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

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

A. HCHO                             B. CH₃COCH₃
C.PhCOCH₃                         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

           

• 

• 

• 

• 

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

Aniline is resonance hybrid of _ structures.

• 1

• 3

• 5

• 7

The major product (P) in the following reaction is

CH₃CH₂I $\stackrel{\mathrm{NaCN}}{\to }$ (A) $\underset{\mathrm{Partial} \mathrm{hydrolysis}}{\overset{{\mathrm{OH}}^{-}}{\to }}$ (B) $\stackrel{{\mathrm{Br}}_2/ \mathrm{KOH}}{\to }$ (C)

• CH₃CH₂.NH₂

• CH₃CH₂.CO.NHBr

• CH₃.CH₂.COONH₄

• CH₃.CH₂.CO.NBr₂

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)

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

The final product 'C' in the above reaction is

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.