experts please give me a clear explanantion of the solution of this problem

Dear Student,

N₂ + 3H₂ ---------> 2NH₃

Number of moles of N₂ = 50kg X 1000g/1kgx1mole/28g

 = 17.86 x 10² mol

Number of moles of H₂ = 10kg x1000g/1kgx 1mol/2.016g

 =  4.96 x 10³ mol

According to the balanced reaction :

17.86 x 10² mol of N₂ will react with = 3/1 x 17.86 x 10²

 = 5.36 x 10³ mol

since number of moles of H₂ are  4.96 x 10³

Therefore dihydrogen is the limiting reagent.
Regards