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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: - The displacement of a particle along the x-axis is given by x = a sin² ?t
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- The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg)
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
- The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The displacement of a particle along the x-axis is given by x = a sin² ?t
- The difference in the variation of resistance with temperature in a metal
- The de-Broglie wavelength of a proton(charge = 1.6 x 10⁻¹⁹ C, Mass = 1.6 x 10⁻²⁷ kg)
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
- The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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