In the presence of ether , 2-choloropropane reacts with sodium and form :

• n-hexane

• 2 , 3 - dimethyl butane

• n - hexene

• CH₃$—$CH$=$CH₂

The product of reaction between chloroform and acetone is used as :

• insecticide

• analgesic

• hypnotic

• war gas

The product formed by the reaction between acetylene and HOCl :

• ethylene chloride

• vinyl chloride

• dichloro acetaldehyde

• ethyledene chloride

R-X $\stackrel{Reagent}{\to }$ R-NO₃ , for the completion of the reaction suitable reagent is :

• NO₂

• NaNO₂

• AgNO₂

• NaNO₂ + dil. HCl

The use of CCl₄ as fire extinguisher depends on the fact that :

• it is an inorganic compound

• it is an organic compound

• its vapour is much heavier than air and non-combustible

• it is a compound of chlorine

Tertiary alkyl halides are practically inert towards substitution by S_N2 mechanism because of :

• steric hindrance

• inductive effect

• instability

• insolubility

Chloroform , on exposing to air and sunlight produce :

• chloropicrin

• phosgene

• carbon tetrachloride

• benzene

728.

Which of the following does not give nitroalkane?

• CH₃-N(CH₃)-CH₃ $\stackrel{{\mathrm{KMnO}}_4}{\to }$

• C₂H₅I $\stackrel{\mathrm{alc}. {\mathrm{AgNO}}_2}{\to }$

• CH₃ - CH₃ $\stackrel{\mathrm{Fuming} {\mathrm{HNO}}_3}{\to }$

• Both (a) and (b)

Which of the following is true for an ideal solution?

• $∆$H_(mix) = 0

• $∆$S_(mix) = 0

• $∆$G_(mix) = 0

• None of these

Boiling point of benzene is 353.23 K. When 1.8 g of non-volatile solute is dissolved in 90 g of benzene. Then boiling point is raised to 354.11 K. Given K_b (benzene) = 2.5 kg mol^-1. The molecular mass of non-volatile substance is

• 58 g mol^-1

• 120 g mol^-1

• 116 g mol^-1

• 60 g mol^-1