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What is the name of the process due to w...

What is the name of the process due to which dry ice changes into carbon dioxide gas ?

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LAKHMIR SINGH & MANJIT KAUR-MATTER IN OUR SURROUNDINGS -NCERT
  1. What is the name of the process due to which dry ice changes into carb...

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  2. Which of the following are matter? Chair, air,love, smell, hate, atmon...

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  3. Give reasons for the following observation: The smell of hot sizzling ...

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  4. A diver is able to cut through water in a swimming pool. Which propert...

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  5. CHARACTERISTICS OF PARTICLES OF MATTER

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

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  7. (a) Tabulate the differences in the characteristics of states of matte...

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  8. Give reasons (a) A gas fills completely the vessel in which it is ke...

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  9. Liquids generally have lower density as compared to solids but you mus...

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  10. Convert the following temperatures to celsius scale : (a) 300 K (...

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  11. What is the physical state of water at: a. 250^(@)C b. 100^(@)C ?

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  12. For any substance, why does the temperture remain constant during the ...

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  13. Suggest a method to liquefy atmospheric gases.

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

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  15. How does the water kept in an earthen pot (mataka) become cool during ...

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  16. Why does our palm feel cold when we put some acetone or petror or per...

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  17. Why are we able to sip hot tea or milk faster from a saucer rather tha...

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  18. What type of clothes should we wear in summer?

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  19. Convert the following temperatures to the celsius scale. (a) 293k (...

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  20. Convert the folowing temperature to the kelvin scale. (a) 25^(@)C (b...

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  21. Give reason for the following observations. (a) Naphthalene balls d...

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