Importance of Biogas

Q.

Name four gases commonly present in biogas.

Q.

Biogas is considered to be a boon to the farmers, give reasons.

Q. Animal excreta and organic waste from kitchen can be profitably used for production of

1. Using them for producing biogas
2. Storing them in underground storage tanks
3. Vermiculture
4. Using them directly as fertilizer

Q.

Pollution from animal excreta and organic waste from the kitchen can be most profitably minimised by

1. Using them for producing biogas

2. Storing them in underground storage tanks

3. Vermiculture

4. Using them directly as biofertilisers

Q.

Common energy source in Indian villages is:

1. Electricity

2. Coal

3. Sun

4. Wood and animal dung

Q. BHC and DDT belong to which class of pesticides?

1. Organophosphates
2. Organochlorines
3. Carbonates
4. Triazines

Q. Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Pencillin and Curd.

Q. The dried spent slurry obtained after the production of biogas is an excellent:

1. fuel
2. pesticide
3. manure
4. none of these

Q.

Common energy source in Indian villages is:

1. Electricity

2. Coal

3. Sun

4. Wood and animal dung

Q. Animal excreta and organic waste from kitchen can be profitably used for production of

1. Pesticides
2. Biogas
3. Antibiotics
4. None of the above

Q. For the production of biogas, the biogas plant requires

1. Molasses
2. Cattle dung
3. Vegetable peels
4. All of the above

Q.

Common energy source in Indian villages is:

1. Wood and animal dung

2. Sun

3. Coal

4. Electricity

Q. Assertion :Methane is a component of greenhouse gases and contributing to global warming about 20 percent. Reason: Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. Producer gas is formed by passing over hot biomass.

1. Steam
2. Air
3. Hydrogen
4. Both A and B

Q. Write any four liquid biofuels for transportation.

Q. Which toxic substance is found in tobacco?

Q. The main source of biomass energy is

1. Cow-dung
2. Thermal energy
3. Heat energy
4. Coal

Q. Animal excreta and organic waste from kitchen can be profitably used for production of

1. Pesticides
2. Biogas
3. Antibiotics
4. None of the above

Q. Which one is not matched?

1. Organochlorine - DDT
2. Pyrethroid - Atrazine
3. Organophosphate - Malathion
4. Carbamate - Carbofuran

Q. The fermentation of animal dung slurry is carried by

1. aerobic fermentation
2. anaerobic fermentation
3. either (a) or (b)
4. none of these