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प्रश्न
Give two examples for the following case:
Chemical changes
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उत्तर
- Burning of paper
- Curdling of milk
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संबंधित प्रश्न
What do you observe when :
an iron nail is kept in tap water for few days
Write true or false :
No new substance is formed during a chemical reaction.
Choose the correct option from the bracket and explain the statement giving reason.
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To prevent rusting, a layer of ______ metal is applied on iron sheets.
Give a chemical test to distinguish between the following gases.
HCl and H2S
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
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Explain the following statement: Digestion is a chemical change.
Magnesium + oxygen → magnesium oxide.
2Mg + O2 → 2Mg O
We are advised to not to play with fireworks. Give reason.
Write the characteristics of chemical change.
