R4RIN – MCQs, Mock Tests | Agricultural Engineering Agricultural Engineering MCQs Set-1

Which of the following is not a renewable source of energy?

1. Fossil fuels
2. Sun
3. Biomass
4. Wind

✅ Correct Answer: 1

Which of the following is a thermal application of solar energy?

1. Photovoltaic
2. Concentrating collectors
3. Solar cell
4. Electricity

✅ Correct Answer: 2

What is a solar collector?

1. A device that generates current
2. A device that collects and stores sunlight
3. A device that collects and concentrates sunlight
4. A device that filters sunlight

✅ Correct Answer: 3

What is a non-concentrating solar collector?

1. Collects and stores sunlight
2. Collects and concentrates sunlight
3. Reflects sunlight
4. Directly uses the incoming global radiation

✅ Correct Answer: 4

What is a concentrating solar collector?

1. Collects and concentrates sunlight on an absorber
2. Collects and concentrates sunlight on a reflector
3. Reflects sunlight
4. Directly uses the incoming global radiation

✅ Correct Answer: 1

What are the applications of concentrating solar collectors?

1. Domestic water heating
2. Desalination plants
3. Linear focusing
4. Point focusing

✅ Correct Answer: 2

How does geothermal energy work?

1. Uses water from the earth
2. Uses potential energy
3. Uses heat from the core of earth
4. Uses heat from atmosphere

✅ Correct Answer: 3

Which of the following do heat pumps use in geothermal energy?

1. Earth’s variable temperature
2. Variable electricity
3. Constant electricity
4. Earth’s constant temperature

✅ Correct Answer: 4

Which of the following is an application of hydro energy?

1. Flood risk management
2. Generating wind
3. Manufacturing
4. Environment damage

✅ Correct Answer: 1

Hydro energy provide water for irrigation

1. False
2. True
3.
4.

✅ Correct Answer: 2

Why are renewable resources preferred?

1. Cheap
2. Profitable
3. Release little greenhouse gases
4. Are freely available

✅ Correct Answer: 3

Which of the following is a thermal application of biomass?

1. Freezing
2. Anaerobic Digestion
3. Fermentation
4. Combustion

✅ Correct Answer: 4

Why is biomass gasification useful?

1. To get gases which can be used as fuel
2. To reduce solid waste
3. To increase solid waste
4. Biomass gasifiers are economical

✅ Correct Answer: 1

Which of the following use producer gas from biomass?

1. Hydrothermal plant
2. Paper and textile industry
3. Wind plants
4. Fuel cells

✅ Correct Answer: 2

Biomass is used to produce electricity.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which is an organic matter produced by plants in direct or indirect forms?

1. Solar energy
2. Biomass
3. Wind energy
4. Bio-fuel

✅ Correct Answer: 2

What type of energy is biomass energy?

1. Conventional energy
2. Non renewable
3. Commercial energy
4. Sustainable energy

✅ Correct Answer: 4

The use of biomass energy has the potential to greatly reduce greenhouse gas emissions.

1. True
2. False
3.
4.

✅ Correct Answer: 1

__________ is made by combining alcohol with vegetable oil, animal fat or recycled cooking grease.

1. Biodiesel
2. Biomass
3. Bioelectricity
4. Syngas

✅ Correct Answer: 1

What type of fire system is used in Bio power?

1. Hand firing
2. Mechanical stoke firing
3. Direct firing
4. Indirect firing

✅ Correct Answer: 3

Mixing biomass with fossil fuels in conventional power plants is referred to as ___________

1. Agitation
2. Infuse
3. Co-firing
4. Interbreed

✅ Correct Answer: 3

Which gas can be chemically converted into other fuels or products, burned in a conventional boiler, or used instead of natural gas in gas turbine?

1. Freon
2. Natural gas
3. Syngas
4. Noble gas

✅ Correct Answer: 3

What does natural decay of biomass produces?

1. Ozone
2. Methane
3. Ethane
4. Hydrogen

✅ Correct Answer: 2

What is used to decompose organic matter in absence of oxygen in closed reactors?

1. Slugs
2. Fungi
3. Natural consortia
4. Methane

✅ Correct Answer: 3

What is Ethanol called?

1. Phenol
2. Alcohol
3. Amino acid
4. Butanol

✅ Correct Answer: 2

Which type of bio products include Antifreeze, plastics, glues, artificial sweeteners, and gel for toothpaste?

1. Bio products made from sugars
2. Bio products made by waste products
3. Bio products made from decomposition
4. Bio products made from catalytic cracking

✅ Correct Answer: 1

What is BTU used to measure?

