Chemistry
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.
Practical Chemistry
1 Like
Answer
A is true but R is false.
Explanation— The presence of chloride ion can be tested by adding concentrated sulphuric acid. It is observed that the colourless HCl gas of pungent odour is evolved. Hence, the assertion (A) is true.
The colourless gas evolved in the above reaction is HCl. Hence, the reason (R) is false.
Answered By
1 Like
Related Questions
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.
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): If barium nitrate solution is added to sodium sulphate solution, a white precipitate is formed.
Reason (R): Sodium sulphate solution is white in colour.
- 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.
Match the gases in column I to the identification of the gases mentioned in column II
Column I Column II (a) Hydrogen sulphide A. Turns acidified potassium dichromate solution green (b) Nitric oxide B. Turns lime water milky (c) Carbon dioxide C. Turns reddish brown when it reacts with oxygen (d) Sulphur dioxide D. Turns moist lead acetate paper silvery black