Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne's extract. For preparing Lassaigen's extract, a small quanty of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne's extract or sdodium fusion extract.
In the process of testing elements in Lassaigne's a test, which of the following reactions do not occur.

Options

A. `Na+2H_(2)O rarr 2NaOH+H_(2)`
B. `2Na+H_(2)+O_(2)rarr2NaOH`
C. `Na+C+N rarr NaCN`
D. `2Na+S rarr Na_(2)S`

Answer

B

Explanation

In Lassaigne.s test `2Na+H_(2)+O_(2)to 2NaOH` does not occur since `H_(2)` and `O_(2)` gases are not liberated in the process.