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प्रश्न
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly but do not leave the surface
विकल्प
Solid
Liquid
Gas
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उत्तर
Liquid
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संबंधित प्रश्न
How do solids, liquids and gases differ in shape and volume?
Name the smallest particle from which matter is made up.
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, L.P.G, carbon- dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Give reasons
Liquids and gases flow but solids do not?
Write whether the following statement is true or false:
If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely
Describe simple experiments to prove that gases have mass.
Match the following.
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
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| iii | Separation of insoluble impurities | Iron impurities | Filtration |
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| v | Separation of solids from liquids | Husk and paddy | Winnowing |
Distinguish the properties of solid, liquid, and gas. Draw a suitable diagram.
The feather and paper cup can float on the water.
A strong current of trivalent gaseous boron passed through a silicon crystal decreases the density of the crystal due to part replacement of silicon by boron and due to interstitial vacancies created by missing Si atoms. In one such experiment, one gram of silicon is taken and the boron atoms are found to be 1000 ppm by weight, when the density of the Si crystal decreases by 12%. The percentage of missing vacancies due to silicon, which are filled up by boron atoms will be ____ g. [Given · Atomic wt. Si= 30, B = 11]
