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प्रश्न
What is mass ?
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उत्तर
Mass is the quantity of matter contained in the body.
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संबंधित प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
Write whether the following statement is true or false.
Only water can exist in three different states.
Write true or false for statement. Rewrite the false statement correctly.
Solids and liquids can flow.
Match the columns.
| (1) iron and gold | (a) molecules are very far apart |
| (2) melting | (b) pure substance |
| (3) intermolecular space | (c) non - metals |
| (4) compound | (d) the space between the molecules |
| (5) gases | (e) change from solid to liquid |
| (f) metals |
If an object weighs 6 N on earth what will be its weight on moon. What will be the change in its mass?
Give reason
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
Give reasons for the following:
Water on freezing turns into ice.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to free surfaces.
Give a reason why:
Gases have no definite volume and no definite shape.
In a glass containing some water, tamarind juice and sugar are added and stirred well. Is this a mixture? Can you tell why? Will this solution be sweet or sour or both sweet and sour?
