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प्रश्न
Explain what happens when a beam of light is passed through a colloidal solution.
Explain what is observed when a beam of light is passed through a colloidal solution.
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उत्तर
A true solution can be distinguished from a colloidal solution by observing the Tyndall effect. A true solution does not scatter a beam of light passing through it, but a colloidal solution scatters a beam of light passing through it.
संबंधित प्रश्न
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Fill in the blank
Liquids have a definite ______
Write true or false for each statement. Rewrite the false statement correctly.
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of their constituents ?
Fill in the following blanks with suitable words :
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What is the name of the clear liquid formed when a solid dissolves in a liquid ?
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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 .......................
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______ is a smallest particle.
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Name a non-metal which exists as a liquid at room temperature.
______ is so hard that it can scratch glass.
Gases change to liquid by the process of ______.
Define the term matter.
