In the compound HC≡C-C(CH3)=CH2 the hybridisation

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 Multiple Choice QuestionsMultiple Choice Questions

351.

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

  • -CN

  • -SO3H

  • -COOH

  • -NO2


352.

The radical  because it has

  • 6p-orbitals and 6 unpaired electrons

  • 7p-orbitals and 6 unpaired electrons

  • 7p-orbitals and 7 unpaired electrons

  • 6p-orbitals and 7 unpaired electrons


353.

Which of the following compounds will not undergo Friedal-Craft's reaction easily?

  • Cumene

  • Xylene

  • Nitrobenzene

  • Toluene


 Multiple Choice QuestionsShort Answer Type

354.

How nitrobenzene is identified using Mulliken-Barker test?


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 Multiple Choice QuestionsMultiple Choice Questions

355.

Which one of the following is s-butyl phenyl vinyl methane?


356.

On mixing alkane with chlorine and irradiating with ultraviolet light, it forms only one monochloroalkane. The alkane is

  • Propane

  • Pentane 

  • Iso-pentane

  • Neo-pentane


357.

What is obtained when nitrobenzene is treated sequentially with (i) NH4Cl/Zn dust and (ii) H2SO4/Na2Cr2O7?

  • meta-chloronitrobenzene

  • para-chloronitrobenzene

  • Nitrosobenzene

  • Benzene


358.

The addition of HBr to 2-pentene gives

  • 2-bromopentane only

  • 3-bromopentane only

  • 2-bromopentane and 3-bromopentane

  • 1-bromopentane and 3-bromopentane


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359.

ethylene can be separated from acetylene by passing the mixture through

  • fuming H2SO4

  • pyrogallol

  • ammoniacal Cu2Cl2

  • charcoal powder


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360.

In the compound HCC-C(CH3)=CH2 the hybridisation of C-2 and C-3 carbons are respectively

  • sp3 and sp3

  • sp2 and sp3

  • sp2 and sp

  • sp3 and sp


C.

sp2 and sp

C2= 3σ bond  sp2 hybridisationC3= 2σ bond sp hybridisation


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