Which of the following pair is not correctly

Which type of soil has swelling and shrinking property? 

Among the following is a example of biennial weed ?

Equivalent acidity of Ammonium sulphate fertilizer is-

Annidation is referred as:

The minimum isolation distance for production of certified seed of composite Maize is -

Cauliflorous bearing habit i.e fruits are borne on trunk and branches, is found in which horticultural crop? 

Riverine soil contributes to the total land area of the country…………………………

Avikalin is a breed of -

One ha cm water equals to -

Ginning term is related to which of the following crop?