Which of the following statements is/are wrong ?

Options

A. Beilstein test is a reliable test for halogens in organics compounds.
B. In Lassaigne's test for N, Prussian blue colour is due to the formation of ferro - ferri cyanide.
C. `FeCl_(3)` solution is added to the Lassaigne's extract to detect the presence of both N and S
D. Molecular mass of an acid = Equivalent mass X acidity.

Answer

A, B, C, D

Explanation

(a) Indicates the presence of Br.
(b) Victor Meyer.s method is used to determine molecular mass of volatile organic compound. Dumas method is used to dertermine percentage of N. The molecular mass of non - volatile compound is determined by depression in freezing point or by elevation in boiling point method.