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Objective Questions
GS
GS Set-1
Chemistry
Organic Chemistry
54

Organic Chemistry MCQ with Answers

54) During dehydration of alcohols to alkenes by heating with conc. H₂SO₄, the initiation step is:

Protonation of alcohol molecule

Formation of carbocation

Elimination of water

Formation of an ester

Answer is:

Protonation of alcohol molecule

Organic Chemistry MCQ with Answers

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Related Organic Chemistry MCQ with Answers

55) Amongst the following, the most basic compound is:

Benzylamine

Aniline

Acetanilide

p−nitroaniline

Answer is:

Benzylamine

56) The concentration of an organic compound in chloroform is 6.15 gm per 100 mL of solution. A portion of this solution in a 5 cm polarimeter tube causes an observed rotation of −1.2^o. What is the specific rotation of the compound?

12^o

−3.9^o

−39^o

61.5^o

Answer is:

−39^o

57) Which of the following electrophilic substitutions is reversible?

Chlorination of benzene

Nitration of benzene

Sulphonation of benzene

Alkylation of benzene

Answer is:

Alkylation of benzene

58) Ozonolysis of mesitylene gives:

Glyoxal

Formaldehyde

2−oxo propanol

Ethanal

Answer is:

2−oxo propanol

Organic Chemistry MCQ with Answers

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