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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.
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Temperature is a measurement of coldness or hotness of an object.
- A change of 0.04 V takes place between the base and the emitter when an input
- The specific charge of a proton is 9.6×10⁷ C/kg. The specific charge of an alpha particle
- A boy playing on the roof of a 10m high building throws a ball with a speed
- If vectors A=cos wti + sin wtj and B= cos wt/2 i + sin wt/2 j are functions of time,
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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