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प्रश्न
Name the terms for the particles of matter which may or may not have independent existence.
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उत्तर
this criteria is shown by atoms of any matter which may exist alone (like helium) or may not exist alone and exist in molecular form (like oxygen/o₂ )
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संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
A kind of matter which can sublime is
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
What is meant by saying that metals are malleable and ductile ?
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
What elements do the following compounds contain ?
Sugar, Common salt
Name a metal which is yellow in colour.
What are the three general classes of matter ? Give one example of each type.
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Define solute.
Define solvent.
Define Aerosol Give one example.
Define Foam Give one example.
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.
How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C ?
One of the following liquids will leave behind a residue on heating. This one is :
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
How will you separate iron pins from sand ?
Pure copper sulphate can be obtained from an impure sample by the process of :
The particles in the matter are extremely small and can be seen even with a powerful microscope.
