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Question

Assertion :The effects of particulate pollutants are largely dependent on the particle size. Reason: Air-borne particles such as dust, fumes, mist etc., are dangerous for human health.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
As the rate of penetration of the particulate is inversely proportional to the size of the particles, the effect of particulate pollutant depends on the size of particles. Whereas the particles such as dust, fumes must be formed by breaking the large particles into small particles on condensing them into droplets.

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