Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

31.

The hybridization involved in complex [Ni(CN)4]2- is (Atomic number of Ni = 28)

  • dsp2

  • sp3

  • d2sp3

  • d2sp3

1641 Views

32.

Which of the statements given below is incorrect?

  • Cl2O7 is an anhydride of perchloric acid

  • O3molecule is bent

  • ONF is isoelectronic with NO2

  • ONF is isoelectronic with NO2

1054 Views

33.

Strong reducing behaviour of H3PO4 is due to

  • the presence of one -OH group and two P-H bonds

  • high electron gain enthalpy of phosphorous 

  • the high oxidation state of phosphorus

  • the high oxidation state of phosphorus

1388 Views

34.

Which of the following reaction (s) can be used for the preparation of alkyl halides?


straight I. space CH subscript 3 CH subscript 2 OH space plus space HCl space rightwards arrow with Anh. ZnCl subscript 2 on top

II. space CH subscript 3 CH subscript 2 OH space plus space HCl space rightwards arrow

III. space left parenthesis CH subscript 3 right parenthesis subscript 3 COH space plus space HCl space rightwards arrow

IV. space left parenthesis CH subscript 3 right parenthesis subscript 2 CHOH space plus space HCl space rightwards arrow with anh. space ZnCl subscript 2 on top

  • I, III and IV

  • I and II

  • Only IV

  • Only IV

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35.

In an SN1 reaction on chiral centres, there is 

  • 100% racemisation

  • inversion more than retention leading to partial racemization

  • 100% retention

  • 100% retention

1283 Views

36.

A reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagents is 

  • a Grignard reagent

  • hydrazine in presence of feebly acidic solution

  • hydrocyanic acid

  • hydrocyanic acid

825 Views

37.

Method by which aniline cannot be prepared is 

  • hydrolysis phenyl isocyanide with the acidic solution

  • degradation of benzamide with bromine in alkaline solution

  • reduction of nitrobenzene with H2/Pd in ethanol

  • reduction of nitrobenzene with H2/Pd in ethanol

1090 Views

38.

Which one of the following esters gets hydrolysed most easily under alkaline conditions?

1129 Views

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39.

The reaction of phenol with chloroform in the presence of dilute sodium hydroxide finally introduces, which one of the following functional group? 

  • -CH2Cl

  • -COOH

  • -CHCl2

  • -CHCl2

1495 Views

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40.

Which of the following is not the product of dehydration of 


B.

When intermediate carbocation is stable, no rearrangement takes place in carbonation,


633 Views

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