Question

Sulphur dioxide affects

• A. Haemoglobin of blood
• B. Arteries
• C. Alveoli of lungs
• D. Nerves

Answer 1

The correct option is C

Alveoli of lungs

The correct option is C.

Explanation of the correct option:

1. Sulphur dioxide is a colourless gas that is released by the combustion of fossil fuel, petroleum refineries, smelting of metals, etc.
2. It causes irritation in the lungs and problems in breathing due to inflammation of the mucous membrane of alveoli.
3. It can even cause asthma and chronic bronchitis.

Explanation of the incorrect option:

Option A:

Carbon monoxide is a toxic gas that affects haemoglobin by replacing it with oxygen and causes effects like dizziness, confusion or even death.

Option B:

Oxygen and carbon dioxide are two gases that deal with the arteries during respiration.

Option D:

Sarin is a toxic gas that is absorbed into the bloodstream and paralyzes the nervous system after inhalation or contact with the skin.

Final answer: Sulphur dioxide affects the alveoli of lungs.