421.

Write the structures of the main products of the following reactions:

Give a simple chemical test to distinguish between Aniline and N, N-dimethylaniline.

Arrange the following in the increasing order of their pK_b values:
C₆H₅NH₂, C₂H₅NH₂, C₆H₅NHCH₃

In the Hofmann bromamide degradation reaction, the number of moles of NaOH and Br₂ used per mole of amine produced are:

• Four moles of NaOH and two moles of Br₂

• Two moles of NaOH and two moles of Br₂

• Four moles of NaOH and one mole of Br₂

• Four moles of NaOH and one mole of Br₂

In the reaction,


The product E is

On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is

• an alkanol

• an alkaneodiol

• an alkyl cyanide 

• an alkyl cyanide 

Considering the basic strength of amines in aqueous solution, which one has the smallest pK_b value?

• (CH₃)₂NH

• CH3NH2

• (CH₃)₃N

• (CH₃)₃N

A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups presents per molecule of the former compound is 

• 2

• 5

• 4

• 4

An organic compound A upon reacting with NH₃ gives B. On heating B gives C. C in presence of KOH reacts with Br₂ to give CH₃CH₂NH₂. A is

• CH₃COOH

• CH₃CH₂CH₂COOH

• 
• 

Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because

• o–Nitrophenol is more volatile in steam than those of m – and p–isomers

• o–Nitrophenol shows Intramolecular H–bonding

• o–Nitrophenol shows Intermolecular H–bonding

• o–Nitrophenol shows Intermolecular H–bonding