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For irreversible expansion of an ideal gas under isothermal condition, the correct option is: [NEET 2021]

Q1

For irreversible expansion of an ideal gas under isothermal condition, the correct option is:

[NEET 2021]

a

\( \Delta \mathrm{U}=0, \Delta \mathrm{S}_{\text {total }}=0 \)

b

\( \Delta \mathrm{U} \neq 0, \Delta \mathrm{S}_{\text {total }} \neq 0 \)

c

\( \Delta \mathrm{U}=0, \Delta \mathrm{S}_{\text {total }} \neq 0 \)

d

\( \Delta \mathrm{U} \neq 0, \Delta \mathrm{S}_{\text {total }}=0 \)

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