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प्रश्न
"A substance has a definite shape as well as a definite volume." Which physical state is represented by this statement?
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उत्तर
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संबंधित प्रश्न
Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having the minimum force of attraction first) : Water, Sugar, Oxygen
Give one difference between atoms and molecules.
What are fluids? Give two examples
Give reasons
Liquids and gases flow but solids do not?
Describe simple experiments to prove that solids occupy space
Describe simple experiments to prove that liquids have a definite volume
Describe simple experiments to prove that gases occupy space.
See the given pictures and write down the state of each object. (Solid, Liquid, Gas)
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| _____ | ______ | ______ | ______ | ______ |
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| ______ | _______ | ______ | ______ | ______ |
Solids are compressible.
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]
