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प्रश्न
Define matter.
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उत्तर
Anything that has mass and occupies space is called matter.
संबंधित प्रश्न
Liquids have definite volume but do not have definite shape.
Name the terms for the particles of matter which may or may not have independent existence.
Name the terms for the change of vapour into a liquid.
Name a non-metal which is a good conductor of electricity.
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
What are pure substances ? Give two examples of pure substances.
What is the other name for impure substances ? Give two examples of impure substances.
Give reason why graphite is used for making elecrode in a dry cell.
Which of the following are compounds ?
- CO
- No
- NO
- Co
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Define solvent.
What is the difference between solutions and colloids ?
One of the following is a solid foam. This one is :
Milk of Magnesia is :
One of the following liquids will leave behind a residue on heating. This one is :
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
Which of the following cannot be separated from air by the process of fractional distillation ?
Which among the following is not a matter?
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
The movement of particles in liquids is ______.
