Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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51.

In the reaction

HCL+O+CH3MgI   A  H2O  B+Mg(OH) I

What are A and B?

  • CH3O MgI and CH3-OH

  • CH3CH2 OMg I and C2H5-O-C2H5

  • CH3CH2O Mg I and CH3-CH2-OH

  • CH3-CH2-I and CH3-CH2-OH


C.

CH3CH2O Mg I and CH3-CH2-OH

HCHO + CH3MgI CH3CH2OMgI (A)

CH3CH2OMgI +H2CH3CH2OH (B)+ Mg(OH) I


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52.

In the given reaction,

CH3-CH2-CH2-O-CH2-CH3coldHCl [X]+[Y]

[X]+[Y] are respectively.

  • CH3-CH2-CH2OH and CH3-CH2-Cl

  • CH3-CH2-CH2-Cl and CH2-CH2-OH

  • CH3-CH2-CH2-Cl and CH2=CH2

  • CH3-CH3=CH2 and CH2=CH2


53.

Which of the following pair will give positive tollen's test?

  • Glucose, sucrose

  • Glucose, fructose

  • Hexanol, acetophenone

  • Fructose, sucrose


54.

Predict the following product

(X) Cinnanaic acid is


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55.

The alcohol that produces turbidity immediately with ZnCL2 + conc. HCl at room temperature:

  • 1- hydroxybutane

  • 2- hydroxybutane

  • 2- hydroxy -2- methyl propane

  • 1- hydroxy -2- methyl propane


56.

Which of the following polymers is prepared by condensation polymerisation ?

  • Teflon

  • Styrene

  • Rubber

  • Nylon 6, 6


57.

During reduction of carbonyl compounds by hydrazine and KOH, the first intermediate formed is:

  • RC≡N

  • RCONH2

  • RCH≡N

  • RCH=NH2


58.

Consider the following consersion,

The reagent 'X' will be:

  • H3PO2

  • Cu2Cl2

  • HgSO4/H2SO4

  • H+/H2O


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59.

The artificial sweetner , saccharin is manufactured from:

  • toluene

  • cellulose

  • starch

  • cyclohexane


60.

The sum of the number of primary alcoholic group present in open chain structure of glucose and fructose are:

 

  • 4

  • 5

  • 3

  • 2


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