Haloalkanes and Haloarenes

Trichloroacetaldehyde, CCl3CHO reacts with chlorobenzene in presence of sulphuric acid and produces

1. [figure]
2. [figure]
3. [figure]
4. [figure]

In an SN2 substitution reaction of the type R-Br + Cl- DMF R-Cl + Br- which one of the following has the highest relative rate?

1. CH3- CH3 | CH3 |C-CH2Br
2. CH3CH2Br
3. CH3CH2CH2Br
4. CH3- CH3 |CH-CH2Br

Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?

1. Ethyl chloride
2. Isopropyl chloride
3. Chlorobenzene
4. Benzyl chloride

Which of the following is least reactive in a nucleophilic substitution reaction?

1. (CH3)3C-Cl
2. CH2=CHCl
3. CH3CH2Cl
4. CH2=CHCH2Cl

Chloropicrin is obtained by the reaction of

1. steam on carbon tetrachloride
2. nitric acid on chlorobenzene
3. chlorine on picric acid
4. nitric acid on chloroform

Reactivity order of halides for dehydrohalogenation is

1. R-F > R-Cl > R-Br > R-I
2. R-I > R-Br > R-Cl > R-F
3. R-I > R-Cl > R-Br > R-F
4. R-F > R-I > R-Br > R-Cl

An organic compound A (C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is

1. t-butyl chloride
2. s-butyl chloride
3. iso-butyl chloride
4. n-butyl chloride