ശരീരത്തിന് ഏറ്റവും ആവശ്യം വേണ്ട ധാതു മൂലകങ്ങൾ എത്ര എണ്ണം?
A13
B16
C19
D27
A13
B16
C19
D27
Related Questions:
During nitrogen fixation, ammonia is first oxidized to nitrite which is further oxidized to nitrate and the reactions are given below
2NH3+302 → 2NO2-+ 2H+ +2H20.....(i)
2NO2-+02→ 2NO3- ......(ii)
The reaction (i) is facilitated by the action of: