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Which of the following statements are co...

Which of the following statements are correct?

A

In Lassaigne's test for halogens, conc. `HNO_3` is used to remove HCN and `H_2S`

B

When an organic compound is heated with dry CuO and the gases evolved are passed through lime water, which turns milky, the gas may be `CO_2` or `SO_2`

C

In Carius method, sulphur is oxidised to `SO_4^(-2)` ion with fuming `HNO_3`

D

In Lassaigne's test, N present in the organic compound is converted into `CN^(Theta)` ions.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Heating cannot be used for this purpose as `SO_2` will be obtained in place of S.
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