Question

Assertion :Smog is commonly formed at places having low temperature and high pollution of aerosols. Reason: It is very common in metropolis cities of India.

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

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Smog is a common problem in many large urban areas, where human activity gives rise to particulates in the air. It can be exacerbated significantly by weather conditions (e.g., temperature inversions) and a local geography (e.g., surrounding mountains), that can prevent particulates from being dispersed naturally by winds. It is more closely associated with automobile and industrial emissions, that interact frequently to create the particles that cause smog. Smog is the interaction of light with fine solid or liquid particles in the air, known as aerosols. The most common cause of photochemical smog is the interaction of nitrogen oxides (or NOx) and 'Volatile Organic Compounds' (or VOCs). Thus, the correct answer is option A.