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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
पर्याय
burning of candle
melting of ice
cooking of food
blowing of bulb
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उत्तर
burning of candle
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संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Write short answer.
Give an example of desirable change which can also be undesirable
Define physical change. Give two examples for the above changes.
What are reversible and irreversible changes ? Give one example for each.
State whether the following is physical or chemical changes.
respiration in living beings —
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
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.
Explain the term – ‘sublimation’. Is sublimation of naphthalene – a physical or a chemical change. Give reasons.
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
