MCQ
Negative ER indicates that redox couple is:
- AWeaker reducing agent than H+/ H, couple.
- BStronger reducing agent than H+/ H, couple.
- CStronger oxidising agent than H+/ H, couple.
- DNone of the above.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

If $Y$ gives precipitate with $AgNO_3 ,$ then $Z$ does not undergo reaction with

$(I)$ $2HI(g) \rightleftharpoons {H_2}(g)\, + \,{I_2}(g)$
$(II)$ $2N{H_3}(g) \rightleftharpoons {N_2}(g)\, + \,3{H_2}(g)$
$(III)$ $2NO(g) \rightleftharpoons {N_2}(g)\, + \,{O_2}(g)$
$(IV)$ $PC{l_5}(g) \rightleftharpoons PC{l_3}(g)\, + \,C{l_2}(g)$