A) \[4\]
B) \[2\]
C) \[\frac{7}{8}\]
D) \[\frac{1}{4}\]
Correct Answer: C
Solution :
\[\frac{u_{{{H}_{2}}}^{2}}{u_{{{N}_{2}}}^{2}}=\frac{\frac{3R{{T}_{1}}}{{{M}_{1}}}}{\frac{3R{{T}_{2}}}{{{M}_{2}}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\times \frac{{{M}_{1}}}{{{M}_{2}}}=\frac{50}{800}\times \frac{28}{2}=\frac{1400}{1600}=\frac{7}{8}.\]
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