Environmental Engineering Multiple Choice Questions on “Municipal Solid Waste”.
1. The process of burning of municipal solid waste at high temperature is called ____________
a) Incineration
b) Composting
c) Land filing
d) Shredding
Answer: a
Clarification: Incineration is the most sanitary method of disposal of municipal solid waste. Solid waste should have a high calorific value.
2. Which of the following is a biodegradable waste?
a) Polythene bags
b) Synthetic fiber
c) Food waste
d) Paper
Answer: c
Clarification: Polythene bags, synthetic fiber and paper are non biodegradable wastes whereas food waste is a biodegradable waste.
3. In which method of disposal of municipal solid waste, the waste is dumped in the soil?
a) Incineration
b) Composting
c) Land filing
d) Shredding
Answer: c
Clarification: Land filling is a process of disposal of solid waste under the soil. It is usually done in low lying areas to prevent unhygienic conditions.
4. Which of the following is correct regarding disposal of waste by land filling?
a) Economical method
b) Preferred in low lying areas
c) Foul gases are not produced
d) Separation of different types of waste not required
Answer: c
Clarification: Land fill gases are produced during the dumping of waste. They are foul smell creating unhygienic conditions.
5. The density of ash produced in the municipal solid waste is ___________
a) 100 kg/m3
b) 450 kg/m3
c) 700 kg/m3
d) 1000 kg/m3
Answer: c
Clarification: The range of the d density of ash produced from the municipal solid waste is 700-850kg/m3.
6. The process of decomposition of biodegradable solid waste by earthworms is called ___________
a) Land fills
b) Shredding
c) Vermi-composting
d) Composting
Answer: c
Clarification: The process of decomposition of biodegradable solid waste by earthworms is called Vermi-composting.
7. The waste produced in cotton mills are ___________
a) Municipal solid waste
b) Non biodegradable waste
c) Hazardous waste
d) Non hazardous waste
Answer: d
Clarification: The industrial waste is produced by cotton mills which are biodegradable and are non hazardous.
8. Which of the following is not the land filling method?
a) Bangalore method
b) Area method
c) Depression method
d) Trench method
Answer: a
Clarification: Bangalore method is a method of composting whereas area, depression and trench method are the land filling method.
9. ______ is a liquid that passes through solid waste and extracts suspended impurities from it.
a) Leachate
b) Sludge
c) Distilled water
d) Municipal waste
Answer: a
Clarification: Leachate is a liquid that passes through solid waste and extracts suspended impurities from it. It can be minimized by the use of clay lines.
10. Which of the following is not the municipal solid waste?
a) Radioactive substance
b) Ashes
c) Food waste
d) Rubbish
Answer: a
Clarification: Rubbish, food waste and food waste are municipal solid waste, whereas radioactive substances are industrial waste.
11. Which of the following waste can be decomposed by bacteria?
a) Radioactive substance
b) Ashes
c) Food waste
d) Rubbish
Answer: c
Clarification: Food waste can be decomposed by bacteria as they are biodegradable waste, whereas ashes, rubbish is non biodegradable.
12. ______ is the cutting and tearing of municipal solid waste.
a) Land fills
b) Shredding
c) Pulverization
d) Composting
Answer: b
Clarification: Shredding is the cutting and tearing of municipal solid waste. It helps in reducing the size and volume of municipal solid waste.
13. _________ is the crushing and grinding of municipal solid waste.
a) Land fills
b) Shredding
c) Pulverization
d) Composting
Answer: c
Clarification: Pulverization is the crushing and grinding of municipal solid waste. It changes the character of municipal solid waste and reduced its volume by 40%.
14. In which method of composting, decomposition of anaerobic waste takes place?
a) Indian method
b) Depression method
c) Bangalore method
d) Trench method
Answer: c
Clarification: In the Bangalore method of composting, decomposition of anaerobic waste takes place. It is better than the Indore method.
15. Which of the following is a biological method of disposal of municipal solid waste?
a) Land fills
b) Shredding
c) Pulverization
d) Composting
Answer: d
Clarification: Composting is a biological method of decomposing the municipal solid waste under aerobic and anaerobic condition. It results in the production of humus.