A. Nitrogen
B. Phosphorous
C. Potassium
D. Calcium
A. Triple superphosphate
B. Tricresyl phosphate
C. Fluorapatite
D. Superphosphate
A. Stems & leaves during early stage of plant growth
B. Starches of potatoes & grains
C. Sugar of fruits & vegetables
D. Fibrous materials of plants
A. Its activity declines rapidly, if heated to above 520°C
B. It decomposes ammonia
C. It gets oxidised above 500°C
D. None of these
A. P
B. P2
C. P3
D. P4
A. Nitrogen
B. Phosphorous
C. Potassium
D. Carbon
A. Natural gas as a source of hydrogen
B. Natural gas as heating medium
C. Coal gas as a source of hydrogen
D. Coal gas as heating medium