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.
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.
Related Questions
A compound X consists of molecules. Which of the following properties will be shown by X?
P — The boiling point of X is low.
Q — The compound X is soluble in water.
R — The aqueous solution of X does not conduct electricity.
- Only P
- Only Q
- Only R
- Both P and R
Assertion (A): HCl can be tested by AgNO3 solution.
Reason (R): White precipitate of AgCl is formed when AgNO3 is added to HCl.
- 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.
Assertion (A): On passing H2S through lead nitrate solution, a black precipitate is formed.
Reason (R): Lead nitrate reacts with H2S to form a black precipitate of PbS.
- 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.
Assertion (A): Chloride can be tested by adding concentrated sulphuric acid to it. A colourless gas with a pungent odour is evolved.
Reason (R): The gas formed is chlorine.
- 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.