MCQ
The strongest reducing agent amont the following is:
- A$\mathrm{NH}_3$
- B$\mathrm{SbH}_3$
- ✓$\mathrm{BiH}_3$
- D$\mathrm{PH}_3$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

(image) $\frac{{conc.\,HN{O_3}}}{{conc.\,{H_2}S{O_4}}}X$
the structure of the major product $'X'$ is