Haloalkanes and Haloarenes

The reaction of toluene with Cl2 in presence of FeCl3 gives X and reaction in presence of light gives Y. Thus, X and Y are

1. X = Benzal chloride, Y = o-chlorotoluene
2. X = m-chlorotoluene, Y = p-chlorotoluene
3. X = o- and p-chlorotoluene, Y = Trichloromethyl benzene
4. X = Benzyl chloride, Y = m-chlorotoluene

Which one is most reactive towards SN1 reaction?

1. C6H5CH(C6H5)Br
2. C6H5CH(CH3)Br
3. C6H5C(CH3)(C6H5)Br
4. C6H5CH2Br

The correct order of increasing reactivity of [figure] C–X bond towards nucleophile in the following compounds is

1. I < II < IV < III
2. II < III < I < IV
3. IV < III < I < II
4. III < II < I < IV

Which of the following reactions is an example of nucleophilic substitution reaction?

1. 2RX + 2Na R-R + 2NaX
2. RX + H2 RH + HX
3. RX + Mg RMgX
4. RX + KOH ROH + KX

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