Assertion :Carbon dioxide has greater value of root mean square velocity $u_{r} m s$ than carbon monoxide. Reason: $u_{r} m s$ is directly proportional to molar mass.

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

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

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Assertion is correct but Reason is incorrect

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Both assertion and reason are incorrect

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Solution

The correct option is D Both assertion and reason are incorrect
Carbon dioxide has lower value of root mean square velocity $u_{r} m s$ than carbon monoxide.

$u_{r} m s$ of a gas is inversely proportional to its molar mass.

$\frac{u_{C O_{2}}}{u_{C O}} = \sqrt{\frac{M_{C O}}{M_{C} O_{2}}} = \sqrt{\frac{28}{44}} = 0.79 < 1$

$u_{C O_{2}} < u_{C O}$

Hence, both Assertion and Reason are incorrect.

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Assertion :Carbon dioxide has greater value of root mean square velocity urms than carbon monoxide. Reason: urms is directly proportional to molar mass.

The correct option is D Both assertion and reason are incorrectCarbon dioxide has lower value of root mean square velocity urms than carbon monoxide.urms of a gas is inversely proportional to its molar mass.uCO2uCO=√MCOMCO2=√2844=0.79<1 uCO2<uCOHence, both Assertion and Reason are incorrect.

Assertion :Carbon dioxide has greater value of root mean square velocity $u_{r} m s$ than carbon monoxide. Reason: $u_{r} m s$ is directly proportional to molar mass.