MCQ
In a closed insulated container a liquid is stirred with a paddle to increase its temperature.  The correct one is
  • $\Delta U = W \neq 0, q = 0$
  • B
    $\Delta U = W = q \neq 0$
  • C
    $\Delta U = 0, W = q \neq 0$
  • D
    $W = 0, \Delta U = q \neq 0$

Answer

Correct option: A.
$\Delta U = W \neq 0, q = 0$
a
Adiobatic process $q=0$

${\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}}$

${\Delta \mathrm{U}=\mathrm{W} \neq 0}$

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