Integer Answer Type Questions: Organic Chemistry - Some Basic Principles & Technique | JEE Advanced | 35 Years Chapter wise Previous Year Solved Papers for JEE PDF Download

Q.1. The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula C₅H₁₀ is

Ans. 7

Solution. The seven possible cyclic structural and stereoisomers are

Q. 2. The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C₄H₆ is 5.

Ans. 5

Solution. The number of cyclic isomers for a hydr ocarbon with molecular formula C₄H₆ is 5.

The structures are

Q. 3. The maximum number of isomers (including stereoisomers) that are possible on monochlorination of the following compound is

Ans. 8

Solution.

   Enantiomeric pair = 2
        Two enantiomeric pairs = 4
      = 1
     = 1 

Total = 2 + 4 + 1 + 1 = 8

Q. 4. The total number of contributing structures showing hyperconjugation (involving C-H bonds) for the following carbocation is

Ans. 6

Solution.

a = 3 Hyperconjugative H's
b = 2 Hyperconjugative H's
c = 1 Hyperconjugative H

Q. 5. The total number(s) of stable conformers with non-zero dipole moment for the following compound is (are)

Ans. 3

Solution. 

Following three conformers (with μ ≠ 0) are possible

Q. 6. The total number of stereoisomers that can exist for M is

Ans. 2

Solution. The molecule cannot show geometrical isomerism, so only its mirror image will be the other stereoisomer.