Which of the following gases is not generated in a biogas plant?

The underground well of a biogas plant is called the

A

Septic tank

B

Oxidation well

C

Digestor

D

Lagoon

Which of the following is not a constituent of biogas?

A

Carbon dioxide

B

Hydrogen Sulphide

C

Methane

D

Carbon Monoxide

Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

A

CO₂

B

H₂

C

SO₃

D

N₂

The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be

A

$$\frac{{\text{E}}}{2}$$

B

2E

C

Slightly less than E

D

E

The biogas used for cooking is a mixture of which of the following?

A

Carbon dioxide and oxygen

B

Isobutane and propane

C

Methane and carbon monoxide

D

Methane and carbon dioxide

Which one of the following is the largest composition in biogas?

A

Carbon dioxide

B

Methane

C

Hydrogen

D

Hydrogen sulphide

The main constituent of biogas is

A

Butane

B

Methane

C

Hydrogen Sulphide

D

Carbondioxide

The main source of production of biogas is

A

human waste

B

wet cow dung

C

wet livestock waste

D

all above

Main constituents of biogas are

A

Methane and carbon monoxide

B

Butane and carbon monoxide

C

Methane and carbon dioxide

D

Ethylene and carbon dioxide

________ is a by product of sewage treatment and can be decomposed to produce biogas

A

Sewage

B

Sludge

C

Sewer

D

Scum

Which of the following gases is not generated in a biogas plant?

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