What is D.D.T. among the following?

Question

Question

This question was previously asked in

HP TGT (Non-Medical) TET 2019 Official Paper

Answer 1

Concept:

D.D.T. (Dichloro Diphenyl Trichloroethane) is a non-biodegradable waste that can not be changed into harmless products.
Therefore it has been banned from the use in most countries.
These wastes are the major pollutants of the environment.
DDT does not occur naturally and is synthesised by consecutive Friedel–Crafts reactions between chloral (CCl3CHO) and two equivalents of chlorobenzene (C6H5Cl), in the presence of an acidic catalyst.

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Hence, we can conclude that D.D.T. is Non-biodegradable pollutant.

Additional Information

All the waste materials produced by the various activities of man and animals are poisonous to some extent and can be divided into two groups:
- Biodegradable wastes
- Non-biodegradable wastes

Wastes	Importance
Biodegradable wastes	Those waste materials which can be broken down to non-poisonous substances in nature in due course of time by the action of the micro-organisms like the certain bacteria are called biodegradable wastes. Cattle dung and compost are common examples of it. These wastes commonly do not pollute the environment. They pollute only when their amount is large which can not be degraded into harmless substances in nature at the right time.
Non-biodegradable wastes	The waste materials which can not be broken down into non-poisonous or harmless substances in nature are called non-biodegradable wastes. D.D.T. (Dichloro Diphenyl Trichloroethane), plastics, synthetic fibres, etc are examples of it. D.D.T. (Dichloro Diphenyl Trichloroethane) is a non-biodegradable waste that can not be changed into harmless products. Therefore it has been banned from the use in most countries. These wastes are the major pollutants of the environment.