Q71. Which environmental concern is associated with large-scale cultivation of biomass feedstocks for energy production?
a) Deforestation
b) Soil erosion
c) Air pollution
d) Water scarcity
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Correct Answer: a) Deforestation
Explanation: Large-scale cultivation of biomass feedstocks for energy production, such as dedicated energy crops, can lead to deforestation and habitat destruction if natural ecosystems are converted into agricultural land. This can have adverse impacts on biodiversity and ecosystem services.
Q72. What is the main advantage of using biogas produced from organic waste?
a) Renewable energy source
b) High energy density
c) Low production cost
d) Minimal environmental impact
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Correct Answer: a) Renewable energy source
Explanation: Biogas produced from organic waste through anaerobic digestion is considered a renewable energy source because it is derived from biomass feedstocks that can be replenished through natural processes. It offers a sustainable solution for managing organic waste while generating renewable energy.
Q73. Which biomass energy technology involves the conversion of algae into biofuels?
a) Gasification
b) Fermentation
c) Hydrolysis
d) Algal biofuel production
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Correct Answer: d) Algal biofuel production
Explanation: Algal biofuel production is a biomass energy technology that involves cultivating algae and converting them into biofuels such as biodiesel or bioethanol. Algae have high lipid content, making them a promising feedstock for renewable fuel production.
Q74. Which factor determines the suitability of a biomass feedstock for energy production?
a) Color
b) Texture
c) Moisture content
d) Aroma
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Correct Answer: c) Moisture content
Explanation: The moisture content of a biomass feedstock is a critical factor that determines its suitability for energy production. High moisture content can reduce the efficiency of combustion or conversion processes, while low moisture content enhances energy yield.
Q75. Which type of biomass energy system involves converting organic waste into methane-rich biogas?
a) Biodiesel production
b) Biomass boiler
c) Anaerobic digestion
d) Gasification
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Correct Answer: c) Anaerobic digestion
Explanation: Anaerobic digestion is a biomass energy system that involves the biological decomposition of organic waste in the absence of oxygen, producing methane-rich biogas as a renewable energy source. This process is commonly used in biogas plants for waste treatment and energy recovery.