www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
GS
GS Set-1
Chemistry
Organic Chemistry
72

Organic Chemistry MCQ with Answers

72) Which one of the following conformations of cyclohexane is chiral?

Boat

Twist boat

Rigid

Chair

Answer is:

Twist boat

Explanation:

Chiral conformation will not have a plane of symmetry.

Organic Chemistry MCQ with Answers

For more MCQ's Click Here

Related Organic Chemistry MCQ with Answers

73) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains:

Mixture of o− and p−dibromobenzene

Mixture of o− and p−bromotoluene

Mixture of o− and p−bromoaniline

Mixture of o− and m−bromotoluene

Answer is:

Mixture of o− and p−bromotoluene

74) Mesodibromobutane on debromination gives:

trans−2−butene

cis−2−butene

1−butene

1−butyne

Answer is:

cis−2−butene

75) Octane number can be changed by:

Isomerization

Alkylation

Cyclisation

All of these

Answer is:

All of these

Explanation:

Octane number can be changed by
* Isomerization
* Alkylation
* Cyclisation

76) A fuel has the same knocking property as a mixture of 70% isooctane (2,2,4−trimethylpentane) and 30% n−heptane by volume. The octane number of the fuel is:

100

70

30

40

Answer is:

70

Organic Chemistry MCQ with Answers

For more MCQ's Click Here