Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

Chloroform , on exposing to air and sunlight produce :

  • chloropicrin

  • phosgene

  • carbon tetrachloride

  • benzene


52.

CH3COOC2H5 with excess of C2H5MgBr and hydrolysis gives :

  • C2H5-C(CH3)=O

  • (C2H5)2-C(CH3)-OH

  • (CH3)2-C=O

  • (CH3)2-C(C2H5)-OH


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53.

Williamson's synthesis is used to prepare :

  • bakelite

  • PVC

  • acetone

  • diethyl ether


D.

diethyl ether

When sodium ethoxide react with ethyl bromide , it gives diethyl ether .

CH3CH2O sodium ethoxide Na + Br CH2CH3ethyl bromide  CH3CH2OCH2CH3

This reaction is known as Williamson's synthesis .


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54.

Glucose has following functional group :

  • aldehyde

  • aldehyde and alcohol

  • alcohol

  • ketone and alcohol


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55.

Natural rubber is a polymer of :

  • cis-isoprene

  • trans-isoprene

  • co-cis and trans isoprene

  • None of the above


56.

The IUPAC name for the formula :

 is :

  • 2-methyl-2-butenoic acid

  • 3-methyl-3-butenoic acid

  • 3-metyl-2-butenoic acid

  • 2-methyl-3-butenoic acid


57.

Which of the following can exhibit keto-enol tautomerism ?

  • H-CO||-H

  • (CH3)3C-CO||-H

  • CH3-CO||-H

  • CCl3-CO||-H


58.

The increasing order of acidity is :

  • CHCl2COOH , CH2ClCOOH , CH3COOH

  • CH3COOH , CHCl2COOH , CH2ClCOOH

  • CH2BrCOOH , CH2ClCOOH , CH3COOH

  • CH2BrCOOH , CH2ClCOOH , CHCl2COOH


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59.

Cannizaro's reaction is exhibited by :

  • HCHO

  • CH3CHO

  • CH3CH2CHO

  • CH3CH2CH2CHO


60.

Invert sugar is a mixture of :

  • glucose and fructose

  • glucose and lactose

  • glucose and galactose

  • only glucose


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