MCQ
de-Broglie equation is
- A$n\lambda = 2d\sin \theta $
- B$E = hv$
- C$E = m{c^2}$
- ✓$\lambda = \frac{h}{{mv}}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Which one of the following options represents identical molecules?

$\mathrm{Cr}_2 \mathrm{O}_7^{2-}+\mathrm{XH}^{+}+\mathrm{Ye}^{-} \rightarrow 2 \mathrm{~A}+\mathrm{ZH}_2 \mathrm{O}$
$\mathrm{X}, \mathrm{Y}, \mathrm{Z}$ and $\mathrm{A}$ are respectively are:
