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When we step barefoot into an office wit...

When we step barefoot into an office with a marble floor, we feel cold. Why ?

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SL ARORA-Thermal Properties of Matter-Exercise
  1. Why are two thin blankets are warmer than a single blanket of double t...

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  2. Why are calorimeter made of metal, why not of glass?

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  3. When we step barefoot into an office with a marble floor, we feel cold...

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  4. We can easily boil water in a paper cup. Why?

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  5. A piece of paper wrapped tightly on a wooden rod is found to get charg...

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  6. Woolen cloths are worn in winter but not in summer. Why?

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  7. Stainless steel cooking pans are perferred with extra copper bottoms. ...

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  8. If a drop of water falls on a very hot iron, it does not evaporates fo...

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

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  10. Usually a good conductor of heat is a good conductor of electricity al...

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  11. Why do electrons in insulators not contribute to its conductivity?

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  12. As air is a bad conductor of heat, whu do we not feel warm without clo...

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  13. Room are provided with the ventilators near the roof. Why?

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  14. Why snow is better heat insulator than ice?

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  15. We cannot boil water inside the earth's satellite. Explain.

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  16. Water is heated from below but not from top. Why?

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  17. Statement-1: Coolant coils are fitted at the top of a refrigerator , f...

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  18. The earth constantly receives heat radiation from the sun and gets war...

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  19. Animals curl into a ball, when they feel very cold.

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  20. A poor emitter has a large reflectivity. Explain why.

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