Structural Isomerism – JEE Main Previous Year Questions with Solutions
JEE Main Previous Year Papers Questions of Chemistry With Solutions are available at eSaral.   Simulator Previous Years AIEEE/JEE Mains Questions
Q. The alkene that exhibits geometrical isomerism is :- (1) 2–butene (2) 2–methyl–2–butene (3) Propene (4) 2–methyl propene [AIEEE-2009]

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Sol. (1)

Q. The number of stereoisomers possible for a compound of the molecular formula CH3–CH=CH–CH(OH)–Me is :- (1) 4             (2) 6              (3) 3             (4) 2 [AIEEE-2009]

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Sol. (1) exhibits both geometrical as well as optical isomerism. Cis – R Trans – R Cis – S Trans – S

Q. Out of the following, the alkene that exhibits optical isomerism is : (1) 2-methyl-2-pentene (2) 3-methyl-2-pentene (3) 4-methyl-1-pentene (4) 3-methyl-1-pentene [AIEEE-2010]

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Sol. (4)

Q. Identify the compound that exhibits tautomerism :- (1) 2-Pentanone (2) Phenol (3) 2-Butene (4) Lactic acid [AIEEE-2011]

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Sol. (1)

Q. The IUPAC name of the following compounds is : (1) (Z) – 5 – hepten – 3 – yne (2) (Z) – 2 – hepten – 4 – yne (3) (E) – 5 – hepten – 3 – yne (4) (E) – 2 – hepten – 4 – yne [JEE-Main-2012]

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Sol. (4)

Q. Dipole moment is shown by :- (1) trans-2, 3-dichloro- 2-butene (2) 1, 2-dichlorobenzene (3) 1, 4-dichlorobenzene (4) trans-1, 2-dinitroethene [JEE-Main 2012]

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Sol. (2)

Q. Maleic acid and fumaric acids are :- (1) Tautomers (2) Chain isomers (5) Geometrical isomers (4) Functional isomers [JEE-Main 2012]

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Sol. (3)

Q. Monocarboxylic acids are functional isomers of : (1) Esters (2) Amines (3) Ethers (4) Alcohols [JEE-Main 2013]

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Sol. (1) Monocarboxylic acid and Esters $(-\mathrm{COO}-)$ has same general $(-\mathrm{COOH}) .$ Formula $\left[\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}} \mathrm{O}_{2}\right]$ but different FG, so are called functional group isomer.

Q. Arrange in the correct order of stability (decreasing order) for the following molecules: [JEE-Main 2013]

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Sol. (3)

Q. For which of the following molecule significant $\mu \neq 0$ [JEE-Main 2014]

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Sol. (2) Due to presence of $\ell . \mathrm{p}_{(\mathrm{s})}$ on oxygen and sulphur atom which are out of plane hence

 
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Comments
  • June 11, 2021 at 7:00 pm

    Questions are well but answers for the questions also provided then it is very easy to correction and checking

    26
    • August 26, 2021 at 9:14 pm

      Answers are provided below

      1
  • February 8, 2021 at 9:34 pm

    Dang..These questions don’t even require pen.
    Guys try out advanced pyqs of isomerism..It’s literally worth it..

    21
  • February 3, 2021 at 11:12 pm

    Please show the solution for the questions

    6
  • November 9, 2020 at 11:10 am

    ANS OF QUESTION 9
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    1
  • September 1, 2020 at 6:08 pm

    please give scheme to download it

    0
  • August 29, 2020 at 10:52 am

    very nice questions

    0
  • August 23, 2020 at 9:45 am

    tha best

    1
  • June 26, 2020 at 12:02 pm

    It’s good

    0
  • June 18, 2020 at 7:48 am

    I m in class 9 but still I can solve alll of the above questions

    0
  • May 16, 2020 at 4:28 pm

    some what good but very less questions for online very basic but really good to increases your confidence soo

    0
  • April 23, 2020 at 12:32 pm

    Very less questions available here for doing online questions

    0
  • April 11, 2020 at 1:01 am

    Good way to practice but do increase the level a bit … It is not comparable to jee main difficulty …

    0
  • April 9, 2020 at 7:01 pm

    good ; useful but it’s somewhat low level

    0
    • August 4, 2021 at 11:07 pm

      Exilent for clear a basic of isomerism question ✌💯🥳

      0
  • April 9, 2020 at 7:01 pm

    good ;useful but it’s somewhat low level

    0
    • February 9, 2021 at 1:46 pm

      low level bsdk? ab agar tu air 1 nai laya to dekh

      8
  • December 28, 2019 at 4:03 pm

    This type of experience (combination of all papers in one topic)is very useful to preparation of jee.
    Thanks for giving this type of experience.

    1