1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
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The compound that does not give positive test for nitrogen in Lassaigne's test is

A
WB JEE 2024 Chemistry - Practical Chemistry Question 1 English Option 1
B
WB JEE 2024 Chemistry - Practical Chemistry Question 1 English Option 2
C
WB JEE 2024 Chemistry - Practical Chemistry Question 1 English Option 3
D
WB JEE 2024 Chemistry - Practical Chemistry Question 1 English Option 4
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
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To a solution of a colourless efflorescent sodium salt, when dilute acid is added, a colourless gas is evolved along with formation of a white precipitate. Acidified dichromate solution turns green, when the colourless gas is passed through it. The sodium salt is
A
Na2SO3
B
Na2S
C
Na2S2O3
D
Na2S4O6
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