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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 stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A bicyclist comes to a skidding stop in 10 m.During this process, the force
- A simple pendulum has a time period T₁ when on the earth’s surface and T₂ When taken
- A light whose frequency is equal to 6.0 x 10¹⁴ Hz is incident on a metal
- A current of 5 A is flowing at 220 V in the primary coil of a transformer. If the voltage
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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