| ⇦ | 
| ⇨ |
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 escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
- A wire of resistance 4 ohm is stretched to twice its original length.
- In electromagnetic spectrum, the frequencies of γ-rays and x-rays and ultraviolet rays
- At what height h above earth, the value of g becomes g/2 (where R=radius of earth)?
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
- A wire of resistance 4 ohm is stretched to twice its original length.
- In electromagnetic spectrum, the frequencies of γ-rays and x-rays and ultraviolet rays
- At what height h above earth, the value of g becomes g/2 (where R=radius of earth)?
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply