Organic reactions and their mechanism(MCQ- ADVANCE LEVEL)

Dear Readers,

Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. Which is an electrophile

  •  BCl3
  •  CH3OH
  •  NH3
  •  AlCl4-

Q2. The electrophile in the nitration of benzene is

  •  NO2+
  •  NO2
  •  NO+
  •  NO2-

Q3. The following compound will undergo electrophilic substitution more readily than benzene

  •  Nitrobenzene
  •  Benzoic acid
  •  Benzaldehyde
  •  Phenol

Q4. Which represents nucleophilic aromatic substitution reaction

  •  Reaction of benzene with Cl2 in sunlight
  •  Benzyl bromide hydrolysis
  •  Reaction of NaOH with dinitrofluorobenzene
  •  Sulphonation of benzene

Q5. Which is an electrophile

  •  AlCl3
  •  CN-
  •  NH3
  •  CH3OH

Q6. Strongest nucleophile is

  •  RNH2
  •  ROH
  •  C6H5O-
  •  CH3O-

Q7. Elimination of bromine from 2-bromobutane results in the formation of

  •  Equimolar mixture of 1 and 2-butene
  •  Predominantly 2-butene
  •  Predominantly 1-butene
  •  Predominantly 2-butyne

Q8. Examine the following statements pertaining to an SN2 reaction
(1) The rate of reaction is independent of the concentration of the nucleophile
(2) The nucleophile attacks the atom on the side of the molecule opposite to the group being displaced
(3) The reaction proceeds with simultaneous bond formation and bond rupture/cleavage
Amongst the following which of the above were true

  •  1, 2
  •  1, 3
  •  1, 2, 3
  •  2, 3

Q9. What is the decreasing order of reactivity amongst the following compounds towards aromatic electrophilic substitution
I. Chlorobenzene
II. Benzene
III. Anilinium chloride
IV. Toluene

  •  I > II > III > IV
  •  IV > II > I > III
  •  II > I > III > IV
  •  III > I > II > IV

Q10. Bromination of alkanes involves

  •  Carbanions
  •  Carbocations
  •  Carbenes
  •  Free radicals

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Best IIT JEE Coaching Institute in Delhi | NEET Coaching Institute in Delhi: Organic reactions and their mechanism(MCQ- ADVANCE LEVEL)
Organic reactions and their mechanism(MCQ- ADVANCE LEVEL)
Best IIT JEE Coaching Institute in Delhi | NEET Coaching Institute in Delhi
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