CH3CH2C≡CH →R butanone-2. R is from Chemist

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 Multiple Choice QuestionsMultiple Choice Questions

951.

In a set of reactions, acetic acid yielded a product D.

CH3COOH SOCl2  A anhyd. AlCl3Benzene B HCN C HOH  D

The structure of D would be


952.

The major organic product formed from the following reaction (ii) LiAlH4 (iii) H2O(i) CH3NH2 ... is


953.

Aldehydes or ketones are treated with-bromo ester in the presence of zinc to form α-hydroxy ester followed by dehydration to form α,β-unsaturated ester.This reaction is known as:

  • Witting reaction.

  • Tischenko reaction.

  • Reformatsky reaction.

  • Crossed-cannazzaro's reaction.


954.

The correct structure of the stable compound which is obtained when acetophenone react with a base C2H5OH is


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955.

Indicate correct synthesis of carboxylic acid from organometallic compound :

  • All of the above


956.

In the following reduction, reducing agent used is:

  • DIBAH

  • LiAlH4

  • NaAlH4

  • H2/PdBaSo4


957.

HCHO reacts with CH3MgI to give:

  • CH3CH2OH

  • CH3OH

  • CH3CH2I

  • CH3I


958.

Which among the following is strongest acid ?

  • H(ClO)O2

  • H(ClO)O3

  • H(ClO)O

  • H(ClO)


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959.

Predict the product Bin the given reaction:


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960.

CH3CH2CCH R butanone-2. R is

  • Hg++/ dil.H2SO4

  • KMnO4

  • KClO3

  • K2Cr2O7


A.

Hg++/ dil.H2SO4

In the above given reaction, R is Hg++/ dilute. H2SO4

This is because alkyne changes to ketone upon hydrolysis in presence of mercury salt.

CH3CH2CCH Hg++/ H2SO4H.OH CH3CH2COCH3 (butanone-2)


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