A. Nitrogen 

B. Phosphorous 

C. Potassium 

D. None of these

A. Nitrification

B. Denitrification

C. N fixation

D. Volatilization

A. FYM

B. Gree manure

C. Gypsum

D. All of these

A. Nitrogen

B. Phosphorus

C. Potassium

D. None of these

A. B-horizon

B. C-horizon

C.  A-horizon

D. surface of soil

A. Sub soil 

B. top soil

C. Bedrock 

D. None  of these

A. Top soil

B. Sub soil 

C. Bedrock 

D. None of these

A. Vegetaion and topography         

B. Time, topography and climate

C. Time and vegetation     

D. Vegetation and climate

A. Acidic

B. Alkaline 

C. Both a and b

D. Calcareous 

A. River delta 

B. forests 

C. Hills 

D. Deserts