KVPY SX SB Exam 2016 Question Paper

Question : 46 of 120

Marks: +1, -0

The ratio of root mean square velocity of hydrogen at 50 K to that of nitrogen at 500 K is closest to

Solution:

\V_\rms=√{{3RT}/M}

(\V_\rms)_{H_2}/(\V_\rms)_{O_2}

=√{{3×r×50}/2}/√{{3×r×500}/28}=1.18

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