Question

Sodium carbonate extract of a salt containing sulphide ions gives a violet colour with appropriate reagent. The reagent sodium nitroprusside gives violet colour due to the formation of sodium thionitroprusside.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• C. Assertion is true but Reason is false
• D. Both Assertion and Reason are false

Answer 1

Answer: (A)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Answer 2

$Na _{2} S + Na _{2}\left[ Fe ( NO )( CN )_{5}\right] \longrightarrow \underset{\text{violet}}{Na _{4}\left[ Fe ( NOS )( CN )_{5}\right]}$