Alcohol & Ether – JEE Main Previous Year Questions with Solutions

JEE Main Previous Year Papers Questions of Chemistry with Solutions are available at eSaral. Practicing JEE Mains chapter wise questions of Chemistry will help the JEE aspirants in realizing the question pattern as well as help in analyzing weak & strong areas.


Previous Years AIEEE/JEE Mains Questions

Q. The number of stereoisomers possible for a compound of the molecular formula

(1) 4        (2) 6         (3) 3           (4) 2


Sol. (1)

Q. A liquid was mixed with ethanol and a drop of concentrated $\mathrm{H}_{2} \mathrm{SO}_{4}$ was added. A compound with a fruity smell was formed. The liquid was :-

(1) $\mathrm{CH}_{3} \mathrm{COCH}_{3}$

(2) $\mathrm{CH}_{3} \mathrm{COOH}$

(3) $\mathrm{CH}_{3} \mathrm{OH}$

(4) HCHO


Sol. (2)

Q. From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous $\mathrm{ZnCl}_{2}$, is :-

(1) 1–Butanol

(2) 2–Butanol

(3) 2–Methylpropan–2–ol

(4) 2–Methylpropanol


Sol. (3)

Q. Consider the following reaction :

$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow$ Produce

Among the following, which one cannot be formed as a product under any conditions ?

(1) Ethyl-hydrogen sulphate

(2) Ethylene

(3) Acetylene

(3) Diethyl ethe


Sol. (3)

Q. Iodoform can be prepared from all except :-

(1) Isobutyl alcohol

(2) Ethyl methyl ketone

(3) Isopropyl alcohol

(4) 3-Methyl–2–butanone


Sol. (1)

Q. An unknown alcohol is treated with the “Lucas reagent’ to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism :-

(1) secondary alcoholby SN $^{1}$

(2) tertiary alcohol by SN $^{1}$

(3) secondary alcoholby SN $^{2}$

(4) tertiary alcohol by SN $^{2}$


Sol. (2)

Q. The most suitable reagent for the conversion of $\mathrm{R}-\mathrm{CH}_{2}-\mathrm{OH} \rightarrow \mathrm{R}-\mathrm{CHO}$ is :

(1) $\mathrm{CiO}_{3}$

(2) PCC (Pyridinium chlorochromate)

(3) KMNO $_{4}$

(4) $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$


Sol. (2)

Q. Allyl phenyl ether can be prepared by heating:

(1) $\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{Br}+\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{ONa}$

(2) $\mathrm{C}_{6} \mathrm{H}_{5}-\mathrm{CH}=\mathrm{CH}-\mathrm{Br}+\mathrm{CH}_{3}-\mathrm{ONa}$

(3) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Br}+\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{ONa}$

(4) $\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{Br}+\mathrm{C}_{6} \mathrm{H}_{5}-\mathrm{CH}_{2}-\mathrm{ONa}$


Sol. (1)

Q. In the Victor-Meyer’s test, the colour given by $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ alcohols are respectively :-

(1) Red, blue, colourless

(2) Colourless, red, blue

(3) Red, blue, violet

(4) Red, colourless, blue


Sol. (1)

Q. Williamson synthesis of ether is an example of

(1) Nucleophilic addition

(2) Electrophilic substitution

(3) Nucleophilic substitution

(4) Electrophilic addition


Sol. (3)

Nucleophilic substitution

Q. Phenol on treatment with $\mathrm{CO}_{2}$ in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with $\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O}$ in the presence of catalytic amount of $\mathrm{H}_{2} \mathrm{SO}_{4}$ produces :


Sol. (4)

Q. Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with $\mathrm{Br}_{2}$ to form product B. A and B are respectively :


Sol. (2)


Leave a comment

Please enter comment.
Please enter your name.

  • June 7, 2020 at 12:37 pm

    Very helpful

  • May 10, 2020 at 10:30 am

    Extraordinary questions….

  • March 18, 2020 at 8:58 pm

    Useful for me