Chemistry
Assertion (A): SO2 and CO2 can be distinguished by lime water.
Reason (R): Both turn lime water milky.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Practical Chemistry
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Answer
A is false but R is true.
Explanation— SO2 and CO2 cannot be distinguished by lime water, because both turn lime water milky. Hence, the assertion (A) is false.
Ca(OH)2 + SO2 ⟶ CaSO3↓ + H2O
Ca(OH)2 + CO2 ⟶ CaCO3↓ + H2O
SO2 and CO2 turn lime water milky. Hence, the reason (R) is true.
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