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Set 23 of 25 · Questions 661-690 of 724

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JEE Main Chemistry · General Organic Chemistry · Set 23 (Q661-690)

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  1. 661.
    Which of the following compounds shows geometrical isomerism ?
    1. (1)2-methylpent-1-ene
    2. (2)4-methylpent-1-ene
    3. (3)2-methylpent-2-ene
    4. (4)4-methylpent-2-ene
  2. 662.
    Among the following, reaction(s) which gives(give) tert-butyl benzene as the major product is(are)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  3. 663.
    The correct IUPAC name of the compound is :
    1. (1)4-Ethyl-3-propylhex-1-ene
    2. (2)3-Ethyl-4-ethenylheptane
    3. (3)3-Ethyl-4-propylhex-1-ene
    4. (4)3-(1-ethylpropyl)hex-1-ene
  4. 664.
    The IUPAC name of the following compound is :
    1. (1)1, 1-Dimethyl-2-ethylcyclohexane
    2. (2)2-Ethyl-1,1-dimethylcyclohexane
    3. (3)2, 2-Dimethyl-1-ethylcyclohexane
    4. (4)1-Ethyl-2,2-dimethylcyclohexane
  5. 665.
    The correct stability order of the following resonance structures of is
    1. (1)I II III
    2. (2)II III I
    3. (3)II I III
    4. (4)III II I
  6. 666.
    The correct decreasing order of densities of the following compounds is:
    1. (1)(D) > (C) > (B) > (A)
    2. (2)(C) > (D) > (A) > (B)
    3. (3)(C) > (B) > (A) > (D)
    4. (4)(A) > (B) > (C) > (D)
  7. 667.
    Phenyl magnesium bromide reacting with t-Butyl alcohol gives
    1. (1)Ph – OH
    2. (2)Ph – H
    3. (3)
    4. (4)
  8. 668.
    In which of the following pairs A is more stable than B ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)Ph3C•, (CH3)C•
  9. 669.
    Resonance effect is not observed in
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  10. 670.
    Maximum enol content is in :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 671.
    Rectified spirit is a mixture of
    1. (1)5% ethyl alcohol + 95% water
    2. (2)94% ethyl alcohol + 6% water
    3. (3)94.4% methyl alcohol + 5.6% water
    4. (4)95.6% ethyl alcohol + 4.4% water
  12. 672.
    Among the following L–serine is : -
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  13. 673.
    Geometrical isomerism is shown by
    1. (1)
    2. (2)
    3. (3)
    4. (4)none of these.
  14. 674.
    Which of the following compounds has wrong IUPAC name:
    1. (1) → Ethyl butanoate
    2. (2) → 3-Methylbutanal
    3. (3) → 2-Methyl-3-butanol
    4. (4) → 2-Methyl-3-pentanone
  15. 675.
    Which of the following are aromatic?
    1. (1)A and C only
    2. (2)B and D only
    3. (3)C and D only
    4. (4)A and B only
  16. 676.
    Write IUPAC name of following
    1. (1)2-chloro-1-methoxy-4-nitrobenzene
    2. (2)2-chloro-4-nitro anisole
    3. (3)3-chloro-4-methoxy-1-nitrobenzene
    4. (4)1-chloro-2-methoxy-5-nitrobenzene
  17. 677.
    Major product of following reaction:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  18. 678.
    IUPAC name of is
    1. (1)4-hydroxy-1-methyl pentanoic acid
    2. (2)4-hydroxy-2-methyl pentanoic acid
    3. (3)2-hydroxy-4-methyl pentanoic acid
    4. (4)2-hydroxy-2-methyl pentanoic acid.
  19. 679.
    The correct IUPAC name for the compound
    1. (1)4‐ethyl‐3‐propylhex‐1‐ene
    2. (2)3‐ethyl ‐ethenylheptane
    3. (3)3‐ethyl‐4‐propylhex‐5‐ene
    4. (4)3‐(1‐ethylpropyl)hex‐1‐ene.
  20. 680.
    The IUPAC name of is :
    1. (1)5, 5-Diethyl -4, 4-dimethylpentane
    2. (2)3-Ethyl-4,4-dimethylheptane
    3. (3)1, 1-Diethyl-2, 2-dimethylpentane
    4. (4)4, 4-Dimethyl-5, 5-diethylpentane
  21. 681.
    IUPAC name of following compound is
    1. (1)2-Aminopentanenitrile
    2. (2)2-Aminobutanenitrile
    3. (3)3-Aminobutanenitrile
    4. (4)3-Aminopropanenitrile
  22. 682.
    The IUPAC name of
    1. (1)‐hydroxy‐l‐methylpentanal
    2. (2)4‐hydroxy‐2‐methylpent‐2‐en‐lal
    3. (3)2‐hydroxy‐4‐methylpent‐3‐en‐5‐al
    4. (4)2‐hydroxy‐3‐methylpent‐2‐en‐5‐al
  23. 683.
    The IUPAC name of neopentane is :
    1. (1)2, 2-dimethylpropane
    2. (2)2-methylpropane
    3. (3)2, 2-dimethylbutane
    4. (4)2-methylbutane
  24. 684.
    :
    1. (1)Resonating structures
    2. (2)Tautomers
    3. (3)Geometrical isomers
    4. (4)Optical isomers
  25. 685.
    IUPAC name of CH2=CH–CH2–CH2–C≡CH is :
    1. (1)1, 4-Hexenyne
    2. (2)1-Hexen-5-yne
    3. (3)1-Hexyn-5-ene
    4. (4)1, 4-Hexyene
  26. 686.
    Structure of 4-Methylpent-2-enal is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 687.
    Compound 'P' on nitration with dil. yields two isomers (a) and (b). These isomers can be separated by steam distillation. Isomers (a) and (b) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on reaction with cone. yields a yellow compound 'C', a strong acid. The number of oxygen atoms is present in compound 'C'
  28. 688.
    Number of carbocations from the following that are not stabilized by hyperconjugation is ________
  29. 689.
    The number of chiral centers in chloramphenicol is:
  30. 690.
    Total number of optically active compounds from the following is_______