A certain reaction ocuurs in two steps as
(I) `2SO_(2(g))+2NO_(2(g)) to 2SO_(3(g))+2NO_((g))`
`(ii) 2NO_((g) ) +O_(2) (g) to 2NO_(2(g))`
In the reaction ,______.

Options

A. `NO_(2(g))` is intermediate
B. `NO_((g))` is intermediate
C. `NO_((g))` is catalyst
D. `O2_((g))` is intermediate

Answer

B

Explanation

As, No is formed during reaction and again consumed.