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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 a coil having e.m.f. of 8 V induced for 0.05 s. The value of current changes
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
- The kinetic energy needed to project a body of mass m from the surface of earth
- When the wavelength of sound changes from 1 m to 1.01 m,
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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