Which of the following compound gives iodoform test? from Chemis

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 Multiple Choice QuestionsMultiple Choice Questions

241.

Strongest nucleophile is

  • RNH2

  • ROH

  • C6H5O-

  • CH3O-


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242.

Which of the following compound gives iodoform test?

  • CH3CN

  • CH3OH

  • CH3COCH3

  • C6H5OH


C.

CH3COCH3

Compounds containing CH3CO group give the iodoform test. The reaction is

CH3CO-CH3 + 3I2 +NaOH CHI3 + HCOONa + H2O

                                           iodoform (yellow ppt)

Hence, only acetone gives the iodoform test.


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243.

What happens if CCl4 is treated with AgNO3 ?

  • A white ppt. of AgCl will form

  • NO2 will be evolved

  • CCl4 will dissolve in AgNO3

  • Nothing will happen


244.

Identify the end product:


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245.

An asymmetric carbon atom is which

  • attached three atoms or groups are different

  • attached all the atoms or groups are different

  • attached two atoms or groups are different

  • attached all the atoms or groups are the same


246.

Which of the following isomeric heptanes can yield seven different monochlorinated products upon free radical chlorination?

  • 3-methyl hexane

  • 2, 2-dimethyl pentane

  • 2-methyl hexane

  • 2, 3-dimethyl pentane


247.

Which of the following compounds reacts slower than benzene in electrophilic brornination?


248.

Which of the following possess highest melting point?

  • p-dichlorobenzene

  • m-dichlorobenzene

  • o-dichlorobenzene

  • chlorobenzene


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249.

The correct order of reactivity of the three halides ethyl chloride (I), iso-propyl chloride (II) and benzyl chloride (III) in SN1 reaction is :

  • I > II > III

  • III > II >I

  • II > I > III

  • I > III > II


250.

The product P is


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