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NEET Exam  >  NEET Test  >  Chemistry Class 12  >  Test: Cannizzaro Reaction - NEET MCQ

Cannizzaro Reaction - NEET Chemistry Class 12 Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: Cannizzaro Reaction (23 Questions)

You can prepare effectively for NEET Chemistry Class 12 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Cannizzaro Reaction". These 23 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 35 minutes
  • - Number of Questions: 23

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Cannizzaro Reaction - Question 1
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Only One Option Correct Type

Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

The major organic product in the following reaction is

Detailed Solution: Question 1

Test: Cannizzaro Reaction - Question 2
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Consider the following reaction,

Detailed Solution: Question 2

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Test: Cannizzaro Reaction - Question 3
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Which is the best hydride (H-) donor in the key step of Cannizaro reaction? 

Detailed Solution: Question 3

Dianion is better hydride donor. Also the electron donating group (CH3O) increases hydride (H-) donating a bility .

Test: Cannizzaro Reaction - Question 4
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Consider the following reaction,

Q.

The major organic product is

Detailed Solution: Question 4

It is a simple Tischenko reaction

Test: Cannizzaro Reaction - Question 5
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What is the major organic product in the following reaction?

Detailed Solution: Question 5


Test: Cannizzaro Reaction - Question 6
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Predict the major organic product in the following reaction.

Detailed Solution: Question 6

Intramolecular Cannizaro reaction occur.

Test: Cannizzaro Reaction - Question 7
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Whta is the major organic product formed in the follwing reaction ?

Detailed Solution: Question 7


Test: Cannizzaro Reaction - Question 8
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For a Cannizaro reaction,


Rate law is derived as : Rate = k [RCHO]2 [HO-]2
From the above rate law, it can be concluded that

Detailed Solution: Question 8

For formation of dianion hydride donor, an additional mole of NaOH is consumed

Hence, rate becomes 2nd order with respect to HO- and fourth order overall.

Test: Cannizzaro Reaction - Question 9
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Consider the following reaction,


Q. 

How the product Z can be prepared selectively using X and Y and other reagents?

Detailed Solution: Question 9

Test: Cannizzaro Reaction - Question 10
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What is the major product formed in the following intramolecular Cannizaro reaction?

Detailed Solution: Question 10

—CHO para to electron withdrawing —NO2 group is better hydride (H-) acceptor.

*Multiple options can be correct
Test: Cannizzaro Reaction - Question 11
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One or More than One Options Correct Type

Direction (Q. Nos. 11-15) This section contains 5 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 cross Cannizaro reaction given below

Q.

The expected product(s) is/are 

Detailed Solution: Question 11


(I) is formed by nucleophilic attack in the first step. (I) may undergo intramolecular hydride transfer giving option (a) or may undergo intermolecuiar hydride transfer to C6H5CHO giving option (c) and option (d).

*Multiple options can be correct
Test: Cannizzaro Reaction - Question 12
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In the Cannizaro reaction mentioned below

Q. 

The possible product(s) is/ar

Detailed Solution: Question 12


*Multiple options can be correct
Test: Cannizzaro Reaction - Question 13
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What is/are the expected organic product(s) in the following reaction?

Detailed Solution: Question 13

It is a case of cross Cannizaro reaction in which formaldehyde is always oxidised and the other aldehyde is reduced. So, correct option B and D.

*Multiple options can be correct
Test: Cannizzaro Reaction - Question 14
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Consider the following reaction,

Q. 

The expected organic product(s) is/are

Detailed Solution: Question 14

It is a case of cross Tischenko reaction.

Here, both can be oxidised or both can be reduced. In the next step ester formation occur by all possible combination of acid and alcohols.

*Multiple options can be correct
Test: Cannizzaro Reaction - Question 15
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Consider the following reaction sequence,

Q. 

The expected organic product(s) is/are 

Detailed Solution: Question 15


Test: Cannizzaro Reaction - Question 16
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Comprehension Type

Direction (Q. Nos. 16-18) 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 mong the four given options (a), (b), (c) and (d).

Passage

When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism is

Step II



Q.

 What is the rate law derived from the above mechanism?

Detailed Solution: Question 16


The intermediate “I” can be determined as 
Substituting [I] in Eq (i) gives
R = k1 K [ACHO]2 [HO-] = k [ACHO]2 [OH-']

Test: Cannizzaro Reaction - Question 17
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When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism is

Step II



Q. 

Which of the following observed fact establishes the correctness of the above mechanism?

Detailed Solution: Question 17

When reaction is carried out in D,O , no C—D bond formation occur. It establishes the correctness of above mechanism that reaction proceed by H- (hydride) transfer in the slow rate determining step.

Test: Cannizzaro Reaction - Question 18
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When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism is

Step II



Q. 

In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates that

Detailed Solution: Question 18

Formation of dianion involves two moles of HO- per mole of aldehyde

Test: Cannizzaro Reaction - Question 19
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Matching List Type

Direction (Q. Nos. 19 and 20) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Consider the reactions of Column I and match with the products of Column II. Mark the correct option from the codes given below.

 

Detailed Solution: Question 19

(i)  is better H- acceptor, reduced to FCH2OH.
(ii) CH2O is oxidised and C6H5CHO is reduced in cross Cannizaro reaction.
(iii) Electron withdrawing —NO2 makes —CHO a better hydride acceptor, hence p-nitrobenzaldehyde is reduced and benzaldehyde is oxidised.
(iv) p-nitrobenzaldehyde is reduced, p-methoxy benzaldehyde becomes better hydride donor after attack by HO-, hence oxidised.

Test: Cannizzaro Reaction - Question 20
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Match the reactions of Column I with the type of reactions from Column II. Mark the correct option from the codes given below.

 

Detailed Solution: Question 20

(i) Initially, aldol reaction followed by Cannizaro reaction giving C(CH2OH)4 + HCOOH.
(ii) F—CHO undergo Cannizaro reaction due to absence of α -H.
(iii) It has difficulty in aldol condensation, hence undergo Cannizaro reaction predominantly.
(iv) All aldol, Cannizaro and Claisen reaction occur.

*Answer can only contain numeric values
Test: Cannizzaro Reaction - Question 21
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One Integer Value Correct Type

Direction (Q. Nos. 21-23) This section contains 3 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Consider the following Cannizaro reaction,

Q. 

How many different products are formed? 


Detailed Solution: Question 21

 Possible products are

*Answer can only contain numeric values
Test: Cannizzaro Reaction - Question 22
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Consider the following Cannizaro reaction,

Q. 

How many different products are expected in this reaction?


Detailed Solution: Question 22

Possible products are

*Answer can only contain numeric values
Test: Cannizzaro Reaction - Question 23
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Consider the following reaction,

Q. 

If CH3OH is formed exclusively by hydride transfer from a dianion intermediat     what is the overall order of reaction?


Detailed Solution: Question 23

If dianion is hydride donor, the rate law is
R = k [H2CO]2 [OH-]2
Hence, reaction is overall fourth order.

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About this NEET Practice Test

This test contains 23 MCQs on Cannizzaro Reaction with detailed solutions for each question. It is part of the Chemistry Class 12 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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