which one is obtain by acetylation of morphin

1. charas
2. cocaine
3. smack
4. crack

Hello Student
Correct answer is 3. Smack
In the acetylation of morphine to yield heroin or diacetylmorphine the phenolic OH group on the 3- carbon is the forst to react to give as an intermediate, 3-O-monoacetylmorphine, ehich is further acetylated to heroin

It is commonly called broun sugar, being cheap considered poor man’s heroin.

The correct answer is (3) Smack.

Heroin (diacetylmorphine or morphine diacetate, also known as diamorphine and commonly known by its street names of H, smack, boy, horse, brown, black, tar, and others) is an opioid analgesic originally synthesized by adding two acetyl groups to the molecule morphine, which is found naturally in the opium poppy. It is the 3,6-diacetyl ester of morphine. Heroin itself is an inactive drug, but when inserted into the body, it converts into morphine.