Given below are two statements :
Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds.
Statement II : The sodium fusion extract of an organic compound having N and S gives prussian blue colour with and
In the light of the above statements, choose the correct answer from the options given below
Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds.
Statement II : The sodium fusion extract of an organic compound having N and S gives prussian blue colour with and
In the light of the above statements, choose the correct answer from the options given below
- (A)Both Statement I and Statement II are true
- (B)Both Statement I and Statement II are false
- (C)Statement I is false but Statement II is true
- (D)Statement I is true but Statement II is false✓ Correct
Answer: (D)
Solution
In Lassaigne's test, fusing the organic compound with sodium metal converts covalently bound nitrogen, sulphur and halogens into ionic sodium salts (, , ) that dissolve in water — Statement I is correct.
When a compound contains both nitrogen and sulphur, the two combine during fusion to give sodium thiocyanate, , instead of free cyanide. Adding to this extract gives the blood-red colour of ferric thiocyanate, not the Prussian blue of — Statement II is incorrect.
Statement I is true, Statement II is false.
When a compound contains both nitrogen and sulphur, the two combine during fusion to give sodium thiocyanate, , instead of free cyanide. Adding to this extract gives the blood-red colour of ferric thiocyanate, not the Prussian blue of — Statement II is incorrect.
Statement I is true, Statement II is false.
JEE Main · 2025 · 23 Jan 2025 · Shift 1 · Single correct option