R4RIN – MCQs, Mock Tests | Agricultural Engineering Agricultural Engineering MCQs Set-3

Which of the following is most suitable for dry wastes?

1. Aerobic composting
2. Anaerobic composting
3. Closed vessel
4. Anaerobic digestion

✅ Correct Answer: 1

Which of the following is an end product of anaerobic composting which is a source of energy?

1. Biogas
2. Alcohol
3. Toxic products
4. Amino acid

✅ Correct Answer: 1

The degradation rate of anaerobic digestion is higher than that of aerobic digestion.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following is a characteristic of anaerobic digestion?

1. Low degradation rate
2. Low odor emission
3. Narrow suitability of wastes
4. Gas phase

✅ Correct Answer: 2

Which of the following is not a characteristic of aerobic digestion?

1. Low degradation rate
2. High odor emission
3. Narrow suitability of wastes
4. Post-treatment

✅ Correct Answer: 4

Which of the following factor doesn’t affect the growth of the technical expenditure?

1. Odor
2. Germs
3. Methane formation
4. Noise

✅ Correct Answer: 3

Which of the following is not an advantage of aerobic composting?

1. Simple process
2. Low-cost
3. Easy method
4. Very expensive

✅ Correct Answer: 4

In the arena of waste treatment, no process is the best.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following process is not used for waste treatment?

1. Aerobic composting
2. Anaerobic fermentation
3. Nuclear imaging
4. Vermicomposting

✅ Correct Answer: 3

What is a major advantage of anaerobic fermentation over aerobic composting?

1. Human control
2. Production of methane
3. High water content
4. Less water contents

✅ Correct Answer: 1

The process of burning of municipal solid waste at high temperature is called ____________

1. Incineration
2. Composting
3. Land filing
4. Shredding

✅ Correct Answer: 1

Which of the following is a biodegradable waste?

1. Polythene bags
2. Synthetic fiber
3. Food waste
4. Paper

✅ Correct Answer: 3

In which method of disposal of municipal solid waste, the waste is dumped in the soil?

1. Incineration
2. Composting
3. Land filing
4. Shredding

✅ Correct Answer: 3

Which of the following is correct regarding disposal of waste by land filling?

1. Economical method
2. Preferred in low lying areas
3. Foul gases are not produced
4. Separation of different types of waste not required

✅ Correct Answer: 3

The process of decomposition of biodegradable solid waste by earthworms is called ___________

1. Land fills
2. Shredding
3. Vermi-composting
4. Composting

✅ Correct Answer: 3

The waste produced in cotton mills are ___________

1. Municipal solid waste
2. Non biodegradable waste
3. Hazardous waste
4. Non hazardous waste

✅ Correct Answer: 4

Which of the following is not the land filling method?

1. Bangalore method
2. Area method
3. Depression method
4. Trench method

✅ Correct Answer: 1

______ is a liquid that passes through solid waste and extracts suspended impurities from it.

1. Leachate
2. Sludge
3. Distilled water
4. Municipal waste

✅ Correct Answer: 1

Which of the following is not the municipal solid waste?

1. Radioactive substance
2. Ashes
3. Food waste
4. Rubbish

✅ Correct Answer: 1

Which of the following waste can be decomposed by bacteria?

1. Radioactive substance
2. Ashes
3. Food waste
4. Rubbish

✅ Correct Answer: 3

______ is the cutting and tearing of municipal solid waste.

1. Land fills
2. Shredding
3. Pulverization
4. Composting

✅ Correct Answer: 2

_________ is the crushing and grinding of municipal solid waste.

1. Land fills
2. Shredding
3. Pulverization
4. Composting

✅ Correct Answer: 3

In which method of composting, decomposition of anaerobic waste takes place?

1. Indian method
2. Depression method
3. Bangalore method
4. Trench method

✅ Correct Answer: 3

Which of the following is a biological method of disposal of municipal solid waste?

1. Land fills
2. Shredding
3. Pulverization
4. Composting

✅ Correct Answer: 4

Which of the following is not a source of urban waste?

