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JEE Main 2-April-2025 Paper - Shift 1 — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEEJEE Main 2-April-2025 Paper - Shift 14 Marks
MCQ
In an adiabatic process, which of the following statements is true?
  • A
    The molar heat capacity is infinite
  • B
    Work done by the gas equals the increase in internal energy
  • ✓
    The molar heat capacity is zero
  • D
    The internal energy of the gas decreases as the temperature increases
✓

Answer

Correct option: C.
The molar heat capacity is zero
(C) The molar heat capacity is zero
Explanation: For adiabatic process, $dQ =0$
$\therefore$ Molar heat capacity $=0$
$\because dQ=0 \Rightarrow dU=-dW$
Also $dU =\frac{ f }{2} nRdT$
$\therefore$ Only option (3) is correct.

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