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General Studies (Paper 1) from JKPSC JKAS 2021 Prelims
Subject: General Studies (Paper 1) Environment & Ecology Jammu & Kashmir Public Service Commission Last updated May 9, 2026
JKPSC Prelims 2021 General Studies (Paper 1)

What is ‘Biochar"? 

Answer & Explanation

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Correct Answer: Option C — A form of charcoal produced from heating organic matter
Biochar is a fine-grained, carbon-rich porous substance produced through a process called pyrolysis. It is highly stable and can persist in soils for hundreds or even thousands of years.Key Characteristics and BenefitsProduction: It is created by heating biomass (such as agricultural waste, wood chips, or manure) in a low-oxygen or oxygen-free environment.Carbon Sequestration: Unlike common charcoal, which is used for fuel, biochar is primarily used as a soil amendment. It helps mitigate climate change by "locking" carbon into the soil that would otherwise be released as $CO_2$ during decomposition.Soil Fertility: Its porous structure acts like a sponge, helping the soil retain water and nutrients. It also provides a habitat for beneficial soil microorganisms.Waste Management: It provides a productive way to manage agricultural and forestry waste, preventing it from being burned in the open.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.

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JKPSC JKAS 2021 Prelims

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Exam JKPSC
Recruitment JKAS
Stage Prelims
Year 2021
Subject General Studies (Paper 1)
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