In Gattermann reaction, a diazonium group is replaced by X u

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 Multiple Choice QuestionsMultiple Choice Questions

541.

In the following reaction, X and Y are respectively

CH3COOH + NH3 → X  Y + H2O

  • CH3CONH2, CH4

  • CH3COONH4, CH3CONH2

  • CH3CONH2, CH3COOH

  • CH3NH2, CH3CONH2


542.

Which one of the following is the molecular formula of a tertiary amine ?

  • C2H7N

  • C3H9N

  • CH5N

  • CH3N


543.

Aniline is not the major product in one of the following reactions. Identify that reaction

  • C6H5OH + NH3 300°C ZnCl2

  • C6H5NO2 + Zn powderalcoholic KOH

  • C6H5Cl +NH3 Cu2O 200°C high pressure

  • C6H5NO2 + 6(H) HClFe +H2O


544.

Which one of the following compounds forms a quaternary salt on reacting with excess methyl iodide?

  • C2H5OCH3

  • (CH3)2CHOC2H5

  • C6H5NH2

  • C6H5NO2


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545.

Nitrobenzene on reduction with zinc and NH4Cl gives

  • azobenzene

  • aniline

  • hydrazobenzene

  • N-phenyl hydroxylamine


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546.

In Gattermann reaction, a diazonium group is replaced by X using Y. X and Y are-

  • X - ClY - Cu/ HCl 

  • X - Cl ; Y - CuCl2/ HCl

  • X - ClY - CuCl2/ HCl

  • X - Cl2Y - Cu2O/ HCl


A.

X - ClY - Cu/ HCl 

In Gatterman reaction, X and Y  are- Cl and Cu/ HCl respectively. 


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547.

What is the product obtained in the reaction of acetaldehyde with semicarbazide ?

  • H3C-CH=N-NHCONH2

  • H3C-CH=N-NH2

  • H3C-CH=N-OH

  • H3C-CCH3=N-NH-CO-NH2


548.

Yellow dye can be prepared by a coupling reaction of benzene diazonium chloride in acidic medium with X. Identify X from the following.

  • Aniline

  • Phenol

  • Cumene

  • Benzene


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549.

Acid hydrolysis of methyl isocyanide gives

  • CH3NH2 + HCOOH

  • CH3NH2 + CH3COOH

  • CH3NH2 + CH3CH2COOH

  • CH3NH2 + (CH3)2CHCOOH


550.

Mark the correct statement.

  • Methyl amine is acidic.

  • Methyl amine is less basic than NH3.

  • Methyl amine is a stronger base than NH3.

  • Methyl amine forms salts with bases.


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