Agriculture MCQs

2794 MCQs  (Page 147 of 280)

Na and k can be determined by the use of____________________?
A. Hydrometer
B. Flame photometer
C. Spectrophotometer
D. All the above
Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
A. Agregation of soil particles
B. Cementing of soil particles
C. Dispersion of soil particles
D. All the above
Chromium (Cr) is a____________________?
A. Macro element
B. Secondary element
C. Heavy metal
D. Free element
The little clay mineral is_____________________?
A. Non-expending
B. Expending
C. None or little expending
D. None of the above
The net reaction of photosynthesis is_____________________?
A. Co2 + h2o light o2 + (ch3o)
B. Caco3 + 2hcl cacl2 h2o+co3
C. ((ch2o) + o2 co2 + h2o)
D. None of the above