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प्रश्न
What will you take into account while identifying the following?
A physical change in a substance.
उत्तर
Physical changes are those changes in which only the forms of substances get modified; the chemical natures and compositions of the substances involved are not altered.
Characteristics:
- No new substance is formed during a physical change.
- Most physical changes can be reversed easily.
- The chemical composition of a substance undergoing physical change remains the same.
संबंधित प्रश्न
State the various conditions that favour the process of evaporation.
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
water cycle in nature —
Write true or false
Earthquake is a desirable change.
True or false
Is melting of ice a reversible change?
State the Differences Between a Physical Change and a Chemical Change.
Classify the Following as a Physical Or a Chemical Change.
Formation of Clouds
Differentiate between a physical change and a chemical change with reference to – Energy change taking place during the respective change.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
