Agriculture MCQs

2794 MCQs  (Page 241 of 280)

Fe is trivalent in which of the chemical compound:
A. Fe (no3)3
B. Fe2 (no3)3
C. Fe3 (no2)
D. None of these
The virus infecting bacteria is called:_________?
A. Bacteroid
B. Bacteriophage
C. Bacterin
D. All of these
What are diatoms?
A. Soil fungi
B. Soil algae
C. Soil bacteria
D. None of these
What is the pH of calcareous soils?
A. 8.0-8.5
B. 7.0-7.5
C. 8.5-9.0
D. 6.5-7.5
Potassium (K) fixation capacity is maximum in:____________?
A. Vermiculite
B. Illite
C. Montmorillonitic
D. Amorphous clay
What is the formula of urea?
A. Co (nh2)2
B. Nh2-co-nh-co-nh2
C. (nh4)2co3
D. None of these