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Oxides of Nitrogen

Zeroth law of...

Question

Zeroth law of thermodynamics is not valid for which one of the following ?

50 m l

of water at

25^{o} C

is mixed with

150 m l

of water at

25^{o} C

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500 m l

of milk at

15^{o} C

is mixed with

100 m l

of water at

15^{o} C

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5 k g

of wet steam at

100^{o} C

is mixed with

50 k g

of dry and saturated steam

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10 m l

of water at

20^{o} C

is mixed with

10 m l

of Sulfuric acid at

20^{o} C

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Solution

The correct option is D $10 m l$ of water at $20^{o} C$ is mixed with $10 m l$ of Sulfuric acid at $20^{o} C$
Two bodies in contact are at the same temperature when in thermal equilibrium.
In case, $10 m l$ of water at $20^{0} C$ is mixed with $10 m l$ of Sulfuric acid at $20^{0} C$ , there is no equilibrium
between the components of the mixture because there will be an spontaneous ionic reaction.

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