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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
- A cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration
- A spherical body of emissivity e=0.6, placed inside a perfectly black body is maintained
- A rod of weight W is supported by two parallel knife edges A and B is in equilibrium
- The coefficient of mutual inductance of two coils is 6 mH. If the current flowing
- In Young’s double slit experiment, the fringe width is 1×10⁻⁴ m, if the distance
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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