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How many elements are found as gases und...

How many elements are found as gases under normal conditions `(1 atm and 25^(@)C)` ?

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MODERN PUBLICATION-STATES OF MATTER : GASES AND LIQUIDS-Revision Exercises (Objective Questions)(Very Short Answer Questions)
  1. Gases do not settle at the bottom of a container. Explain.

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  2. Name and state the law governing the expansion of gases when they are ...

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  3. How many elements are found as gases under normal conditions (1 atm an...

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  4. What is the effect of temperature on the vapour pressure of a liquid?

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  5. What is the effect of pressure on the boiling point of a liquid?

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  6. Arrange solid, liquid and gas in order of molecular energy giving reas...

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  7. What is the ratio of root mean square speed and most probable speed?

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  8. Why a liquid boils at a lower tempetature at the top of a mountain tha...

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  9. Define critical temperature.

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  10. Arrange the following liquids in the increasing order of their normal ...

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  11. Liquids like ether and acetone are kept in cool places.

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  12. Why are hydrogen and helium not liquefied at room temperature?

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  13. Warm water evaporates faster than cold water. Explain.

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  14. Why cooling is caused by evaporation?

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  15. What is compressibility factor ? What is its value for an ideal gas?

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  16. A rubber balloon permeable to hydrogen in all its isotopic forms is fi...

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  17. What would be the SI unit for the quantity pV^(2)T^(2)//n?

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  18. In terms of Charles' law, explain why -273^(@)C is the lowest possible...

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  19. What is meant by supercritial fluid?

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  20. The critical temperatures of carbon dioxide and methane are 31.1^(@)C ...

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