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प्रश्न
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
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उत्तर
Colloid includes the other three. Aerosol, sol and emulsions are different types of colloids.
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संबंधित प्रश्न
Solids have definite shape and definite volume.
Fill in the blank :
The substances which can flow are called ________
Define the following term of Matter .
A kind of matter which can sublime is
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
Name one element, one compound and one mixture.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
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(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
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Choose the correct answer.
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The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
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The fluidity of solids: ______.
Define the term matter.