1. Heat content
2. Area
3. Density
4. Volume

✅ Correct Answer: 1

Which of the following can be classified under solid biomass?

1. Agricultural residues
2. Waste water
3. Industrial effluents into rivers
4. Plastic

✅ Correct Answer: 1

What are energy crops?

1. Crops grown to remove insects
2. Crops grown to be used in generating energy
3. Crops grown to feed people
4. Crops that produce energy

✅ Correct Answer: 2

Which of the following are examples of energy crops?

1. Banyan
2. Mango
3. Herbaceous and woody
4. Apple and herbaceous

✅ Correct Answer: 3

What are herbaceous crops?

1. Insecticides
2. Rice
3. Agricultural fertilizers
4. Agricultural byproducts

✅ Correct Answer: 4

Which of the following are examples of woody biomass?

1. Fallen trees due to natural disasters
2. Mint
3. Columbine
4. Agricultural byproducts

✅ Correct Answer: 1

Which of the following are examples of lipids?

1. Sugar
2. Palm oil
3. Glucose
4. Cellulose

✅ Correct Answer: 2

Which of the following can be used to replenish nutrients in soil?

1. Steel
2. Soda
3. Biomass ash
4. Coal ash

✅ Correct Answer: 3

Which of the following is an example of short rotation coppice?

1. Maize
2. Wheat
3. Corn
4. Willow

✅ Correct Answer: 4

Algae are used as feedstocks for bioenergy.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following found in municipal waste can be used as biomass?

1. Agricultural residue
2. Kitchen waste
3. Residential garbage
4. Plastic covers

✅ Correct Answer: 2

Land fill is an example of wet waste.

1. False
2. True
3.
4.

✅ Correct Answer: 2

__________ wastes are used as methane boosters.

1. Agricultural
2. Forestry
3. Industrial
4. Municipal

✅ Correct Answer: 3

__________ biomass is used for waste water treatment.

1. Agricultural
2. Industrial
3. Municipal
4. Aquatic

✅ Correct Answer: 4

Which of the following parameters is used to define sustainability of biogas feedstock?

1. Heating value
2. Calorific value
3. C:N ratio
4. Thermal voltage

✅ Correct Answer: 3

Which of the following is not a biomass resource?

1. Animal wastes
2. Forestry residue
3. Agricultural residue
4. Sunlight

✅ Correct Answer: 4

Which of the following is a substrate for biogas production?

1. Municipal and residential waste
2. E-waste
3. Metallic waste
4. Gaseous effluents

✅ Correct Answer: 1

Which of the following is a preferred substrate for biogas production? Note that TS stands for total solids.

1. Less than 1% TS
2. 20-40% TS
3. 1-5% TS
4. 5-10% TS

✅ Correct Answer: 2

What are the categories for organic dry matter on the basis of total solids (TS)?

1. Low grade, medium grade, high grade and fixed bed
2. Low grade, medium grade, fluidized bed and fixed bed
3. Low grade, medium grade, high grade and solids
4. Downdraft, circulation fluidized bed, high grade and fixed bed

✅ Correct Answer: 3

Which among the following is the best source for methane production?

1. Metallic scrap
2. E-waste
3. Plastic waste
4. Water hyacinth

✅ Correct Answer: 4

Which of the following is used to produce biogas from biomass?

1. Anaerobic treatment
2. Aerobic treatment
3. Fermentation
4. Pyrolysis

✅ Correct Answer: 1

Which of the following best indicates the steps of anaerobic digestion?

1. Waste water feed → biogas storage → generator → biogas
2. Waste water feed → digester → biogas → biogas storage → generator
3. Generator → waste water feed → digester → biogas → biogas storage
4. Waste water feed → biogas → digester → biogas storage → generator

✅ Correct Answer: 1

Which of the following best indicates the steps inside an anaerobic digester?

1. Hydrolysis → methanogenesis → acetogenesis → acidogenesis
2. Hydrolysis → acidogenesis → methanogenesis → acetogenesis
3. Hydrolysis → acidogenesis → acetogenesis → methanogenesis
4. Methanogenesis → acidogenesis → acetogenesis → hydrolysis

✅ Correct Answer: 3

What occurs in the hydrolysis step of anaerobic digestion?

1. Large polymers combine with water molecules
2. Large polymers break down to form water molecules
3. Small polymers combine to form large polymers with the help of water molecules
4. Large polymers break down into amino acids, fatty acids and simple sugars

✅ Correct Answer: 4