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प्रश्न
Classify the following as a physical or a chemical change.
Burning of coal
उत्तर
Chemical change
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संबंधित प्रश्न
A physical change is temporary. Explain.
Write true or false
Cutting of paper into pieces is a chemical change.
Write true or false
Deforestation is a man-made change.
State the various conditions that favour the process of evaporation.
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
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Select the chemical changes from the following list of changes
Change of seasons
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
______ is the substance that is dissolved in a solvent.
