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Which of the following statements is/are...

Which of the following statements is/are correct ?

A

When a Lassaigne's solution is heated with dil. `HNO_(3)`, cooled and `AgNO_(3)` solution is added, a `NH_(4)OH`, indicates the presence of iodine in organic compound.

B

When `(CH_(3)COO)_(4)` pb solution is added to the acidified Lassaigne's extract of an organic compound, a black precipitate of PbS is formed.

C

An organic compound containing N, on heating with conc. `H_(2)SO_(4)` gives `(NH_(4))_(2)SO_(4)` which liberates `NH_(3)` on treatment with excess of NaOH.

D

The molecular mass of non - volatile organic compound is determined either by Dumas method or by Vector Meyer's method.

Text Solution

Verified by Experts

The correct Answer is:
B, C
It is called empirical formula.
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