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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
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- On bombarding U²³⁵ by slow neutron, 200 MeV energy is released. If the power output
- A 120 m long train is moving in a direction with speed 20 m/s.A train B moving
- Two bodies of mass 0.25 kg each moving towards each other with velocity
- Two thin lenses when placed in contact, then the power of combination is +10 D.
- In India, electricity is supplied for domestic use at 200V. It is supplied at 110 V
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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