Reaction Intermediates Test-1 | CSIR NET & GATE Test Series | ChemContent

CSIR NET & GATE Chemistry
Test Series
Reaction Intermediates
Test-1

This page contains MCQ Questions of latest CSIR NET, GATE and other competitive exams on the topic of Reaction Intermediates in Organic Chemistry. Reaction intermediates such as Carbocation, Carbanion, Carbene, Radical, ketene, nitrene etc. are the species which are formed in between the reactions. Their relative stabilities dictate how the reaction will further proceed. This is a really important chapter in organic chemistry for competitive exams perspective. Try these 20 MCQ Questions given on this page to check your knowledge of this chapter. These are the questions which have been asked in exams of recent three to four years. You can also attempt these questions as quizzes by clicking on the below link.

Attempt as QUIZ

Q1. The major product of the following reaction is:

Q2. The rate of the reaction is slowest when

a) X = F, Y = NO₂
b) X = I, Y = NO₂
c) X = F, Y = -COCH₃
d) X = I, Y = -COCH₃

Q3. The product P is a

a) geminal diol
b) vicinal diol
c) α, β- unsaturated ketone
d) epoxide

Q4. The products P&Q are

Q5. The major product of the following reaction is:

Q6. The reactant P in the below reaction is:

Q7. The final products B and C formed in the reaction are

Q8. The intermediate and the final product in the following reaction is:

Q9. The correct statement among the following is:
a) singlet carbenes show stereoselective reactions
b) triplet carbenes show stereospecific reactions
c) singlet carbenes can act as electrophiles
d) triplet carbenes can act as nucleophiles

Q10. The major product of the following reaction is:

Q11. Which of the following intermediates are known to exist?

Q12. The product P formed in the below reaction is

Q13. The major product formed in the following reaction is:

Q14. How many rearrangements among the following from isocyanate?
(i) Curtius
(ii) Lossen
(iii) Hoffmann
(iv) Schmidt
(v) Beckmann
(vi) Wolff rearrangement
a) 5
b) 4
c) 3
d) 2

Q15. The major product formed in the below reaction is

Q16. The intermediate and major product formed in the below reaction are

Q17. Mark the major product formed in the below reaction

Q18. The increasing order of rate of solvolysis:

a) I > II > III
b) II > III > I
c) III > II > I
d) III > I > II

Q19. Match the following with their corresponding pKa values:

a) A-Q, B-P, C-R
b) A-R, B-Q, C-P
c) A-Q, B-R, C-P
d) A-R, B-P, C-Q

Q20. The total no. of products formed and the relation between k₁ and k₂ in the following reactions are

a) 2, k₁ > k₂
b) 3, k₁ > k₂
c) 2, k₁ < k₂
d) 3, k₂ > k₁

Ans Key

1b 2d 3b 4d 5a
6b 7c 8c 9c 10c
11c 12b 13b 14b 15b
16d 17d 18c 19d 20b

Solution PDF

Also See

Chapterwise Test Series
CSIR NET & GATE Mock Tests
Topic wise MCQs
Chapter wise MCQs