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प्रश्न
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.
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उत्तर
Physical change: Melting of candle wax, mixing of iron filings and sand, Breaking a piece of chalk, and Cutting a piece of paper.
Chemical change: Burning of candle wax, burning of wood, and Burning a piece of paper.
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संबंधित प्रश्न
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