Assertion :Different gases at the same conditions of temperature and pressure have same root mean square speed. Reason: Average $K E$ of a gas is directly proportional to temperature in Kelvin.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is incorrect but Reason is correct

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D Assertion is incorrect but Reason is correct
$V_{R M S} = \sqrt{\frac{3 R T}{M}}$
For different gases, $R M S$ velocities are different because of different molecular weights at same temperature. So, assertion is incorrect.

$K E_{a v} = \frac{3 R T}{2}$

$K E_{a v} \propto T$
Option D is correct.

Suggest Corrections

Similar questions

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

H e

Assertion: Be and Al have similar properties.

Reason: $B e^{2 +}$ and $A l^{3 +}$ have nearly the same charge/volume ratios and similar polarising power.

{2n}^{2}

{SiO}_{2}

{CaCO}_{3}

CaO

{CaCO}_{3}

{SiO}_{2}

Join BYJU'S Learning Program