Question

City garbage can be used to produce-

• A. Sewage sludge
• B. Useful article
• C. Biogas and manure
• D. All the above

Answer 1

The correct option is C

Biogas and manure

The correct option is C:

Explanation of correct option:

1. The waste product of households like vegetable peel, spoiled food, etc. per day is called garbage.
2. Garbage produces biogas and manure, The cattle dung is used in the biogas plant to produce biogas and also to obtain manure.

Explanation of Incorrect option:

Option A:

Sewage and sludge are used as a fertilizer as they contain organic nutrients from human faecal matter.

Option B:

The useful article can not be thrown as garbage as they may contain useful stuff and can be recycled.

Final answer:

1. Hence, the correct option is (c ) biogas and manure.