Ozonolysis of an alkene produces only one dicarbonyl compound. Th

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 Multiple Choice QuestionsMultiple Choice Questions

261.

The isomerisation of 1-butyne to 2-butyne can be achieved by treatment with

  • hydrochloric acid

  • ammoniacal silver nitrate

  • ammoniacal cuprous chloride

  • ethanolic potassium hydroxide


262.

The reduction of benzenediazonium chloride to phenyl hydrazine can be accomplished by

  • SnCl2, HCl

  • Na2SO3

  • CH3CH2OH

  • H3PO2


263.

The major product(s) obtained form the following reaction of 1 mole of hexadeuteriobenzene is/are


264.

The conversion of CH3-CH2-COOH to

accomplished by

  • SOCl2, LiAlH4, ethylene glycol

  • SOCl2, KMnO4, NH2NH2

  • SnCl2, HCl, Na2SO3

  • HCl, SnCl2, ethylene glycol


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265.

Ozonolysis of an alkene produces only one dicarbonyl compound. The structure of the alkene is

  • H3C - CH = CH - CH3

  • CH3 - CH = CH - CH = CH3


B.

Only  gives one compound ozonolysis.

All other options give more than one aldehyde/ketone on ozonolysis.


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266.

From the following compounds, choose the one which is not aromatic.


267.

Identify X in the following sequence reactions


268.

The major products obtained during ozonolysis of 2, 3-dimethyl-1-butene and subsequent reductions with Zn and H2O are

  • methanoic acid and 2-methyl-2-butanone

  • methanal and 3-methyl-2-butanone

  • methanol and 2, 2 -dimethyl-3-butanone

  • methanoic acid and 2-methyl-3-butanone


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269.

1,4-dimethylbenzene on heating with anhydrous AlCl3 and HCl produces

  • 1, 2-dimethylbenzene

  • 1, 3-dimethylbenzene

  • 1,2, 3-trimethylbenzene

  • ethylbenzene


270.

Best reagent for nuclear iodination of aromatic compounds is

  • KI/CH3COCH3

  • I2/CH3CN

  • KI/ CH3COOH

  • I2/ HNO3


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