Question

The reaction between chloral and chlorobenzene in \[{{H}_{2}}S{{O}_{4}}\] yields
A.Chloretone
B.p,p-dichlorodiphenyltrichloroethane
C.o-chlorobenzotrichloride
D.chlorophenyl chloride.

Answer 1

Hint: We know that DDT is Dichlorodiphenyltrichloroethane. It is a colorless, tasteless, and odorless crystalline chemical compound, an organochlorine. We have to know that DDT has similar structure to the insecticide methoxychlor and the acaricide dicofol. It is hydrophobic and insoluble in water whereas good solubility in organic solvents fats and oils. DDT is not naturally available.

Complete answer:
We can formulate DDT in multiple forms, including solutions in xylene or petroleum distillates, aerosols, water-wettable powders, emulsifiable concentrates, granules, smoke candles and charges for vaporizers and lotions. We can prepare DDT by consecutive Friedel–Crafts reactions between one mole of chloral and two equivalents of chlorobenzene using an acidic catalyst. Let us know that Chloral is trichloroacetaldehyde and the acid catalyst we use in the synthesis of DDT is sulfuric acid. So, chlorobenzene reacts with chloral in the presence of concentrated solution of sulfuric acid to produce Dichlorodiphenyltrichloroethane (DDT).The reaction between chloral and chlorobenzene in \[{{H}_{2}}S{{O}_{4}}\]yields p,p-Dichlorodiphenyltrichloroethane which is also known as DDT. It is an insecticide against malaria.
Therefore, correct answer is option B.

Note:
Remember that we have to know that Pure DDT is a colourless, crystalline solid, which has a melting point of \[109{}^\circ C.\]The commercial product that is generally \[65\] to \[80\] percent active compound, along with related substances, is an amorphous powder, which contains a lower melting point. We can apply DDT as dust or by spraying its aqueous suspension.