Hydrocarbons

1

Butene-­1 may be converted to butane by reaction with

  1. Zn-Hg
  2. Sn-HCl
  3. Zn-­HCl
  4. Pd/H2
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2

On mixing a certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloroalkane. This alkane could be

  1. neopentane
  2. pentane
  3. propane
  4. isopentane
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3

The reaction of toluene with Cl2 in presence of FeCl3 gives predominantly

  1. benzoyl chloride
  2. m-­chlorobenzene
  3. benzyl chloride
  4. o­- and p­-chlorotoluene
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4

Which of the following reactions will yield 2, 2-­dibromopropane?

  1. C2H2 + 2HBr →
  2. CH3CHCH2 + 2HBr →
  3. CH3CHCHBr + HBr →
  4. CH3CCH + 2HBr →
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5

The hydrocarbon which can react with sodium in liquid ammonia is

  1. CH3CHCHCH3
  2. CH3CH2C≡CCH2CH3
  3. CH3CH2CH2C≡CCH2CH2CH3
  4. CH3CH2C≡CH
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6

The alkene that exhibits geometrical isomerism is

  1. 2-methyl propene
  2. 2 methyl 2 butene
  3. 2-Butene
  4. propene
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7

One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is

  1. 1-butene
  2. 2-butene
  3. propene
  4. ethene
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8

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of

  1. an acetylenic triple bond
  2. a vinyl group
  3. two ethylenic double bonds
  4. an isopropyl group
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9

Alkyl halides react with dialkyl copper reagents to give

  1. alkenes
  2. alkenyl halides
  3. alkanes
  4. alkyl copper halides
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10

During dehydration of alcohols to alkenes by heating with concentrated H2SO4 the initiation step is

  1. protonation of alcohol molecule
  2. formation of an ester
  3. formation of carbocation
  4. elimination of water
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11

Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?

  1. Acetic acid
  2. Butan­-2-­one
  3. Ethyl acetate
  4. Acetamide
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