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प्रश्न
Write true or false
A natural change can also be a desirable change.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Write true or false
Earthquake is a desirable change.
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Sublimation of Iodine is a ______.
When solute is dissolved in a solvent it forms a solution.
What kind of change is shown by tearing of paper?
Mention a few physical properties of a substance.
