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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: - A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s
- A body of mass m slides down an incline and reaches the bottom
- Three capacitors each of capacitance C and of breakdown voltage V are joined in series
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s
- A body of mass m slides down an incline and reaches the bottom
- Three capacitors each of capacitance C and of breakdown voltage V are joined in series
- A body starts from rest with an acceleration of 2 m/s². After 5 second,
- Two coils of self inductance 2 mH and 8 mH are placed so close together
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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