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Consider the following statements regarding Black Carbon.
- Black carbon is a component of fine particulate matter, formed through the incomplete combustion of fossil fuels, biofuel, and biomass.
- In the tropics, black carbon in soils significantly contributes to the soil fertility.
- Black carbon significantly increases the albedo when deposited on snow and ice.
How many of the above statements is/are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements regarding Black Carbon. Black carbon...
Statement 3 is incorrect.
- Black carbon (BC) is a component of fine particulate matter. Black carbon consists of pure carbon in several linked forms. It is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot. Black carbon causes human morbidity and premature mortality.
- In climatology, black carbon is a climate forcing agent. Black carbon warms the Earth by absorbing sunlight and heating the atmosphere and by reducing albedo when deposited on snow and ice.
- In the tropics, black carbon in soils significantly contributes to fertility as it is able to absorb important plant nutrients.
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Community Answer
Consider the following statements regarding Black Carbon. Black carbon...
Statement 1: Black carbon is a component of fine particulate matter, formed through the incomplete combustion of fossil fuels, biofuel, and biomass.
Statement 2: In the tropics, black carbon in soils significantly contributes to soil fertility.
Statement 3: Black carbon significantly increases the albedo when deposited on snow and ice.
Explanation:
Statement 1: Black carbon is indeed a component of fine particulate matter. It is formed as a result of incomplete combustion of fossil fuels, biofuels, and biomass. When these fuels are burned, they release black carbon particles into the atmosphere, which contribute to air pollution. These particles are extremely small in size and can easily penetrate deep into the respiratory system, causing adverse health effects.
Statement 2: Black carbon in soils does not significantly contribute to soil fertility. In fact, excessive deposition of black carbon in soils can have negative impacts on soil health and fertility. Black carbon can alter soil properties, including pH, nutrient availability, and microbial activity, which can negatively affect plant growth and overall soil fertility. Therefore, statement 2 is incorrect.
Statement 3: Black carbon does indeed significantly increase the albedo when deposited on snow and ice. Albedo refers to the ability of a surface to reflect sunlight. When black carbon particles are deposited on snow and ice, they darken the surface, reducing its albedo. This leads to increased absorption of sunlight and accelerated melting of snow and ice. This phenomenon contributes to the warming of the Arctic and other snow and ice-covered regions. Therefore, statement 3 is correct.
Conclusion: Out of the three statements given, only statement 1 and statement 3 are correct. Therefore, the correct answer is option B - Only two.
Statement 2: In the tropics, black carbon in soils significantly contributes to soil fertility.
Statement 3: Black carbon significantly increases the albedo when deposited on snow and ice.
Explanation:
Statement 1: Black carbon is indeed a component of fine particulate matter. It is formed as a result of incomplete combustion of fossil fuels, biofuels, and biomass. When these fuels are burned, they release black carbon particles into the atmosphere, which contribute to air pollution. These particles are extremely small in size and can easily penetrate deep into the respiratory system, causing adverse health effects.
Statement 2: Black carbon in soils does not significantly contribute to soil fertility. In fact, excessive deposition of black carbon in soils can have negative impacts on soil health and fertility. Black carbon can alter soil properties, including pH, nutrient availability, and microbial activity, which can negatively affect plant growth and overall soil fertility. Therefore, statement 2 is incorrect.
Statement 3: Black carbon does indeed significantly increase the albedo when deposited on snow and ice. Albedo refers to the ability of a surface to reflect sunlight. When black carbon particles are deposited on snow and ice, they darken the surface, reducing its albedo. This leads to increased absorption of sunlight and accelerated melting of snow and ice. This phenomenon contributes to the warming of the Arctic and other snow and ice-covered regions. Therefore, statement 3 is correct.
Conclusion: Out of the three statements given, only statement 1 and statement 3 are correct. Therefore, the correct answer is option B - Only two.
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Consider the following statements regarding Black Carbon. Black carbon is a component of fine particulate matter, formed through the incomplete combustion of fossil fuels, biofuel, and biomass. In the tropics, black carbon in soils significantly contributes to the soil fertility. Black carbon significantly increases the albedo when deposited on snow and ice.How many of the above statements is/are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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