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प्रश्न
Boojho found a bag containing the following materials
- Mirror
- Paper stained with oil
- Magnet
- Glass spectacles
Help Boojho in finding out the material(s) which is/are opaque.
विकल्प
(i) only
(iv) only
(i) and (iii)
(ii) and (iv)
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उत्तर
(i) and (iii)
Explanation:
Mirror is opaque since it is painted on one side. Magnet is opaque since it is made up of iron metal.
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संबंधित प्रश्न
Very Short Answer Type Question:
Name two objects which are made from opaque materials.
Short Answer Type Question:
What is the reason for grouping materials?
Find the odd one.
Umbrella, sponge, rain coat, jerkin
Gold and diamond are the examples of _________ materials.
Materials which can be bent or stretched easily are called ______.
Choose the odd one:
Soft material ______.
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?
lt was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?
