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प्रश्न
Physical Change: Boiling::Chemical Change: ______.
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उत्तर
Physical Change: Boiling::Chemical Change: Burning
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
State whether the following is physical or chemical change.
Digestion of food —
What are man-made changes ?
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Classify the following as physical or chemical change :
Condensation of steam
Classify the following as physical or chemical change :
Growth of a plant
Classify the following as a physical or a chemical change.
Drying of wet clothes
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o'clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil, and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lightning, too. Sahil was enjoying his dinner in the dim light.
What is the difference between dissolution of sugar and burning of sugar ?
Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and Step II are:
