Composting

Q.

What are the advantages of using a compost? [3 MARKS]

Q. ___ is the process in which organic wastes are degraded into manure by the actions of microorganisms.

1. Composting

Q.

Which is the right way of disposing garbage?

1. Dumping into a big heap on the side of the road

2. Digging pits and after dumping covering it with soil

3. Dumping into water bodies

4. Dumping into empty space of land and spreading it all over

Q.

Method of making compost using___is called vermicomposting.

Q.

What are the useful parts of garbage? Name 2 useful components of garbage. [2 MARKS]

Q.

Do you think that it is better to use compost instead of chemical fertilisers? Why?

Q.

Redworms eat upon grasses, and leaves and make the compost.

1. True
2. False

Q.

Method of making compost using___is called vermicomposting.

Q. State the advantages of composting.

Q.

A compost pile undergoes aerobic decomposition.

1. True

2. False

Q.

The method of waste disposal in which the buried waste after a few days is reused as manure.

1. Dumping

2. Sewage Treatment

3. Composting

4. Sedimentation

Q. __________ is a process in which various organisms including bacteria and fungi break down organic matter into simpler substances under controlled aerobic conditions.

1. Segregation
2. Composting
3. Drainage
4. Dumping

Q. Write any two benefits of composting.

Q. What is a sanitary landfill?

Q.

The best way of treating kitchen waste is ___ .

1. incineration

2. reusing

3. composting

4. disposal

Q. What do you mean by the following terms?
(i) Segregation
(ii) Composting
(iii) Dumping.

Q. What is the difference between composting and vermicomposting? [2 marks]

Q.

Which of the following methods is not appropriate for the disposal of vegetable peels?

1. Disposal in garbage bins

2. Dumping in landfills

3. Incineration

4. Composting

Q. The composting process is carried out by __________.

1. Psychrophiles - low-temperature microbes
2. Thermophiles - high-temperature microbes
3. Mesophiles - medium temperature microbes
4. All of these

Q. The process which involves in the decomposition of organic waste into humus is known as ___________.

1. manure
2. none of the above
3. fertilizer
4. compost

Q. Distinguish between aerobic and anaerobic composting.

Q. Why do we need gases for vermicomposting ??

Q. Differentiate between composting and landfills.

Q. What percent of the moisture content is beneficial for biological breakdown of the waste?

1. 40%
2. 45%
3. 50%
4. 55%

Q. If you dump kitchen waste in a pit, it may, after sometime

1. Remain as such.
2. Convert into vermicompost.
3. Convert into compost.
4. Remain forever in its dried form.

Q. Write short notes on the following:
(i) Segregation
(ii) Dumping
(iii) Composting

Q.

Which of the following methods is not appropriate for the disposal of vegetable peels?

1. Disposal in garbage bins

2. Composting

3. Incineration

4. Dumping in landfills

Q.

Cow dung is added in the composting pit to ___

1. give a proper smell to the compost.

2. keep away people and animals from it.

3. act as a source of micro-organisms.

4. give compost proper weight.

Q. Which of the following are the major benefits of composting?

1. It enhances soil nutrients and water retention capacity of soils
2. It rejuvenates poor soil by adding humus
3. All of the above
4. It suppresses plant disease