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प्रश्न
The smallest unit of matter that exists freely in nature is called ...........
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उत्तर
The smallest unit of matter that exists freely in nature is called molecule.
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संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Name one solid, one liquid and one gaseous non-metal.
State any two properties for believing that aluminium is a metal.
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Name the process by which all the dye can be recovered from black ink.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
All the matter made of ______.
Liquids cannot be compressed and they have fixed volume.
