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प्रश्न
Fill in the blanks:
______ and ______ can flow.
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उत्तर
Liquids and gases can flow.
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संबंधित प्रश्न
"A substance has a definite shape as well as a definite volume." Which physical state is represented by this statement?
Name the smallest particle from which matter is made up.
Give reasons
We can walk through air.
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
To identify materials of common use
Procedure – Just move around in your house – in the drawing room, sitting room, bedroom, kitchen, bathroom etc. Identify the things and All in the blanks in the table given below
| No. | Place | Name of the thing | Material used for making the thing |
| 1 | Study room | ||
| 2 | Drawing room | ||
| 3 | Kitchen | ||
| 4 | bathroom | ||
| 5 | Any other place |
Describe simple experiments to prove that solids have a definite volume
Which of the following are the states of matter?
In solids, the space between the particles is less than in ______.
Choose the odd one:
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]
