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Phase Changes and Thermal Properties of Matter

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Multiple Choice

If, melting and boiling point of a liquid is $-{50}^{o}C$ and ${150}^{o}C$ respectively, and on the basis of this liquid a thermometer is formed with ${0}^{o}L$ representing the melting point as the minimum temperature on the scale and ${100}^{o}L$ representing the boiling point as the maximum temperature on the scale, find the melting and boiling point on this thermometer

  1. $0$ and ${100}^{o}L$ respectively
  2. ${30}^{o}L$ and ${80}^{o}L$ respectively
  3. ${20}^{o}L$ and ${70}^{o}L$ respectively
  4. ${25}^{o}L$ and ${75}^{o}L$ respectively
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