The number of moles of Grignard reagent consumed per mole of the

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 Multiple Choice QuestionsMultiple Choice Questions

161.

Chlorobenzene is o, p-directing in electrophilic substitution reaction. The directing influence is explained by

  • +M of Ph

  • +I of Cl

  • +of Cl

  • -I of Ph


162.

The end product 'C' in the following reaction-


163.

Out of

Relative stabilities order is

  • 4 < 2 < 3 < 1

  • 2 > 4 < 3 < 1

  • 4 < 2 < 1 < 3

  • 2 < 4 < 1 < 3


164.

CH3MgBr + CH2 = CH-COH H3O+ Product

It is (1 : 4 addition)

  • CH2=CH-C||CH3OH-H

  • CH2OH-CH=CH-CH3

  • CH3CH2CH2CHO

  • None of the above


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165.

Which one is least reactive in a nucleophilic substitution reaction?

  • CH3CH2Cl

  • CH2=CHCH2Cl

  • CH2=CHCl

  • (CH3)3CCl


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166.

The number of moles of Grignard reagent consumed per mole of the compound

  • 2

  • 3

  • 1

  • 4


D.

4

Grignard reagent (RMgX) will attack on C-O bond of the given compound. As there are 4-C-O bonds in the given compound, thus four moles of Grignard reagent consumed per mole of the given compound.


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167.

Among the given compound choose the two i.hat yield same carbocation on ionisation.

  • (ii) and (iv)

  • (i) and (ii)

  • (ii) and (iii)

  • (i) and (iii


168.

An organic compound neither reacts neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is:


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169.

The major product of the following reaction is:


170.

The major product of the following reaction is:


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