Question

Which of the following statement(s) is/are correct?

• A. Increased levels of carbon monoxide in the indoor environment result in the formation of carboxyhemoglobin and the long term exposure becomes a cause of cardiovascular diseases.
• B. Volatile organic compounds act as one of the precursors to the formation of photochemical smog in the presence of sunlight.
• C. Long term exposure to the increased level of photochemical smog becomes a cause of chest constriction and irritation of the mucous membrane.
• D. Increased levels of volatile organic compounds in the indoor environment will result in the formation of photochemical smog which is a cause of cardiovascular diseases.

Hint:

Long-term exposure to indoor pollutants such as carbon monoxide and volatile organic compounds can have serious health effects, including cardiovascular and respiratory diseases.

Answer 1

The Correct Option is A, B, C

- Option (A) is correct: Increased levels of carbon monoxide (CO) in the indoor environment can lead to the formation of carboxyhemoglobin. Long-term exposure to elevated CO levels can indeed cause cardiovascular diseases, as it reduces the oxygen-carrying capacity of blood.

- Option (B) is correct: Volatile organic compounds (VOCs) are indeed precursors to the formation of photochemical smog. These compounds react in the presence of sunlight to form ozone, which contributes to smog formation.

- Option (C) is correct: Long-term exposure to high levels of photochemical smog, which contains harmful pollutants like ozone, can lead to respiratory issues, including chest constriction and irritation of the mucous membrane.

- Option (D) is incorrect: While VOCs contribute to photochemical smog, they do not directly cause cardiovascular diseases. Instead, they contribute to respiratory problems and smog formation.

Thus, the correct options are (A), (B), and (C).

Final Answer: (A), (B), (C)