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प्रश्न
Classify the following as physical or chemical change :
Condensation of steam
पर्याय
Physical change
Chemical change
उत्तर
Condensation of steam – Physical change
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संबंधित प्रश्न
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
What role does energy play in initiating a chemical change ?
State whether the following is physical or chemical changes.
Slaking of lime —
Fill in the blank
Changes that occur in nature are called ______
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 |
Name two reversible changes.
Given reason:
Burning of paper is a chemical change.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Give an example of a physical change in which the color of the substance changes.
