Q.
Among the following, the total number of compounds which give positive Lassaigne's test for nitrogen is/are_______.
i
$NH _{2} OH$
ii
$H _{2} N - NH _{2}$
iii
$H _{2} N - CO - NH _{2}$
iv
$NH _{2}- C _{6} H _{5}- COOH$
v
$NH _{2}- CS - NH _{2}$
vi
$NH _{2}- C _{6} H _{4}- SO _{3} H$
| i | $NH _{2} OH$ |
| ii | $H _{2} N - NH _{2}$ |
| iii | $H _{2} N - CO - NH _{2}$ |
| iv | $NH _{2}- C _{6} H _{5}- COOH$ |
| v | $NH _{2}- CS - NH _{2}$ |
| vi | $NH _{2}- C _{6} H _{4}- SO _{3} H$ |
Organic Chemistry – Some Basic Principles and Techniques
Solution: