Which of the following is most reactive towards electrophilic nit

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 Multiple Choice QuestionsMultiple Choice Questions

361.

Which one of the following formulae does not represent an organic compound ?

  • C4H10O4

  • C4H6O4

  • C4H7ClO4

  • C4H9O4


362.

C6H5NO2 Sn/ HCl C6H5X

'X' is identified as:

  • NO

  • -NH2

  • NHOH

  • None of these


363.

The test for unsaturation is confirmed by the decolourisation of which of the following ?

  • Iodine water

  • CusO4 solution

  • Bromine water

  • All of these


364.

Catalyst used in dimerisation of acetylene to prepare chloroprene is

  • HgSO4 + H2SO4

  • Cu2Cl2

  • Cu2Cl2 + NH4Cl

  • Cu2Cl2 + NH4OH


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365.

The dehydration of butan-1-ol gives

  • 1-butene as the main product

  • 2-butene as the main product

  • equal amounts of 1-butene and 2-butene

  • 2-methyl propene


366.

Cetane is a compound which has very good ignition property. Chemically it is

  • CH3(CH2)14CH3

  • (CH3)3C(CH2)11CH3

  • C17H34

  • None of the above


367.

The electrophile involved in the nitration of benzene is :

  • NO2

  • NO2+

  • NO

  • NO2-


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368.

Which of the following is most reactive towards electrophilic nitration ?

  • Toluene

  • Benzene

  • Benzoic acid

  • Nitrobenzene


A.

Toluene

Due to + I effect of CH3 in toluene, it is more reactive than benzene. Due to electron with drawing nature of -COOH group in benzoic acid and -NO2 group in nitrobenzene, both benzoic acid and nitrobenzene are less reactive than benzene.


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369.

The most suitable reagent for the following conversion, is :

   

  • H2, Pd/C, quinoline

  • Zn/HCl

  • Hg2+/H+, H2O

  • Na/liquid NH3


370.

The number of sigma (σ) and pi (π) pent-2-en-4-yne is

  • 8σ bonds and 5π bonds

  • 11σ bonds and 2π bonds

  • 13σ bonds and no π bonds

  • 10σ bonds and 3π bonds


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