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प्रश्न
True or false
Dissolving of a solid in liquid is a physical change.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Explain the following giving an example.
Pure substance
State whether the following is physical or chemical changes.
cutting wood into small pieces —
State whether the following is physical or chemical change.
Digestion of food —
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
Sublimation is classified as a physical change. Why ?
Classify the following as physical or chemical change :
Condensation of steam
Distinguish between the following.
Physical change and chemical change
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.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
