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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: - In a potentiometer experiment, the balancing with a cell is at length 240 cm.
- A photocell employs photoelectric effect to convert
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- Masses of three wires of copper are in the ratio of 1:3:5 and their lengths
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a potentiometer experiment, the balancing with a cell is at length 240 cm.
- A photocell employs photoelectric effect to convert
- In nuclear fusion, two nuclei come together to form a large nucleus.
- Masses of three wires of copper are in the ratio of 1:3:5 and their lengths
- A long straight wire is carrying a current of 12 A. The magnetic field at a distance
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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