Organic Reactions & Conversions · JEE Main previous year questions

2022 37 questions

1. Q702022 · 29 Jul 2022 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: C

2. Q712022 · 29 Jul 2022 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: D

3. Q732022 · 29 Jul 2022 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: A

4. Q742022 · 29 Jul 2022 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

5. Q682022 · 28 Jul 2022 · Shift 1
   
   1. A.'A' and 'B' are both Markovnikov addition products.
   2. B.'A' is Markovnikov product and 'B' is anti-Markovnikov product.
   3. C.'A' and 'B' are both anti-Markovnikov products.
   4. D.'B' is Markovnikov and 'A' is anti-Markovnikov product.
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   Answer: B

6. Q702022 · 28 Jul 2022 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: B

7. Q672022 · 28 Jul 2022 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: C

8. Q732022 · 28 Jul 2022 · Shift 2
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: C

9. Q902022 · 27 Jul 2022 · Shift 1· Numerical answer
   
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   Answer: 30

10. Q682022 · 27 Jul 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

11. Q692022 · 27 Jul 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: B

12. Q702022 · 26 Jul 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

13. Q722022 · 26 Jul 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: A

14. Q632022 · 25 Jul 2022 · Shift 2

    $K_{a_1}$, $K_{a_2}$ and $K_{a_3}$ are the respective ionization constants for the following reactions (a), (b) and (c). (a) $H_2{C}_2{O}_4\rightleftharpoons H^{+}+H{C}_2{O}_4^{-}$ (b) $H{C}_2{O}_4^{-}\rightleftharpoons H^{+}+C_2{O}_4^{2-}$ (c) $H_2{C}_2{O}_4\rightleftharpoons 2H^{+}+C_2{O}_4^{2-}$ The relationship between $K_{a_1}$, $K_{a_2}$ and $K_{a_3}$ is given as :

    1. A.$K_{a_3}=K_{a_1}+K_{a_2}$
    2. B.$K_{a_3}=K_{a_1}-K_{a_2}$
    3. C.$K_{a_3}=K_{a_1}/K_{a_2}$
    4. D.$K_{a_3}=K_{a_1}\times K_{a_2}$
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    Answer: D

15. Q682022 · 25 Jul 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: D

16. Q692022 · 25 Jul 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: B

17. Q692022 · 30 Jun 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: A

18. Q712022 · 30 Jun 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: B

19. Q722022 · 30 Jun 2022 · Shift 1
    
    1. A.
    2. B.
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    4. D.
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    Answer: B

20. Q742022 · 30 Jun 2022 · Shift 1

    The reagent neutral ferric chloride is used to detect the presence of ____________

    1. A.sulphide ion and alcoholic $-\mathrm{OH}$ group.
    2. B.acetate ion and phenolic $-\mathrm{OH}$ group.
    3. C.sulphide ion and phenolic $-\mathrm{OH}$ group.
    4. D.acetate ion and alcoholic $-\mathrm{OH}$ group.
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    Answer: B

21. Q682022 · 28 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

22. Q882022 · 28 Jun 2022 · Shift 2· Numerical answer
    
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    Answer: 1

23. Q672022 · 27 Jun 2022 · Shift 1
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: A

24. Q692022 · 27 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: C

25. Q702022 · 27 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
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    Answer: D