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Select the incorrect statement. I. Sul...

Select the incorrect statement.
I. Sulphur dioxide gas combines with haemoglobin of blood and prevents transport of oxygen by it.
II. Methane, nitrous oxide and water vapour present in atmospheric air contribute to global warming.
III. Lead emitted by automobile exhaust could cause brain damage.
IV. Oxides of sulphur and nitrogen present in air could affect lungs.

A

I only

B

I and IV only

C

I, II and IV only

D

I and lII only

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate each of the given statements and identify which one is incorrect. ### Step-by-Step Solution: 1. **Analyze Statement I**: - "Sulphur dioxide gas combines with haemoglobin of blood and prevents transport of oxygen by it." - **Evaluation**: This statement is incorrect. Sulphur dioxide does not combine with hemoglobin; instead, it is carbon monoxide that binds to hemoglobin, preventing oxygen transport. 2. **Analyze Statement II**: - "Methane, nitrous oxide and water vapour present in atmospheric air contribute to global warming." - **Evaluation**: This statement is correct. Methane and nitrous oxide are known greenhouse gases that contribute to global warming, and water vapor also plays a role in the greenhouse effect. 3. **Analyze Statement III**: - "Lead emitted by automobile exhaust could cause brain damage." - **Evaluation**: This statement is correct. Lead is a toxic metal that can cause serious health issues, including brain damage, especially in children. 4. **Analyze Statement IV**: - "Oxides of sulphur and nitrogen present in air could affect lungs." - **Evaluation**: This statement is correct. Sulfur oxides and nitrogen oxides are pollutants that can cause respiratory problems and affect lung health. 5. **Conclusion**: - The only incorrect statement is Statement I. Therefore, the answer to the question is Statement I. ### Final Answer: The incorrect statement is **I**. ---
To solve the question, we need to evaluate each of the given statements and identify which one is incorrect. ### Step-by-Step Solution: 1. **Analyze Statement I**: - "Sulphur dioxide gas combines with haemoglobin of blood and prevents transport of oxygen by it." - **Evaluation**: This statement is incorrect. Sulphur dioxide does not combine with hemoglobin; instead, it is carbon monoxide that binds to hemoglobin, preventing oxygen transport. ...
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