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Mention any two substances which sublime...

Mention any two substances which sublime.

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Dry ice, also called solid `CO_2` and Iodine sublime. During sublimation solid and vapour states co-exist in thermal equilibrium
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SUBHASH PUBLICATION-THERMAL PROPERTIES OF MATTER-TWO MARKS QUESTION AND ANSWERS
  1. Write Vander-Waal equation arid explain the symbols used.

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  2. Cutting of ice by a taut thread is more feasible than with a taut meta...

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  3. Mention any two substances which sublime.

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  4. Define thermal conductivity. Write its SI unit.

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  5. Why is the bottom of cooking vessel made of steel, coated with copper?

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  6. The walls of buildings facing east or west are usually built with holl...

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  7. Explain briefly convection air currents setting up a sea breeze.

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  8. Explain land breeze.

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  9. What are trade winds? Explain.

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  10. What are black bodies?

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  11. The bottom of the cooking vessel is usually roughened or blackened. Ex...

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  12. Solar water heaters use cadmium black as a coating material on copper ...

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  13. Distinguish between specific bent and thermal conductivity or a substa...

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  14. The bottom of the skis/skates is sharp. Explain why.

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  15. Explain the term triple point of the substance.

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  16. What is a phase diagram? Draw a phase diagram with regard to water.

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  17. Explain why, a body with large reflectivity is a poor emitter.

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  18. Explain why, a brass tumbler feels much colder than a wooden tray on...

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  19. Explain why, an optical pyrometer calibrated for an ideal black body...

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  20. Explain why, the Earth without its atmosphere would be inhospitably ...

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