The ratio of the number of English books to Hindi books

Ozone layer which absorbs and scatters the solar ultraviolet radiation is present in which layer of atmosphere?

Which of the following is a common symptom of plant disease?

Which was first Indian dwarf amber grained variety of wheat made from Sonara 64 by γ –gamma rays

Most predominant cropping system in India is

Rice is believed to be originated from:

Name the chemical which is used for protoplast fusion

Who is known as the father of economics?

Soils with Bulk density 1.325g/cc and Particle density of 2.65 g/cc consist of a total porosity of:

Chemosterilants are the chemical compound used to control economically destructive or disease-causing pests by causing

Weeds which are of no use and does not have any economic value are known as