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Set 6 of 22 · Questions 151-180 of 650

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NEET Chemistry · General Organic Chemistry · Set 6 (Q151-180)

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  1. 151.
    Assertion : Addition of bromine to trans-2-butene yields meso-2. 3-dibromobutane.
    Reason : Addition of bromine to an alkene is an electrophilic addition.
    1. (1)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
    2. (2)Both Assertion and Reason are true but Reason is not correct explanation of Assertion.
    3. (3)Assertion is true but Reason is false.
    4. (4)Assertion is false but Reason is true.
  2. 152.
    Presence of halogen in organic compounds can be detected using
    1. (1)Leibigs' test
    2. (2)Kjeldahl's test
    3. (3)Duma's test
    4. (4)Beilstein's test.
  3. 153.
    Which one of the following shows functional isomerism?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  4. 154.
    Identify correct statements from the following :(A) Propanal and propanone are functional isomers.(B) Ethoxyethane and methoxypropane are metamers.(C) But-2-ene shows optical isomerism.(D) But-1-ene and but-2-ene are functional isomers.(E) Pentane and 2, 2-dimethyl propane are chain isomers.
    Choose the correct answer from the options given below:
    1. (1)(A) (B) and (C) only
    2. (2)(B) (C) and (D) only
    3. (3)(C) (D) and (E) only
    4. (4)(A) (B) and (E) only
  5. 155.
    Given below are two statements:
    Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds.
    Statement II: The sodium fusion extract of an organic compound having N and S gives prussian blue colour with and
    choose the correct answer from the options given below.
    1. (1)Statement I is true but Statement II is false
    2. (2)Both Statement I and Statement II are false
    3. (3)Both Statement I and Statement II are true
    4. (4)Statement I is false but Statement II is true
  6. 156.
    In the Kjeldahl’s method for estimation of nitrogen present in a soil sample,
    ammonia evolved from 0.75 of sample neutralized 10 ofl . The percentage ofnitrogen in the soil is
    1. (1)37.33
    2. (2)45.33
    3. (3)35.33
    4. (4)43.33
  7. 157.
    Which of the following will have a meso-isomer also ?
    1. (1)2-Chlorobutane
    2. (2)2,3-Dichlorobutane
    3. (3)2,3-Dichloropentane
    4. (4)2-Hydroxypropanoic acid
  8. 158.
    The predominant form of histamine present in human blood is (, Histidine = 6.0)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  9. 159.
    Consider the following reaction

    Identify the structure of the major product ‘X’.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  10. 160.
    The number of bonds, bonds and lone pair of electrons in pyridine, respectively are
    1. (1)12,2,1
    2. (2)11,2,0
    3. (3)12,3,0
    4. (4)11,3,1
  11. 161.
    Stability order of following alkoxide ions is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  12. 162.
    Match items of column I and II

    Correct match is :
    1. (1)A-(III), B-(IV), C-(II), D-(I)
    2. (2)A-(I), B-(III), C-(II), D-(IV)
    3. (3)A-(II), B-(III), C-(IV), D-(I)
    4. (4)A-(II), B-(IV), C-(I), D-(III)
  13. 163.
    Which amongst the following is the strongest acid ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)CH
  14. 164.
    The IUPAC name of the following molecule is
    1. (1)2-Methyl-5 nitro-1-chlorobenzene
    2. (2)3-Chloro-4 methyl-1-nitrobenzene
    3. (3)2-Chloro-1 methyl-4-nitorbenzene
    4. (4)2-Chloro-4 nitro-1-methylbenzene
  15. 165.
    The IUPAC name of the compound having the formula is
    1. (1)l‐butyne‐3‐ene
    2. (2)but‐l‐yne‐3‐ene
    3. (3)l‐butene‐3‐yne
    4. (4)‐butene‐l‐yne.
  16. 166.
    Arrange the following conformational isomers of n-butane in order of their increasing potential energy :
    1. (1)II < III < IV < I
    2. (2)I < IV < III < II
    3. (3)II < IV < III < I
    4. (4)I < III < IV < II
  17. 167.
    Rate of the reaction is fastest when Z is :
    1. (1)Cl
    2. (2)
    3. (3)
    4. (4)
  18. 168.
    The increasing order of for the following compounds will be :
    (A) –CH= (B)
    (C) –NH–
    1. (1)(A) < (B) < (C)
    2. (2)(B) < (C) < (A)
    3. (3)(B) < (A) < (C)
    4. (4)(C) < (A) < (B)
  19. 169.
    Which of the following species does not exert a resonance effect?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  20. 170.
    Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
    Assertion (A) : Cis form of alkene is found to be more polar than the trans form.
    Reason (R): Dipole moment of trans isomer of 2-butene is zero.In the light of the above statements, choose the correct answer from the options given below :
    1. (1)(A) is false but (R) is true
    2. (2)Both (A) and (R) are true and (R) is the correct explanation of (A)
    3. (3)(A) is true but (R) is false
    4. (4)Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  21. 171.
    The correct order of increasing acid strength of the compounds.
    (A) H (B) H
    (C) H (D) is
    1. (1)B < D < A < C
    2. (2)D < A < C < B
    3. (3)D < A < B < C
    4. (4)A < D < C < B
  22. 172.
    Consider the following compounds :
    Hyperconjugation occurs in
    1. (1)III only
    2. (2)I and III
    3. (3)I only
    4. (4)II only
  23. 173.
    Match List I with List II.

    Choose the correct answer from the options given below :-
    1. (1)A-III,B-IV,C-I,D-II
    2. (2)A-IV, B-III, C-I, D-II
    3. (3)A-II, B-III, C-I, D-IV
    4. (4)A-III, B-I, C-IV, D-II
  24. 174.
    IUPAC name of the following is
    1. (1)1,5‐hexenyne
    2. (2)l‐hexene‐5‐yne
    3. (3)1‐hexyne ‐ene
    4. (4)1,5‐hexynene.
  25. 175.
    The stability of carbanions in the following.

    is in the order of
    1. (1)(iv)
    2. (2)
    3. (3)
    4. (4)(ii)
  26. 176.
    The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of
    nitrogen in which one of the following compounds?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 177.
    Thin layer chromatography of a mixture shows the following observation:

    The correct order of elution in the silica gel column chromatography is
    1. (1)B,A, C
    2. (2)B, C, A
    3. (3)A, C,B
    4. (4)C,A, B
  28. 178.
    Correct order of stability of carbanion is -
    1. (1)
    2. (2)
    3. (3)
    4. (4) a
  29. 179.
    Which of the following compound will exhibit geometrical isomerism ?
    1. (1)1-Phenyl-2-butene
    2. (2)3-Phenyl-1-butene
    3. (3)2-Phenyl-1-butene
    4. (4)1,1-Diphenyl-1-propane
  30. 180.
    Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)H2C=C=O