Green Muffler is

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Q: 72 (CAPF/2012)
Green Muffler is

question_subject: 

Science

question_exam: 

CAPF

stats: 

0,68,56,35,18,68,3

keywords: 

{'green muffler': [0, 0, 0, 1], 'noise pollution': [1, 0, 0, 4], 'air pollution': [5, 0, 0, 3], 'vibration': [0, 0, 2, 2], 'technology': [1, 5, 15, 27], 'roadsides': [0, 0, 0, 1]}

The correct answer is option-3: plantation along roadsides to reduce noise pollution.

Option-1: This option suggests that Green Muffler is a technology for reducing air pollution. However, this does not align with the given answer, which states that it is related to reducing noise pollution.

Option-2: This option states that Green Muffler is a method of afforestation. Afforestation refers to the process of establishing a forest, typically by planting trees. While afforestation can have environmental benefits, the given answer specifically mentions reducing noise pollution, not afforestation.

Option-4: This option suggests that Green Muffler is a process of reducing vibration. While reducing vibration can potentially reduce noise, the given answer specifically mentions plantation along roadsides to reduce noise pollution.

Therefore, option-3 is the best fit based on the given answer. It implies that Green Muffler refers to planting trees or vegetation alongside roads to act as a barrier and reduce the noise pollution generated by traffic.

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