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प्रश्न
What are the two conditions for the interconversion of states of matter ?
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उत्तर
Two conditions are : change in
- Temperature
- Pressure
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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 |
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
Name a metal which forms amalgams.
The property/properties which enable copper metal to be used for making electric wires is/are :
Which of the following does not have a fixed melting point/boiling point ?
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Define solubility of a substance. How does it vary with temperature ?
Which of the following can be called a suspension ?
One of the following represents the solution of solid in a solid. This one is :
How will you separate a mixture of common salt, sulphur powder and sand ?
Which of the following mixture cannot be separated by using water as the solvent ?
Which one of the following scrap metal cannot be separated by magnetic separation ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
Which among the following ______ will get attracted to by magnet?
______ is so hard that it can scratch glass.
Evaporation does form bubbles.
