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प्रश्न
Which pair of substances among the following would float in a tumbler half filled with water?
विकल्प
Cotton thread, thermocol
Feather, plastic ball
Pin, oil drops
Rubber band, coin
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उत्तर
Feather, plastic ball
Explanation:
Feather and plastic ball will float on water because they are lighter than water.
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संबंधित प्रश्न
Very Short Answer Type Question:
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Complete the crossword given in the figure with the help of the clues.
Across
1. Which is generally hard, ductile, malleable and sonorous.
2. A metal is called so it can be drawn into wires.
3. Metal bells are used because of this property.
Down
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5. A metal which is liquid at room temperature.
6. A metal which reacts with acid as well as base to form hydrogen gas.
7. Substances used to enhance the growth of plants.
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Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
