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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
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Fill in the blank.
A new substance is formed in a ............... change.
How do you say that the process of digestion is a chemical change ?
Define physical change. Give two examples for the above changes.
State whether the following is physical or chemical changes.
photosynthesis —
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
Distinguish physical and chemical changes.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
