Which of the following fibres is not made up of polyamides ?

• Wool

• Natural silk

• Artificial silk

• Nylon

The high oxidising power offluorine is due to :

• high electron affinity

• high heat of dissociation and low heat of hydration

• high heat of hydration and low heat of dissociation

• high heat of hydration and high heat of dissociation

Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and thenheated with cuprous bromide. The reaction mixture so formed contains

• mixture of o- and m-bromotoluenes

• mixture of o- and p-bromotoluenes

• mixture of o- and p-dibromobenzenes

• mixture of o- and p-bromoanilines

Identify the 'C' in the reaction :

RNH₂ $\stackrel{{\mathrm{HNO}}_2}{\to }$ A + B + C$\uparrow$

• NH₃

• O₂

• N₂

• CO₂

The reaction of an organic compound with ammonia followed by nitration of the product gives a powerful explosive called ROX.The organic compound is

• phenol

• toluene

• glycerine

• formaldehyde

CH₃Br + KCN (alco.) $\to$ X $\underset{\mathrm{Na} + {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\overset{\mathrm{Reduction}}{\to }}$ Y

What is Y in the series ?

• CH₃CN

• C₂H₅CN

• C₂H₅NH₂

• CH₃NH₂

In the following sequence of the reactions, what is D ?

• Primary amine

• An amide

• Phenyl isocyanate

• A chain lengthed hydrocarbon

Number of isomeric primary amines obtained from C₄H₁₁N are :

• 3

• 4

• 5

• 6

289.

Which of the following amines will not give N₂ gas on treatment with nitrous acid (NaNO₂ + HCl)?

• C₂H₅NH₂

• CH₃NH₂

• (CH₃)₂CH-NH₂

• All will give N₂

Order of hydrolysis for the following :

• RCOCl

• RCOOR

• RCONH₂

• (RCO)₂O