Doubt: R-MgX + R'-OH ==== R-R' So, option 3 should be correct answer. [https://learner-users.s3.ap-south-1.amazonaws.com/1552506819092] Chapter: Hydrocarbons - Subject: Chemistry - Course: NEET Chemistry Course

R-MgX + R'-OH ==== R-R'

So, option 3 should be correct answer.

Zerewitinoff Method -

Reaction of alcohol with grignard reagent.

- wherein

$R'OH+RMgX\rightarrow RH+R'OMgX$

$C_{6}H_{5}MgBr+CH_{3}OH\rightarrow C_{6}H_{6}+Mg\left ( OCH_{3} \right )Br$

Reaction of Grignard reagent with Alcohol -

Alkane is obtained.

- wherein

$P{h}M{g}B{r}+CH_{3}OH\rightarrow P{h}-H+M{g}\left ( OM{e} \right )B{r}$

Ph- stands for phenyl group

hence option (a) is correct