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Set 9 of 14 · Questions 241-270 of 406

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JEE Main Chemistry · Alcohols, Phenols & Ethers · Set 9 (Q241-270)

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  1. 241.
    Acetophenone cannot be prepared easily starting from
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  2. 242.
    The reagent with which both acetaldehyde and acetone react is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  3. 243.
    When a mixture of calcium benzoate and calcium acetate is dry distilled, the resulting compound is
    1. (1)acetophenone
    2. (2)benzaldehyde
    3. (3)benzophenone
    4. (4)acetaldehyde.
  4. 244.
    Hex-4-ene-2-ol on treatment with PCC gives 'A'. ' on reaction with sodium hypoiodite gives 'B', which on further heating with soda lime gives 'C'. The compound 'C' is
    1. (1)2- pentene
    2. (2)proponaldehyde
    3. (3)2-butene
    4. (4)4-methylpent-2-ene
  5. 245.
    The major product formed in the following reaction is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  6. 246.
    Most stable product of the following reaction is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  7. 247.
    Compound I is heated with Cone. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  8. 248.
    The major product (P) of the given reaction is(where, Me is -)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  9. 249.
    The major products and in the following reactions are
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  10. 250.
    The major product of the following reaction sequence is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 251.
    Acetic acid is treated with and the product so obtained is subjected to dry distillation. The final product is
    1. (1)propanal
    2. (2)ethanol
    3. (3)ethanal
    4. (4)propanone.
  12. 252.
    Identify the major products and respectively in the following set of reactions.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  13. 253.
    Major product formed in the following reaction is a mixture of:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  14. 254.
    and are in the given reaction?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  15. 255.
    On heating glycerol with conc. a compound is obtained which has bad odour. The compound is
    1. (1)acrolein
    2. (2)formic acid
    3. (3)allyl alcohol
    4. (4)glycerol sulphate.
  16. 256.
    Compounds and in the following reaction are :

    1. (1)position isomers
    2. (2)functional isomers
    3. (3)metamers
    4. (4)identical.
  17. 257.
    What is the major product "P" of the following reaction ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  18. 258.
    Math the following acids with their values:

    A B C D
    1. (1)iii iv ii
    2. (2)ii iii iv
    3. (3)iii iv ii
    4. (4)iv ii iii i
  19. 259.
    Phenol in presence of sodium hydroxide reacts with chloroform to form salicylaldehyde. The reaction is known as
    1. (1)Kolbe's reaction
    2. (2)Reimer-Tiemann reaction
    3. (3)Stephen reaction
    4. (4)Etard reaction.
  20. 260.
    Which alkene on ozonolysis gives CH3CH2CHO and ?
    1. (1)
    2. (2)CH2CH2CH == CHCH2CH3
    3. (3)CH3CH2CH == CHCH3
    4. (4)
  21. 261.
    Give correct sequences of reaction for following conversion :
    1. (1)DIBAL –H, NaBH4, /Δ
    2. (2)/Δ, NaBH4, DIBAL–H
    3. (3)NaBH4, DIBAL–H, /Δ
    4. (4)DIBAL–H, /Δ, NaBH4
  22. 262.
    In the given conversion the compound A is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  23. 263.
    Identify A and B in the chemical reaction?
    A (Major) B (Major)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  24. 264.
    The major product formed in the following reaction sequence is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  25. 265.
    The organic compound that gives following qualitative analysis is:
    Test Inference
    (1)Dil. HCl Insoluble
    (2)NaOH Solution soluble
    (3)Water Decolourization
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  26. 266.
    The major product of following reaction is :
    R–C≡N ?
    1. (1)
    2. (2)
    3. (3)RCHO
    4. (4)RCOOH
  27. 267.
    Which of the following belongs to benzylic alcohol type?
    1. (1)1-Phenyl-2-Propanol
    2. (2)1-Pheny - 1-Propanol
    3. (3)4-Phenyl-but-3-ene-2-ol
    4. (4)2-Methyl- but-3-ene-2-ol
  28. 268.
    An organic compound when treated with conc. undergoes cleavage to yield compounds and . gives yellow precipitate with where as ’ tautomerizes to . gives positive iodoform test. could be
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  29. 269.
    Consider the above reaction, the major product "P" formed is :-
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  30. 270.
    Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields
    1. (1)-butyl alcohol
    2. (2)sec-butyl alcohol
    3. (3)tert-butyl alcohol
    4. (4)iso-butyl alcohol.