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प्रश्न
Stone is transparent, while glass is opaque.
विकल्प
True
False
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उत्तर
This statement is False.
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संबंधित प्रश्न
Long Answer Type Question:
‘Grouping of objects helps the shopkeeper.’ Justify the statement.
Materials which can be bent or stretched easily are called ______.
Sand paper is a good example for smooth materials.
When can you say a material is waterproof material?
Sugar does not dissolve in water.
Choose the odd one:
What is material?
Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?
Match the substances in Column A with their applications given in Column B.
|
Column A |
Column B |
| (a) oxygen | (i) for making crackers |
| (b) copper | (ii) for disinfecting water |
| (c) sulphur | (iii) all living beings inhale during breathing |
| (d) iron | (iv) for making electric wires |
| (e) chlorine | (v) for making rails |
Which of the following statements is not true?
