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Give reason for the following observatio...

Give reason for the following observation: The small of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

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Two ideal gas thermometers A and B use oxygen and hydrogen respectively. The following observation are made: What do you think to the reason for slightly different answers from A to B? (The thermometers are not faulty).

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MBD-MATTER IN OUR SURROUNDINGS-Example
  1. What is matter?

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  2. Give reason for the following observation: The small of hot sizzling ...

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  3. A diver is able to cut through water in a swimming pool, which propert...

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  4. What are the characteristics of the particles of matter?

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  5. The mass per unit volume of a substance is called density.(density=...

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  6. Tabulate the diffrence in the characteristics of states of matter.

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  7. Comment upon which of the following are matter: rigidity, fludity, fil...

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  8. Give reason : A gas fills completely the vassel in which it is kept.

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  9. Give reason : a gas exerts pressure on the walls of the container.

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  10. Give reason : A wooden table should to be called a solid.

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  11. Give a reason : We can easily move our hand in air but to do the same...

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  12. Liquids generally have lower density as compared to solids. But you m...

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  13. Convert the following temperature to celsius scale: 300 K ?

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  14. Convert the following temperature to celsius scale: 573 K ?

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  15. What is the physical state of water at: 250^@ C ?

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  16. What is the physical state of water at: 100^@C ?

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  17. For any substance, Why does the temperature remain constant during the...

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  18. Suggest a method to liquefy atmospheric gases.

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  19. Why does a desert cooler cool better on a hot dry day ?

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  20. How does the water kept in an earthen pot (matka) become cool during s...

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