(C) The number $6.02 \times 10^{23}$ is known as Avogadro's number $(N_A)$.By definition,one mole of any substance contains exactly $6.02 \times 10^{2

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(C) The number $6.02 \times 10^{23}$ is known as Avogadro's number $(N_A)$.By definition,one mole of any substance contains exactly $6.02 \times 10^{23}$ elementary entities (atoms,molecules,or ions),regardless of the temperature,pressure,or volume of the substance.Therefore,the Assertion is correct.However,the definition of a mole does not depend on $S.T.P.$ (Standard Temperature and Pressure) conditions.$S.T.P.$ conditions are only relevant when calculating the volume occupied by one mole of an ideal gas (which is $22.4 \ L$ at $S.T.P.$).Thus,the Reason is incorrect.

Class 11 Physics Kinetic Theory of Gases Gas Laws (Charles, Boyle's, Avagadro's, Gay Lussacs and Dalton's law) and Ideal gas Equation

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$Assertion :$ One mole of any substance at any temperature or volume always contains $6.02 \times 10^{23}$ molecules.
$Reason :$ One mole of a substance always refers to $S.T.P.$ conditions.

AIIMS 2016 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

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Kinetic Theory of Gases

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Gas Laws (Charles, Boyle's, Avagadro's, Gay Lussacs and Dalton's law) and Ideal gas Equation

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On $0^{\circ}C$,the pressure measured by a barometer is $760 \, mm$. What will be the pressure at $100^{\circ}C$?

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Column-$I$ represents gas laws and Column-$II$ represents the physical quantity which is constant for the given law. Match them correctly:

Column-$I$ Column-$II$

$(a)$ Boyle's law $(i)$ Pressure

$(b)$ Charles's law $(ii)$ Volume

$(iii)$ Temperature

Column-$I$	Column-$II$
$(a)$ Boyle's law	$(i)$ Pressure
$(b)$ Charles's law	$(ii)$ Volume
	$(iii)$ Temperature

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When the temperature of a gas in a closed vessel is increased by $1^{\circ}C$,its pressure increases by $0.4\%$. The initial temperature of the gas is ...

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When the temperature of a gas at constant volume is increased by $5^{\circ}C$,its pressure increases by $0.5\%$ of its initial value. The initial temperature of the gas is..... $K$.

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We have a jar filled with gas characterized by parameters $P, V, T$ and another jar $B$ filled with gas having parameters $2P, V/4, 2T$,where symbols have their usual meaning. The ratio of the number of molecules in jar $A$ to those in jar $B$ is

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$Assertion :$ One mole of any substance at any temperature or volume always contains $6.02 \times 10^{23}$ molecules.$Reason :$ One mole of a substance always refers to $S.T.P.$ conditions.

Similar Questions

On $0^{\circ}C$,the pressure measured by a barometer is $760 \, mm$. What will be the pressure at $100^{\circ}C$?

Column-$I$ represents gas laws and Column-$II$ represents the physical quantity which is constant for the given law. Match them correctly: Column-$I$ Column-$II$ $(a)$ Boyle's law $(i)$ Pressure $(b)$ Charles's law $(ii)$ Volume $(iii)$ Temperature

When the temperature of a gas in a closed vessel is increased by $1^{\circ}C$,its pressure increases by $0.4\%$. The initial temperature of the gas is ...

When the temperature of a gas at constant volume is increased by $5^{\circ}C$,its pressure increases by $0.5\%$ of its initial value. The initial temperature of the gas is..... $K$.

We have a jar filled with gas characterized by parameters $P, V, T$ and another jar $B$ filled with gas having parameters $2P, V/4, 2T$,where symbols have their usual meaning. The ratio of the number of molecules in jar $A$ to those in jar $B$ is

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$Assertion :$ One mole of any substance at any temperature or volume always contains $6.02 \times 10^{23}$ molecules.
$Reason :$ One mole of a substance always refers to $S.T.P.$ conditions.

Column-$I$ represents gas laws and Column-$II$ represents the physical quantity which is constant for the given law. Match them correctly:

Column-$I$ Column-$II$

$(a)$ Boyle's law $(i)$ Pressure

$(b)$ Charles's law $(ii)$ Volume

$(iii)$ Temperature