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If a piece of iron is hammered, it becom...

If a piece of iron is hammered, it becomes warmer. Why?

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SL ARORA-Thermal Properties of Matter-Exercise
  1. A metallic circular disc having a circular hole at its centre rotates ...

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  2. Define mechanical equivalent of heat. What is its value ?

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  3. If a piece of iron is hammered, it becomes warmer. Why?

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  4. A spark is produced when two stones strike against each other. Why?

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  5. Tea gets cooled, when sugar is added to it. Why ?

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  6. Name the three modes of transmission of heat.

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  7. Out of the three modes of transmission of heat, which one is fastest ?

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  8. The temperature gradient in a rod 0.5 m long is 40^@C per metre. The t...

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  9. Coefficient of thermal conductivity depends on ?

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  10. Define coefficient of thermal conductivity or thermal conductivity of ...

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  11. The dimensional formula for coefficient of thermal conductivity is :

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  12. How do you arrange Cu, Al and Ag in the order of increasing thermal co...

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  13. What is thermal conductivity of a perfect heat conductors of a perfect...

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  14. In which methods of heat transfer, mass of the substance heated does n...

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  15. If temperature of black body increases from 300K to 900K, then the rat...

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  16. What is sublimation?

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  17. The critical temperature of water is the

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  18. Answer the following question beased on tbhe P-T phase diagram of carb...

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  19. Answer the following question beased on tbhe P-T phase diagram of carb...

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  20. Answer the following questions based on the P – T phase diagram of CO(...

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