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प्रश्न
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
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उत्तर
Physical change: Sublimation of a solid, making a fruit salad from raw fruits, formation of clouds, and dissolution of carbon dioxide in water Chemical change: Decomposition of water into hydrogen and oxygen by passing electric current (electrolysis)
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संबंधित प्रश्न
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
Write short answer.
Sublimation is classified as a physical change. Why ?
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State whether the following is physical or chemical changes.
glowing of a bulb -
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Classify the following as a physical or a chemical change.
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Read the paragraph and note down the various types of changes it mentions.
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Natural changes which take place in nature on their own, are beyond the control of human being.
Grinding of wheat grain changes its size. It is a ____________ change.
Mention a few physical properties of a substance.
