General Organic Chemistry & Isomerism · JEE Main previous year questions

2023 31 questions

1. Q652023 · 25 Jan 2023 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

2. Q702023 · 25 Jan 2023 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: A

3. Q662023 · 25 Jan 2023 · Shift 2

   The isomeric deuterated bromide with molecular formula ${\mathrm{C}}_4{\mathrm{H}}_8\mathrm{DBr}$ having two chiral carbon atoms is

   1. A.2 - Bromo - 1 - deuterobutane
   2. B.2 - Bromo - 1 - deutero - 2 - methylpropane
   3. C.2 - Bromo - 3 - deuterobutane
   4. D.2 - Bromo - 2 - deuterobutane
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   Answer: C

4. Q732023 · 24 Jan 2023 · Shift 1
   
   1. A.D, C, B, A
   2. B.C, D, B, A
   3. C.C, A, B, D
   4. D.D, C, A, B
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   Answer: C

5. Q792023 · 24 Jan 2023 · Shift 1

   Given below are two statements: Statement I : Noradrenaline is a neurotransmitter. Statement II : Low level of noradrenaline is not the cause of depression in human. In the light of the above statements, choose the correct answer from the options given below

   1. A.Both Statement I and Statement II are incorrect
   2. B.Statement I is correct but Statement II is incorrect
   3. C.Both Statement I and Statement II are correct
   4. D.Statement I is incorrect but Statement II is correct
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   Answer: B

6. Q832023 · 24 Jan 2023 · Shift 2· Numerical answer

   Maximum number of isomeric monochloro derivatives which can be obtained from 2,2,5,5- tetramethylhexane by chlorination is _____________

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   Answer: 3