Match Column A and B and select the correct answer using the codes given below :
Column-A – Column-B
(a) Asthma – (i) Caused by smog
(b) Smog – (ii) Polluting gas
(c) Sulphur dioxide – (iii) Mercury
(d) Minamata disease – (iv) Fog and smoke

Question

Match Column A and B and select the correct answer using the codes given below : 
Column-A – Column-B
(a) Asthma – (i) Caused by smog	
(b) Smog – (ii) Polluting gas	
(c) Sulphur dioxide – (iii) Mercury	
(d) Minamata disease – (iv) Fog and smoke

Accepted Answer

Column A and Column B need to be matched correctly based on the given options. Let's analyze each pair:

1. **Asthma**: Asthma is a respiratory condition that can be exacerbated by various environmental factors, including air pollution. However, it is not directly caused by smog, although smog can worsen asthma symptoms. Therefore, (i) "Caused by smog" is not the most accurate match for Asthma.

2. **Smog**: Smog is a type of air pollution that is a combination of fog and smoke, often containing harmful pollutants. The correct match for smog is (iv) "Fog and disease smoke," as it accurately describes the composition of smog.

3. **Sulphur dioxide**: Sulphur dioxide is a significant air pollutant and a harmful gas that contributes to air pollution. It is correctly matched with (ii) "Polluting gas," as sulphur dioxide is indeed a polluting gas that can cause respiratory problems and environmental harm.

4. **Minamata**: Minamata disease is a neurological syndrome caused by severe mercury poisoning. It is named after Minamata Bay in Japan, where industrial mercury pollution led to widespread health issues. Therefore, Minamata is correctly matched with (iii) "Mercury."

The correct answer is Option 3, which matches Sulphur dioxide with (ii) "Polluting gas." This is the correct match because sulphur dioxide is indeed a well-known polluting gas, and this option accurately reflects the relationship between the two.

The other options are incorrect because they do not provide the most accurate or direct matches for the terms in Column A. Option 3 is the only one that correctly aligns with the factual information about sulphur dioxide being a polluting gas.