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प्रश्न
Fill in the blank.
The process of a liquid changing into a solid is called ________
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उत्तर
The process of a liquid changing into a solid is called freezing.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
shaping a piece of glass —
Write true or false
Rusting of iron is a chemical change.
Match the columns.
| Column A | Column B |
| 1. a change which cannot be easily reversed | a. man-made change |
| 2 a change that repeats itself at regular intervals | b. chemical chang |
| 3. a change that is made by humans | c. physical change |
| 4. a change in which the original substance cannot be obtained | d. periodic change |
| 5. a change where no new substance is formed | e. irreversible change |
| f . slow change |
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Give four difference between physical and chemical changes.
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
Stretching gold coin into a ring is a ______ change.
When solute is dissolved in a solvent it forms a solution.
