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प्रश्न
What kind of change is shown by tearing of paper?
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उत्तर
Tearing of paper is a physical change that cannot be reversed.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
photosynthesis —
Write true or false
A natural change can also be a desirable change.
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
Distinguish between the following.
Physical change and chemical change
What will you take into account while identifying the following?
A chemical change in a substance.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Select the chemical changes from the following list of changes
Butter turning rancid
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
Give two examples for the following case:
Physical changes which are not reversible
