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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
- In an a.c circuit the e.m.f. (e) and the current (i) at any instant are given
- The displacement ‘x’ (in meter) of a particle of mass ‘m’ (in kg) moving in one
- If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
- A body of mass m is thrown upwards at an angle θ with the horizontal with velocity
- Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV.
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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