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Question

Assertion :Different gases at the same conditions of temperature and pressure have same root mean square speed. Reason: Average KE of a gas is directly proportional to temperature in Kelvin.
  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Assertion is incorrect but Reason is correct

A
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
B
Assertion is incorrect but Reason is correct
C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
Solution
Verified by Toppr

VRMS=3RTM
For different gases, RMS velocities are different because of different molecular weights at same temperature. So, assertion is incorrect.

KEav=3RT2

KEavT

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