The transfer of mineral from top soil to sub soil

Which of the following spice is popularly known as queen of spices 

The ratio of actual vapour pressure to the saturated pressure is known as:

The term Hidden Hunger refers to:

The major component of honey is-

Botanical name of Date palm is -

What value of RSC (Residual Sodium Carbonate) is unsuitable for irrigation?

Which of the following is NOT a pest of paddy plant?

The bacterial disease, citrus greening is spread by _____ vector. 

India’s first greenfield grain based ethanol production plant inaugurated in ………………….

Isabgol is propagated by