Important Questions of Amines Chemistry | Zigya

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451.

An organic compound X is oxidised by using acidified K2Cr2O7. The product obtained reacts with phenyl hydrazine, but does not answer silver mirror test. The possible structure of X is

  • CH3COCH3

  • (CH3)2CHOH

  • CH3CHO

  • CH3CH2OH


452.

The increasing order of the rate of HCN addition to compound A-D is

A. HCHO                             B. CH3COCH3
C.PhCOCH                        D. PhCOPh

  • A< B < C < D

  • D< B< C< A

  • D < C < B < A

  • C < D< B< A


453.

In a set of reactions m - bromobenzoic acid gave a product D . Identify the product D

           


454.

If 'A' is C2H5NH2, 'B' is (C2H5)NH, 'C' is (C2H5)3N, then order of solubility in water is

  • A >B > C

  • B < A <C

  • C < B <A

  • C > B <A


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455.

Aniline is resonance hybrid of _ structures.

  • 1

  • 3

  • 5

  • 7


456.

The major product (P) in the following reaction is

CH3CH2NaCN (A) Partial hydrolysisOH- (B) Br2/ KOH (C)

  • CH3CH2.NH2

  • CH3CH2.CO.NHBr

  • CH3.CH2.COONH4

  • CH3.CH2.CO.NBr2


457.

Amine is not formed in the reaction

(i) hydrolysis of RCN
(ii) reduction of RCH = NOH
(iii) hydrolysis of RNC
(iv) hydrolysis of RCONH2

  • (i), (ii) and (iv)

  • (i) and (iv)

  • (ii) and (iii)

  • (i), (ii) and (iii)


458.

How many sigma and pi-bonds are there in the molecule of dicyanoethene (CN-CH =CH-CN) ?

  • 3 sigma and 3 pi

  • 5 sigma and 2 pi

  • 7 sigma and 5 pi

  • 2 sigma and 3 pi


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459.

The final product 'C' in the above reaction is


460.

Select the correct statement(s).

  • LiAlH4 reduces methyl cyanide to methyl amine.

  • Alkaline nitrile has electrophilic as well as nucleophilic centres

  • Saponification is a reversible reaction.

  • Alkaline hydrolysis of methane nitrile forms methanoic acids.


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