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 Multiple Choice QuestionsMultiple Choice Questions

21.

The order of decreasing reactivity towards an electrophilic reagent, for the following:

i) Benzene
ii) Toluene
iii) Chlorobenzene
iv) Phenol

would be:

  • (i) > (ii) > (iii) > (iv)

  • (ii) > (iv) > (i) > (iii)

  • (iv) > (iii) > (ii) >(i)

  • (iv) > (iii) > (ii) >(i)


22.

The major organic product in the reaction,

CH3 -O- CH(CH3)2 + HI → Product is:

  • CH3OH + (CH3)2 + CHI

  • ICH2OCH(CH3)2

  • CH3O CI(CH3)2

  • CH3O CI(CH3)2

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23.

Which one is the most acidic compound?

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24.

Which one is the correct order of acidity?

  • CH2= CH2> CH3– CH = CH2> CH3– C ≡ CH > CH ≡ CH

  • CH ≡  CH > CH3– C ≡  CH > CH2= CH2> CH3– CH3

  • CH ≡ CH > CH2= CH2> CH3– C ≡  CH >CH3– CH3

  • CH ≡ CH > CH2= CH2> CH3– C ≡  CH >CH3– CH3

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25.

Identify A and predict the type of reaction

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26.

The heating of phenyl-methyl ethers with HI produces.

  • Ethyl chlorides

  • Iodobenzene

  • Phenol

  • Phenol

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27.

The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order

  • C2H5OH, C2H6, C2H5Cl

  • C2H5OH, C2H5Cl, C2H5ONa

  • C2H5OH, C2H5ONa, C2H5Cl

  • C2H5Cl, C2H6, C2H5OH


28.

In the reaction,

The electrophile involved is

  • Dichloromethyl cation (C+HCl2)

  • Formyl cation (C+HO)

  • Dichlorocarbene (:CCl2)

  • Dichloromethyl anion (C-HCl2)


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29.

The product (P) is


A.

This is an example of Williamson's synthesis.


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30.

Aqueous 10% NaHCO3 solution is used as a reagent for identifying 'A'. Which of the following compounds yield 'A' on hydrolysis?

  • CH3COOC2H5

  • C2H5-COO-C2H5

  • CH3CHO

  • CH3CH2OH


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