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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
- The electirc field in a certain region is acting radially outward and is given by E=Ar.
- The net electric force on a charge of +3μC at the mid-point on the line joining two
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
- At what temperature will the rms speed of air molecules be double that of NTP?
- If the temperature of the sun were to increase from T to 2T and its radius from R and 2R
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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