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At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
Options
(a) zero
(b) 18.5
(c) 15
(d) None of these
Correct Answer:
18.5
Explanation:
Heat absorbed = mL cal. = mL J joule
Change of entropy ∆S = Heat/Temperature
∆S = mLJ / Temperature = (15×80×4.2) / 273
∆S = 18.46 J/K.
Related Questions: - The work function for metals A,B abd C are respectively 1.92 eV,2.0 eV and 5 eV.
- 4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The work function for metals A,B abd C are respectively 1.92 eV,2.0 eV and 5 eV.
- 4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas
- A compass needle which is allowed to move in a horizontal plane
- Initial pressure and volume of a gas are P and 800cc. If the final volume is 100cc
- A ball is moving in a circular path of radius 5 m.If tangential acceleration
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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