DDT, BHC and Malathion belong to a class of compounds called____________
Insecticides
Fungicides
Weedicides
Rodenticides
Mixing of soil with manure is called____________
Manuring
levelling
Ploughing
Tilling
Curd and cheese are prepared from ______________
Rice
Milk
Wheat
Nuts
Cotton is cultivated in _____________ soil
Red
Desert
Sandy
Black clayey
__________bacteria living in the roof nodules of the leguminous plants
Aerobic
Anaerobic
Symbiotic
None of these
Laterite soil has ___________colour.
Blue
Greyish-brown
Black
