રસાયણિક પ્રકિયા માટે  \(\mathrm{N}_{2}(\mathrm{g})+3 \mathrm{H}_{2}(\mathrm{g}) \rightleftharpoons 2 \mathrm{NH}_{3}(\mathrm{g})\) સાચો વિકલ્પ કયો છે ?

1. A  \(-\frac{1}{3} \frac{\mathrm{d}\left[\mathrm{H}_{2}\right]}{\mathrm{dt}}=-\frac{1}{2} \frac{\mathrm{d}\left[\mathrm{NH}_{3}\right]}{\mathrm{dt}}\)
2. B \(-\frac{\mathrm{d}\left[\mathrm{N}_{2}\right]}{\mathrm{dt}}=2 \frac{\mathrm{d}\left[\mathrm{NH}_{3}\right]}{\mathrm{dt}}\)
3. C \(-\frac{\mathrm{d}\left[\mathrm{N}_{2}\right]}{\mathrm{dt}}=\frac{1}{2} \frac{\mathrm{d}\left[\mathrm{NH}_{3}\right]}{\mathrm{dt}}\)
4. D \(3 \frac{\mathrm{d}\left[\mathrm{H}_{2}\right]}{\mathrm{dt}}=2 \frac{\mathrm{d}\left[\mathrm{NH}_{3}\right]}{\mathrm{dt}}\)