Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of

Comparatively higher pressure drop

High cost of the high pressure vessel used for the reactor

Chances of entrainment and disturbance of catalyst bed

Multistage operation (as in the case of catalytic oxidation of SO₂)

1.	Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of
A.	Comparatively higher pressure drop
B.	High cost of the high pressure vessel used for the reactor
C.	Higher pumping cost
D.	Chances of entrainment and disturbance of catalyst bed
Answer» C. Higher pumping cost