A. Sedimentary 

B. Metamorphic 

C. Igenous 

D. None of these

A. Soil credibility factor    

B. Soil productivity factor

C. Soil leaching factor 

D. Crop management factor

A. 7.5

B. 7

C. 6.5

D. less than 5.5

A. 7

B. 7.5

C.  less than 6.5

D. None of these

A. 0

B. below 7

C. over 7.5

D. None of these

A. 0

B. 6.5-7.5

C. 14

D. above 14

A. 7-14

B. 0-14

C. 0-7

D. None o these

A. Shale

B. Clay stone 

C. Sand stone 

D. None of these

A. Rainfall, soil credibility, slope length. 

B. Rainfall, soil credibility, slope gradient, crop management, erosion control practice

C. Rainfall, wind velocity, crop management    

D. Soil credibility, soil type, crop management

A. N₂O

B. NO

C.  NO₂

D. N₂