Test: E1 Reactions & Related Reactions

Question 1

Only One Option Correct Type

Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q.

The incorrect statement concerning E1 reaction is

Accepted Answer

reaction proceeds via a single transition state

Answer

polar protic solvent increases reactivit

Answer

lewis acid catalyses reaction

Answer

reaction proceeds via carbocation intermediates

Question 2

The correct statement regarding a unimolecular elimination reaction is

Accepted Answer

Rearrangement of carbon skeleton may occur during elimination reaction

Answer

Reaction is stereospecific

Answer

If ¹⁴C replaces α-carbon of substrate, reactivity remains unaltered

Answer

In the given condition of E1 reaction, no substitution reaction takes place

Question 3

Consider the following reaction,

Q.

The correct statement concerning I and II is

Accepted Answer

I is major product as it is more stable than II

Answer

I is the major product as it is formed at faster rate than II

Answer

II is the major product as it is formed at faster rate than I

Answer

I and II are formed in comparable amounts

Question 4

Consider the following elimination reaction,

When reaction is carried out with C₂H₅ONain ethanol, 2-menthene is the major product while 3-menthene is the major product if reaction is substrate is heated in ethanol only. It is due to

Accepted Answer

with strong base, reaction proceeds by E2 mechanism while with weak base, E1 reaction takes place.

Answer

with strong base, less substituted alkene is always the major product.

Answer

methyl group gives steric hindrance to strong base in E2 reaction.

Answer

isopropyl group gives steric hindrance to strong base in E2 reaction.

Question 5

The reaction of tertiary butyl chloride in water to yield tertiary butyl alcohol is not appreciably affected by dissolved NaF; in DMSO, however, NaF bring about rapid formation of isobutene. It is because of

Accepted Answer

E₂ reaction is preferred over S_N1 in DMSO

Answer

in DMSO, reaction predominates over S_N1

Answer

E2 reaction is preferred over S_N2 in DMSO

Answer

fluoride ion is not solvated by DMSO

Question 6

When (CH₃)₃C — Cl is heated in ethanol, both alkene and ether are formed simultaneously by E1 and S_N1 reaction. Which of the following will have adverse effect on both of the above reaction?

Accepted Answer

Presence of some NaCI

Answer

Presence of Lewis acid

Answer

Presence of some water in ethanol

Answer

Presence of some CHCI₃

Question 7

Consider the following reaction,

Q.

Increasing temperature increases the proportion of elimination (E1) product because

Accepted Answer

E1 product is entropy favoured

Answer

E1 product is enthalpy favoured

Answer

S_N1 product is entropy favoured

Answer

S_N1 product is enthalpy favoured

Question 8

Which is the least reactive halide in both E₁ and S_N1 reaction?

Accepted Answer

Answer

Answer

Answer

Question 9

Direction (Q. Nos. 9-11) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Consider the following reaction,

Accepted Answer

Question 10

Consider the following elimination reaction,

Accepted Answer

Question 11

The correct statement regarding an E1 reaction is/are ?

Accepted Answer

Question 12

Comprehension Type

Direction (Q. Nos. 12-14) This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.

Q.

The correct statement concerning above elimination reaction is

Accepted Answer

when tertiary butyl group is cis, reaction occurs rapidly and hydrogen is lost from β-carbon

Answer

when tertiary butyl group is trans, reaction occurs rapidly and deuterium is lost from β-carbon

Answer

when tertiary butyl group is trans, reaction occurs rapidly and hydrogen is lost from β-carbon

Answer

when tertiary butyl group is cis, reaction occurs rapidly and deuterium is lost from β-carbon

Question 13

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.

Q.

When tertiary butyl group and tosylate group are trans, the correct statement is

Accepted Answer

reaction occurs slowly and both hydrogen and deuterium are lost from β-carbon

Answer

reaction occurs slowly and hydrogen is lost from β-carbon

Answer

reaction occurs rapidly and hydrogen is lost from β-carbon

Answer

reaction occurs rapidly and deuterium is lost from β-carbon

Question 14

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.

Q.

If the rate of reaction is independent of NaOEt concentration, it is concluded that

Accepted Answer

tertiary butyl group is trans to tosylate

Answer

tertiary butyl group is cis to tosylate

Answer

substitution reaction occur predominantly

Answer

NaOEt is in large excess

Question 15

One Integer Value Correct Type

Direction (Q. Nos. 15 and 16) This section contains 2 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Consider the following reaction,

Q.

In principle, how many different alkenes are possible by the above elim ination reaction?

