A. Organic soils
B. Peat soils
C. Muck soils
D. All of these
A. 20 mg of ca2+
B. 12 mg of Mg2+
C. 9 mg of Al3+
D. All of the above
A. Photoperiodism
B. Photosynthesis
C. Photophosphorrylation
D. None of the above
A. Disintegration
B. Sedimentation
C. Decomposition
D. both A & C
A. Starch granules swell rapidly and lose birefringence
B. Starch granules do not swell rapidly and lose birefringence
C. Starch granules collide frequently causing a reduction in viscosity
D. Both a & b
A. Riboflavin
B. Niacin
C. Pyrodoxin
D. None of above
A. Alcohols
B. Fatty acids
C. Aldehyde
D. Ketenes