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 Multiple Choice QuestionsMultiple Choice Questions

271.

Example of geometrical isomerism is

  • 2-butanol

  • 2-butene

  • butanal

  • 2- butyne


272.

A metal 'M' reacts with N2 to give a compound 'A' (M3N). 'A' on heating at high temperature gives back 'M' and 'A' on reacting with H2O give a gas B. 'B' turns CuSO4 solution blue on passing through it. M and B can be

  • Al and NH3

  • Li and NH3

  • Na and NH3

  • Mg and NH3


273.

Electromeric effect is

  • permanent effect

  • temporary effect

  • resonance effect

  • inductive effect


274.

CH3CH2CH(OH)CH3 and CH3(CH2)2CH2OH can be distinguished by

  • Lucas test

  • Iodoform test

  • Victor-Meyer's test

  • All of the above


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275.

The IUPAC name of 

  • bicyclo (5.5.0) nonane

  • biphenyl

  • spiro (3.5) nonane

  • cyclobutyl cyclohexane


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276.

The compound which does not exhibit geometrical isomerism, is

  • CH3CH=CHCOOH

  • Br-CH=CH-Br

  • C6H5CH=NOH


D.

In case of acyclic compounds, presence of atleast one double bond between two carbon atoms or between carbon and nitrogen atoms is an essential condition for exhibiting geometrical isomerism. In case of cyclic compounds, different groups are present at the same carbon atoms and atleast one same group is present at successive carbon atoms.

Therefore, option d does not satisfy these compounds, thus it does not exhibit geometrical isomerism.


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277.

Which of the following is the most reactlve towards ring nitration ?

  • benzene

  • toulene

  • m-xylene

  • mesitylene


278.

Racemic compound has

  • equimolar mixture of enantiomers

  • 1 : 1 mixture of enantiomer and diastereomer

  • 1 : 1 mixture of diastereomers

  • 1 : 2 mixture of enantiomers


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279.

In which of the following ways does the hydride ion tend to function ?

  • An electrophile

  • A nucleophile

  • A free radical

  • An acid


280.

The following compound differ in

  • configuration

  • conformation

  • structure

  • chirality


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