1. Municipal Services
2. Residential area of towns and cities
3. Industrial area
4. Rural waste

✅ Correct Answer: 4

Which of the following urban waste is not categorized as toxic waste?

1. Old medicines
2. Paints
3. Fertilizer
4. Agricultural wastes

✅ Correct Answer: 4

Disposal is the initial stage during solid waste management.

1. True
2. False
3.
4.

✅ Correct Answer: 2

Why waste has become an issue in urban areas?

1. Limited space
2. Less time
3. Less labor
4. More labor

✅ Correct Answer: 1

Which of the following reasons doesn’t worsen the problem of waste disposal in urban cities?

1. Odor
2. Population density
3. Urban area environmental demands
4. Insufficient water

✅ Correct Answer: 1

Cloth disposal is one of the biggest helps to landfills in today’s date.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following methods can be used to generate huge amount of energy?

1. Dumping
2. Gasification
3. Incineration
4. Urban solid waste

✅ Correct Answer: 4

Several urban dwellers earn their livelihood from items recovered from urban solid wastes.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following method cannot be used for disposal and treatment of urban organic waste?

1. Anaerobic compost
2. Sanitary landfill
3. Aerobic compost
4. Secure landfill

✅ Correct Answer: 4

Which of the following is a natural way of composting?

1. Vermicomposting
2. Landfill
3. Incineration
4. Sanitary landfill

✅ Correct Answer: 1

Why secure landfill is used?

1. For vermicomposting
2. To dispose hazardous waste
3. For Incineration
4. For recycling

✅ Correct Answer: 2

Which of the following is a biomedical waste?

1. Waste from veterinary institutions
2. Waste from construction areas
3. Garbage
4. Ashes

✅ Correct Answer: 1

Which of the following is used to dispose of the waste generated in urban areas?

1. Low lying areas
2. Residential area of towns and cities
3. Industrial area
4. Rural waste

✅ Correct Answer: 1

At the disposal sites, which of the following methods is used to reduce the volume of urban waste?

1. Bulldozer leveling
2. Open burning
3. Fertilizer
4. Incineration

✅ Correct Answer: 2

Open burning at the disposal sites causes severe noise pollution.

1. True
2. False
3.
4.

✅ Correct Answer: 2

What is the major environmental concern related to landfill?

1. Limited space
2. Limited technology
3. Less man-power
4. Discharge of leachates

✅ Correct Answer: 4

Which of the following treatment shouldn’t be used for pre-treatment of solid waste?

1. Mechanical treatment
2. Biological treatment
3. Thermal treatment
4. Heavy metal treatment

✅ Correct Answer: 4

Aerobic degradation of waste in landfills is usually of very less time.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following mechanism can’t be used to regulate mass from waste to leaching water?

1. Hydrolysis
2. Addition of heavy metals
3. Biological degradation
4. Solubilisation

✅ Correct Answer: 2

Which of the following phases is not identified in anaerobic degradation?

1. Anaerobic phase
2. Methanogenic fermentation
3. Aerobic compost
4. Acid fermentation

✅ Correct Answer: 3

Which of the following is not an environmental monitoring method?

1. Ground water monitoring
2. Landfill sealing
3. Quality of leachate
4. Biodegradation

✅ Correct Answer: 4

What is the method that fills in gas into the landfills?

1. Vermicomposting
2. In-situ aeration
3. Incineration
4. Recycling

✅ Correct Answer: 2

Which of the following characteristics is not important to hazardous wastes?

1. Quantity
2. Concentration
3. Color
4. Physical or chemical properties

✅ Correct Answer: 3

Which of the following is not an ill-effect of improper handling of hazardous waste?

1. Increase in mortality rate
2. Irreversible illness
3. Threat to the environment
4. Decrease in mortality rate

✅ Correct Answer: 4

It is the responsibility of the civilians to take care of the disposed of hazardous wastes.

1. True
2. False
3.
4.

✅ Correct Answer: 2

Which of the following is not a serious hazardous characteristic of the waste?

1. Toxicity
2. Ignitability
3. Corrosiveness
4. Degradability

✅ Correct Answer: 4