Question

Match LIST-I with LIST-II:\[\begin{array}{|c|c|} \hline \textbf{LIST-I (Air pollutants)} & \textbf{LIST-II (Impact on human health)} \\ \hline \text{A. Particulates} & \text{III. Cause of coughing, shortness of breath, headache etc.} \\ \hline \text{B. Carbon mono-oxides} & \text{I. Impairs transport of O$_2$ in the bloodstream} \\ \hline \text{C. Sulfur oxides} & \text{IV. Cause respiratory illness} \\ \hline \text{D. Photochemical oxidants} & \text{II. Irritation of mucous membranes of the respiratory tract} \\ \hline \end{array}\] Choose the most appropriate match from the options given below:

• A. A - II, B - I, C - IV, D - III
• B. A - IV, B - I, C - II, D - III
• C. A - II, B - I, C - III, D - IV
• D. A - IV, B - III, C - II, D - I

Hint:

Different air pollutants affect health differently: CO affects oxygen transport, SO$_x$ causes illness, particulates irritate mucous membranes, and photochemical oxidants cause smog-related effects.

Answer 1

The Correct Option is A

Step 1: Particulates.
Particulates cause irritation of mucous membranes and respiratory tract. Hence, A → II.

Step 2: Carbon monoxide.
CO reduces oxygen carrying capacity of blood by binding with hemoglobin. Hence, B → I.

Step 3: Sulfur oxides.
SO$_x$ gases cause respiratory illness (bronchitis, asthma). Hence, C → IV.

Step 4: Photochemical oxidants.
These cause coughing, eye irritation, headaches, and shortness of breath. Hence, D → III.

Step 5: Conclusion.
Thus, the correct matching is A - II, B - I, C - IV, D - III. Correct answer is (A).