? = 54.89 × 270.08 ÷ 135.17 + 464.35 ÷ 29.03

Irrigation method that is suitable for undulating topography is ___

The Chargaff’'s rule (1: 1 stoichiometric ratio of purine and pyrimidine bases) is not followed in organisms having as genetic material.

Which of the following is not a basic principle of food preservation?

Khaira disease of rice is due to

The scientific study of diseases in plants, identification of the pathogen and their management is known as

Critical level for hot water extractable B (ppm) in soil is

During germination, seeds absorb water by 

Which is the capital of Uttarakhand? 

Petroleum is a mixture of-