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Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Chemistry MCQ


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10 Questions MCQ Test Organic Chemistry - Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation for Chemistry 2024 is part of Organic Chemistry preparation. The Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation below.
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Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 1

Which of the following act as catalysis in the nitration of benzene?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 1

Conc. H2SO4 act as a catalysis in the nitration of benzene. Benzene is treated with a mixture of concentrated nitric acid and concentrated sulphuric acid at a temperature not exceeding 50°C.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 2

Which of the following is the necessary condition for desulphonation?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 2

The necessary condition for desulphonation is to Use dilute acid, high concentration of water and remove volatile hydrocarbon by steam distillation.

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Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 3

Aromatic bromination catalyzed by the Lewis acid thalium acetate gives ___________

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 3

Aromatic bromination catalyzed by the Lewis acid thalium acetate gives only para isomer. It is not Ortho and meta directing.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 4

Which of the following is not a product of the reaction of benzene with CH3Cl and AlCl3?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 4

p-xylene is not a product of reaction of benzene with CH3Cl and AlCl3. Toulene, isopropyl benzene and O-xylene are the products of such reaction.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 5

How will you convert benzene into n-propyl benzene?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 5

Friedel-Crafts Acylation followed by clemmensen reduction of ketone will give n-propyl benzene. Clemmensen reduction is a chemical reaction described as a reduction of ketones (or aldehydes) to alkanes using zinc amalgam and hydrochloric acid.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 6

Which of the following is rate determining step in electrophilic substitution reaction?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 6

Attack by an electrophilic reagent on benzene ring is a rate determining step in electrophilic substitution reaction. It is also the slowest step of the reaction.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 7

Fuming sulphuric acid is the solution of _________% SO3 in conc. H2SO4.

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 7

Fuming sulphuric acid is the solution of 7% SO3 in conc. H2SO4. It is also called Oleum which is produced in the contact process, where sulphur is oxidized to sulphur trioxide which is subsequently dissolved in concentrated sulphuric acid.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 8

Which of the following act as electrophile in halogenation?

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 8

Halonium ion act as electrophile in halogenation. Nitronium ion is used in nitration. Sulphonium ion is used in sulphonation. Acylium ion is used in acylation.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 9

The reaction in which benzene reacts with alkyl halide in the presence of a lewis acid as a catalyst to produce alkylbenzene is known as ___________

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 9

The reaction in which benzene reacts with alkyl halide in the presence of a lewis acid as a catalyst to produce alkylbenzene is known as Friedel-Crafts Alkylation. With anhydrous ferric chloride as a catalyst, the alkyl group attaches at the former site of the chloride ion.

Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 10

The product of Friedel-Crafts Acylation reactions are ___________

Detailed Solution for Test: Benzene Electrophilic Substitution: Sulfonation, Nitration & Halogenation - Question 10

The product of Friedel-Crafts Acylation reactions are Arylketone. The acylated products may easily be converted to the corresponding alkanes via Clemmensen Reduction or Wolff-Kishner Reduction.

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