Nitrogen gases are involved in ________?
A. Sleepy feelings
B. Hair disease
C. Mental disease
D. Acid rains
Particular matter consists of ______?
A. Solid and gases
B. CO2 & N
C. Solid and liquid
D. None of the above
Soil moisture and ET losses are ____?
A. Inversely related
B. Directly related
C. Not related
D. Occasionally related
The salinity can be reduced by the application of ______?
A. Lime
B. Sulphuric acid
C. Urea
D. All the above
The most abundant metal in the earth’s crust and toxic to plants in low concentration is ____?
A. Mo
B. Al
C. Fe
D. All the above
Point of zero change means ______?
A. All the covalent bonds
B. Zero charge at surface
C. All are ionic bond
D. None of the above
Part of soil which is in contact with root surface is called _____?
A. Rhizoshpere
B. Lithoshpere
C. Atmoshpere
D. None of the above
Examples of macrobiota are ________?
A. Enchytrids
B. Fungus
C. Bacteria
D. Plants
Which bacteria convert nitrite to nitrate _______?
A. Frankia
B. Nitrobacter
C. Pseudomonas
D. None of the above
In flood rice, snail feed on bacteria called ----------?
A. Helix
B. Limnea
C. Azolla
D. None of the above
Nice efforts thanks