hydrilla
2. Solanum nigrum
3. Eichhornia crassipes
4. None of the above

Q.

Biogas is produced under _____________ conditions by fermentation of biological materials.

1. aerobic and anaerobic

2. anaerobic

3. aerobic

4. none

Q.

Regarding the given assertion and reason, choose the right option.

Assertion [A] : Biogas plants are usually built in rural areas.
Reason [R] : Cattle dung is available in large quantities in such areas.

1. Both A and R are correct and R is the correct explanation of A.

2. Both A and R are correct and R is not the explanation of A.

3. A is correct and R is incorrect.

4. Both A and R are incorrect.

Q.

Which of the following is mainly produced by the activity of anaerobic bacteria on cowdung?

1. bog gas

2. Laughing gas

3. Propane

4. Mustard gas

Q. Regarding the assertion and reason, select the right option.
Assertion: Bioenergy is the energy available from biological sources
Reason: Fossil fuels are examples of bioenergy.

1. Both the assertion and reason are true and the reason is the correct explanation for the assertion.
2. Both the assertion and reason are true but the reason is not the correct explanation of the assertion.
3. The assertion is true, but the reason is false
4. Both the assertion and reason are false.

Q. Biofuel can be produced from:

1. Agricultural waste

2. Organic waste

3. Human waste

4. Electronic waste