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 Multiple Choice QuestionsMultiple Choice Questions

431.

In the chemical reactions,


the compounds 'A' and 'B' respectively are

  • nitrobenzene and fluorobenzene

  • phenol and benzene

  • benzene diazonium chloride and flurobenzene. 

  • benzene diazonium chloride and flurobenzene. 

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432.

Which of the following compounds will the significant amount of meta product during mono-nitration reaction?


C.

(a) Nitration reactions take place in presence of concentrated HNO3+ concentrated H2SO4.
(b) Aniline acts as a base. In presence of H2SO4, its protonation takes place and anilinium ion is formed
(c)Anilinium ion is a strongly deactivating group and meta directing in nature so it gives meta nitration product in a significant amount.

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433.

The hydrocarbon which can react with sodium in liquid ammonia is

  • CH3CH2CH2C≡CCH2CH2CH

  • CH3CH2C≡CH

  • CH3CH=CHCH3

  • CH3CH=CHCH3

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434.

In the chemical reaction, CH3CH2NH2 + CHCl3 + 3KOH → (A) + (B) + 3H2O, the compounds (A) and (B) are respectively

  • C2H5CN and 3KCl 

  • CH3CH2CONH2 and 3KCl

  • C2H5NC and K2CO3

  • C2H5NC and K2CO3

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435.

Which one of the following is the strongest base in aqueous solution?

  • Trimethylamine

  • Aniline

  • Dimethylamine

  • Dimethylamine

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436.

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

  • Hinsberg method

  • Hofmann method

  • Wurtz reaction

  • Wurtz reaction

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437.

Amongst the following the most basic compound is

  • benzylamine

  • aniline

  • acetanilide

  • acetanilide

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438.

Which one the following does not have sp2 hybridized carbon?

  • Acetone

  • Acetamide

  • Acetonitrile

  • Acetonitrile

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439.

Consider the acidity of the carboxylic acids

  • PhCOOH

  • p – NO2C6H4COOH

  • o – NO2C6H4COOH

  • o – NO2C6H4COOH

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440.

Which of the following is the strongest base?

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