What is the composition of the biogas?
Methane, carbon dioxide, oxygen etc.
Methane, carbon dioxide, hydrogen, nitrogen dioxide etc.
Methane, carbon dioxide, hydrogen etc.
Methane, carbon dioxide, sulphur dioxide etc.
What is required for nitrogen fixation by Rhizobium
Most common pesticides used in the crops are
Bordeaux mixture is named after
Nobel prize was awarded to Paul Muller on the discovery of which of the following pesticides
'Himgiri' developed by hybridization and selection for disease resistance against rust pathogens is a variety of