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Pesticides are chemical compounds which are used to control or kill the pets. Depending upon the types of organism, pesticides are classified as follows:
The poisonous chemicals which are made by humans and used to control or kill the insects are called insecticides.
Example: DDT (Dichloro Diphenyl Trichloroethane)
BHC ( Benzene Hexachloride)
Example: Malathion, Parathion
Those insecticides derived from minerals are called inorganic insecticides.
Example: calcium arsenate, lead arsenate
DDT is the chlorine containing insecticides and Malathion is the phosphorus containing insecticide.
The poisonous chemical substances used to destroy or kill harmful insects are called insecticides. The use of insecticides is discouraged because it kills the useful insects like honey bee and makes chemical pollution in environment.
'Baygon' is the name of a carbamet insecticide. Insecticides are not good for health. Their use is harmful to other animals, birds and humans. But, without their use, it is not possible to grow the required amount of food. So, "the use of insecticide is not an interest, but an obligation".
The inorganic insecticides are prepared from minerals. The uses of inorganic insecticides are:
a. The help to destroy the annoying insects.
b. They help to control several diseases.
DDT- Dichlorodiphenyl Trichloroethane BHC- Benzene Hexachloride
The plastics that does not become soft on heating and cannot be remolded into desired shapes is ______.
______ are used for controlling insects.
Herbicides is used for destroying ______.