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प्रश्न
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
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उत्तर
Sublimation of iodine is an example of physical change.
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संबंधित प्रश्न
Fill in the blank.
An earthquake is a .................. change.
State the various conditions that favour the process of evaporation.
Write true or false
Burning of paper and formation of curd are reversible changes.
What is a physical change ? Give two examples of physical changes.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
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.
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
What is the difference between dissolution of sugar and burning of sugar ?
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
