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JEE Main Chemistry · General Organic Chemistry · Set 10 (Q271-300)

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  1. 271.
    Given below are two statements :
    Statement I : Sulphanilic acid gives esterification test for carboxyl group.
    Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.
    choose the most appropriate answer from the options given
    1. (1)Statement I is correct but Statement II is incorrect.
    2. (2)Both Statement I and Statement II are incorrect
    3. (3)Both Statement I and Statement II are correct
    4. (4)Statement I is incorrect but Statement II is correct.
  2. 272.
    In the given compound, the number of carbon atom is_____
    1. (1)Four
    2. (2)Two
    3. (3)One
    4. (4)Three
  3. 273.
    A liquid was mixed with ethanol and a drop of concentrated was added. A compound with a fruity smell was formed. The liquid was :
    1. (1)HCHO
    2. (2)
    3. (3)COOH
    4. (4)OH
  4. 274.
    The order of stability of the following tautomeric compounds is :
    1. (1)III > II > I
    2. (2)II > I > III
    3. (3)II > III > I
    4. (4)I > II > III
  5. 275.
    Arrange the following carbocations in decreasing order of stability.
    1. (1)A > C> B
    2. (2)A > B > C
    3. (3)C> B > A
    4. (4)C> A > B
  6. 276.
    The order of relative stability of the contributing structure is

    Choose the correct answer from the options given below:
    1. (1)I II III
    2. (2)II I III
    3. (3)
    4. (4)III II I
  7. 277.
    Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with in presence of concentrated indicates the presence of element/s
    1. (1)
    2. (2)
    3. (3) and
    4. (4)
  8. 278.
    Which one of the following nitro-compounds does not react with nitrous acid
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  9. 279.
    Which of the following molecules is expected to rotate the plane of polarized light?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  10. 280.
    Number of stereo centers present in linear and cyclic structures of glucose are respectively :
    1. (1)5 & 4
    2. (2)4 & 4
    3. (3)5 & 5
    4. (4)4 & 5
  11. 281.
    Which of the following statements are correct?
    (i) Inductive effect and resonance effect is possible in chlorobenzene.
    (ii) Resonance effect dominates over inductive effect in anisole.
    (iii) -nitrobenzoic acid is less acidic than -nitrobenzoic acid.
    (iv) Diphenylamine is more basic than aniline.
    1. (1)(i), (ii), (iii) and (iv)
    2. (2)(i) and (ii)
    3. (3)(iii) and (iv)
    4. (4)(i) and (iii)
  12. 282.
    The correct match between Item I and Item II is:
    Item I (compound) Item II (reagent)
    (A) Lysine (P) l-Naphthol
    (B) Furfural (Q) Ninhydrin
    (C) Benzyl alcohol (R)
    (D) Styrene (S) Ceric ammonium nitrate
    1. (1)(A) → (Q); (B) → (P); (C) → (S); (D) → (R)
    2. (2)(A) → (Q); (B) → (P); (C) → (R); (D) → (S)
    3. (3)(A) → (R); (B) → (P); (C) → (Q); (D) → (S)
    4. (4)(A) → (Q); (B) → (R); (C) → (S); (D) → (P)
  13. 283.
    In the following compound,

    the favourable site/s for protonation is/are :
    1. (1)(a) and
    2. (2) and (d)
    3. (3) and
    4. (4)
  14. 284.
    1Consider the following compound (X)

    The most stable and least stable carbon radicals, respectively, produced by homolytic cleavage of corresponding bond are:
    1. (1)II
    2. (2)V
    3. (3)
    4. (4)
  15. 285.
    Which of the following acids does not exhibit optical isomerism ?
    1. (1)Maleic acid
    2. (2)α-amino acids
    3. (3)Lactic acid
    4. (4)Tartaric acid
  16. 286.
    Among the following, the least stable resonating structure is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  17. 287.
    In which of the following molecules, all atoms are coplanar ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  18. 288.
    Phenol on reaction with dilute nitric acid, gives two products. Which method will be most effective for large scale separation ?
    1. (1)Chromatographic separation
    2. (2)Fractional Crystallisation
    3. (3)Steam distillation
    4. (4)Sublimation
  19. 289.
    Which of the following, upon treatment with tert-BuONa followed by addition of bromine water, fails to decolourize the colour of bromine ?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  20. 290.
    The amine that reacts with Hinsberg's reagent to give an alkali insoluble product is –
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  21. 291.
    An organic compound X(molecular formula ) has six carbon atoms in
    a ring system, two double bonds and a nitro group as substituent, is
    1. (1)homocyclic but not aromatic
    2. (2)aromatic but not homocyclic
    3. (3)homocyclic and aromatic
    4. (4)heterocyclic and aromatic.
  22. 292.
    The compound A on treatment with Na gives B, and with gives C, B and C react together to give diethyl ether. A, B and C are in the order
    1. (1)OH, , Cl
    2. (2)OH, ONa, Cl
    3. (3)Cl, , OH
    4. (4)OH, Cl, ONa
  23. 293.
    In Dumas’ method of estimation of nitrogen 0.35 of an organic compound
    gave 55 of nitrogen collected at 300 temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (aqueous tension at 300 mm).
    1. (1)15.45
    2. (2)16.45
    3. (3)17.45
    4. (4)14.45
  24. 294.
    Which of the following compound does not exhibit geometrical Isomerism?
    1. (1)2-Butene
    2. (2)3-Hexene
    3. (3)But-2-enal
    4. (4)Styrene
  25. 295.
    The major organic product in the reaction,
    CH3OCH(CH3)2 + HI →Product, is/are
    1. (1)CH3OH + (CH3)2CHI
    2. (2)ICH2OCH(CH3)2
    3. (3)
    4. (4)CH3Ι + (CH3)2CHOH
  26. 296.
    The increasing order of the of the following compounds is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 297.
    Identify the molecules which have sp-hybridized carbon(s) from the list given under.
    I. Ethane nitrile,
    II. Buta-1, 3 - diene,
    III. Propa-1, 2-diene,
    IV. Ethyne V. Benzene
    1. (1)I, II, III only
    2. (2)II, III, IV only
    3. (3)III, IV, V only
    4. (4)I, III, IV only
  28. 298.
    In Carius method of estimation of halogen, of an organic compound showed presence of of bromine. Which of these is the correct structure of the compound?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  29. 299.
    The correct IUPAC name of the given structure is
    1. (1)4-Amino-5-(2, 2-Dimethylpropyl) non-5-en-7-ol
    2. (2)6-Amino-3-hydroxy-5-(2,2-Dimethylpropyl) non-4-ene
    3. (3)7-Hydroxy-5-(2,2-Dimethylpropyl) non-5-en-4 amine
    4. (4)6-Amino-5-(2, 2-Dimethylpropyl) non-4-n-3-ol
  30. 300.
    0.8g of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be 42%, then mL of would have been neutralized by the ammonia evolved during the analysis.