Flow of nitrogen in soil due to:_________?

A. Diffusion
B. Interception
C. Mass flow
D. None of the above

Availability of Phosphorus is maximum at:__________?

A. Neutral
B. Alkaline
C. Acidic
D. None of these

A & B horizon is called as:________?

A. Regolith
B. Poly-pedon
C. Series
D. None of the above

Fossils are found in which type of rock:

A. Sedimentary rock
B. Metamorphic rock
C. Stratified rock
D. Both a & c

The highest Cation Exchange Capacity is in:_________?

A. Sandy soil
B. Clay soil
C. Gravely soil
D. Both a & c

Chlorophyll contain which mineral nutrient?

A. Ca
B. Mg
C. S
D. P

The horizontal flow of water in irrigation channel or canal leading to water loss is called as:_________?

A. Infiltration
B. Percolation
C. Seepage
D. All of these

Maize can grow very well in the soils pH ranging from:__________?

A. 3.5-4.5
B. 6-8.5
C. 5.5-7.5
D. None of these

Green manures are mostly used as a source of:_________?

A. Zink
B. Nitrogen
C. Oxygen
D. None of these

Sprinkler irrigation is suitable, where soil has:_________?

A. Clayey texture
B. Undulating topography
C. Loamy texture
D. All of these