MolSynapsequestion bank

MolSynapse / Question bank / Haloalkanes and Haloarenes / Polyhalogen compounds

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3hx143

Which statements about DDT and BHC are correct?

ADDT is obtained from two molecules of chlorobenzene and one molecule of chloral with conc. $H X_{2} SO X_{4}$
BDDT is readily biodegradable and does not accumulate in fatty tissues
CBHC is prepared from benzene and $Cl X_{2}$ with $FeCl X_{3}$ catalyst
DBHC ( $C X_{6} H X_{6} Cl X_{6}$ ) is formed by addition of chlorine to benzene in sunlight

Answer: A, D

DDT preparation and BHC formation by radical addition of three

Cl X_{2}

to benzene in sunlight are correct. DDT is not metabolised easily and accumulates in fatty tissue. With

FeCl X_{3}

,

Cl X_{2}

gives substitution, i.e. chlorobenzene, not BHC.

Practice Haloalkanes and Haloarenes More on Polyhalogen compounds

Previous questionNext question

More questions on Polyhalogen compounds

Acetone (5.8 g) is treated with excess I2 and aqueous NaOH and gives iodoform with 80 percent yield. Use CH3COCH3 + 3I2 + 4NaOH -> CHI3 + CH... JEE Advanced level
Which of the following give a yellow precipitate of iodoform on warming with I2 and aqueous NaOH? JEE Advanced level
Which statements about chloroform and carbon tetrachloride are correct? JEE Advanced level
Which statements about chlorofluorocarbons are correct? JEE Advanced level
Assume that 1 mol of CHCl3 and 1 mol of CCl4 are both hydrolysed completely by excess aqueous KOH (chloroform to HCOOK, carbon tetrachloride... JEE Advanced level
An organic compound X, C4H8O, gives a yellow precipitate with I2/NaOH and the sodium salt obtained in solution contains three carbon atoms. ... JEE Advanced level