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Question
Name five objects which can be made from wood.
Solution
Five objects that can be made from wood are:
- Table
- Chair
- Doors
- Boat
- Bed
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Match the substances in Column A with their applications given in Column B.
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Across
1. Which is generally hard, ductile, malleable and sonorous.
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3. Metal bells are used because of this property.
Down
4. A metal generally used for making jewellery.
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7. Substances used to enhance the growth of plants.
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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?
Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?