Accepted Answer

E1 Reactions & Related - Free MCQ Practice Test with solutions, NEET NCERT

MCQ Practice Test & Solutions: Test: E1 Reactions & Related Reactions (15 Questions)

Only One Option Correct Type
Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.
Q.
The incorrect statement concerning E1 reaction is

The correct statement regarding a unimolecular elimination reaction is

Consider the following reaction,

Q.
The correct statement concerning I and II is

Consider the following elimination reaction,
When reaction is carried out with C₂H₅ONain ethanol, 2-menthene is the major product while 3-menthene is the major product if reaction is substrate is heated in ethanol only. It is due to

The reaction of tertiary butyl chloride in water to yield tertiary butyl alcohol is not appreciably affected by dissolved NaF; in DMSO, however, NaF bring about rapid formation of isobutene. It is because of

When (CH₃)₃C — Cl is heated in ethanol, both alkene and ether are formed simultaneously by E1 and S_N1 reaction. Which of the following will have adverse effect on both of the above reaction?

Consider the following reaction,

Q.
Increasing temperature increases the proportion of elimination (E1) product because

Which is the least reactive halide in both E₁ and S_N1 reaction?

Direction (Q. Nos. 9-11) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
Consider the following reaction,

Consider the following elimination reaction,

The correct statement regarding an E1 reaction is/are ?

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.
Q.
When tertiary butyl group and tosylate group are trans, the correct statement is

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.
Q.
If the rate of reaction is independent of NaOEt concentration, it is concluded that

One Integer Value Correct Type
Direction (Q. Nos. 15 and 16) This section contains 2 questions. When worked out will result in an integer from 0 to 9 (both inclusive).
Consider the following reaction,
Q.
In principle, how many different alkenes are possible by the above elim ination reaction?

NCERT Based Tests for NEET

NCERT Based Tests for NEET

Top Courses for NEET

About this NEET Practice Test

Explore more NEET Study Resources

E1 Reactions & Related - Free MCQ Practice Test with solutions, NEET NCERT

MCQ Practice Test & Solutions: Test: E1 Reactions & Related Reactions (15 Questions)

Only One Option Correct TypeDirection (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q. The incorrect statement concerning E1 reaction is

The correct statement regarding a unimolecular elimination reaction is

Consider the following reaction, Q. The correct statement concerning I and II is

Consider the following elimination reaction,When reaction is carried out with C2H5ONain ethanol, 2-menthene is the major product while 3-menthene is the major product if reaction is substrate is heated in ethanol only. It is due to

The reaction of tertiary butyl chloride in water to yield tertiary butyl alcohol is not appreciably affected by dissolved NaF; in DMSO, however, NaF bring about rapid formation of isobutene. It is because of

When (CH3)3C — Cl is heated in ethanol, both alkene and ether are formed simultaneously by E1 and SN1 reaction. Which of the following will have adverse effect on both of the above reaction?

Consider the following reaction, Q. Increasing temperature increases the proportion of elimination (E1) product because

Which is the least reactive halide in both E1 and SN1 reaction?

Direction (Q. Nos. 9-11) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.Consider the following reaction,

Consider the following elimination reaction,

The correct statement regarding an E1 reaction is/are ?

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.Q. When tertiary butyl group and tosylate group are trans, the correct statement is

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.Q. If the rate of reaction is independent of NaOEt concentration, it is concluded that

One Integer Value Correct TypeDirection (Q. Nos. 15 and 16) This section contains 2 questions. When worked out will result in an integer from 0 to 9 (both inclusive).Consider the following reaction,Q. In principle, how many different alkenes are possible by the above elim ination reaction?

NCERT Based Tests for NEET

NCERT Based Tests for NEET

Top Courses for NEET

About this NEET Practice Test

Explore more NEET Study Resources

Only One Option Correct Type
Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.
Q.
The incorrect statement concerning E1 reaction is

Consider the following reaction,

Q.
The correct statement concerning I and II is

Consider the following elimination reaction,
When reaction is carried out with C₂H₅ONain ethanol, 2-menthene is the major product while 3-menthene is the major product if reaction is substrate is heated in ethanol only. It is due to

When (CH₃)₃C — Cl is heated in ethanol, both alkene and ether are formed simultaneously by E1 and S_N1 reaction. Which of the following will have adverse effect on both of the above reaction?

Consider the following reaction,

Q.
Increasing temperature increases the proportion of elimination (E1) product because

Which is the least reactive halide in both E₁ and S_N1 reaction?

Direction (Q. Nos. 9-11) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
Consider the following reaction,

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.
Q.
When tertiary butyl group and tosylate group are trans, the correct statement is

Consider the following reaction. The tertiary butyl group can be cis or trans to tosylate group. Answer the following questions based on the knowledge of E2 and E1 reaction mechanism.
Q.
If the rate of reaction is independent of NaOEt concentration, it is concluded that

One Integer Value Correct Type
Direction (Q. Nos. 15 and 16) This section contains 2 questions. When worked out will result in an integer from 0 to 9 (both inclusive).
Consider the following reaction,
Q.
In principle, how many different alkenes are possible by the above elim ination reaction?