Advertisements
Advertisements
प्रश्न
Name the chemicals which help in increasing food production.
Advertisements
उत्तर
Chemicals which help in increasing food production are fertilisers like urea, sodium nitrate, potash, ammonium phosphate, calcium nitrate, etc. Pesticides like aldrin, malathion which are used to kill pests. Insecticides like D.D.T., B.H.C. fungicides like sulphur, Bordeaux mixture, etc.
APPEARS IN
संबंधित प्रश्न
Give two examples of the following substance.
Medicines
Name the scientists who discovered the following:
Oxygen
Name the scientists who discovered the following:
Elements
Fill in the blank:
L.P.G. is used for ___________
Fill in the blank:
Inert gases were discovered by ___________
Write True or False against the following statement.
D.D.T. is an important fertiliser:
Choose the correct alternative from the choices given below for the following statement:
Mortar is used as a
Choose the correct alternative from the choices given below for the following statement:
The chemicals prescribed by a doctor in the treatment of infectious diseases are called
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
