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PSEB-PHYSICAL AND CHEMICAL CHANGES-Exercise
- Classify the changes involved in the following processes as physical o...
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- State whether the following statements are true and false. In case a s...
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- State whether the following statements are true and false. In case a s...
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- State whether the following statements are true and false. In case a s...
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- State whether the following statements are true and false. In case a s...
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- State whether the following statements are true and false. In case a s...
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- Fill in the blanks in the following statements:- When carbon dioxide i...
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- Fill in the blanks in the following statements:- The chemical name of ...
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- Fill in the blanks in the following statements:- Two methods by which ...
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- Fill in the blanks in the following statements:- Changes in which only...
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- Fill in the blanks in the following statements:- Changes in which new ...
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- When baking soda is mixed with lemon juice, bubbles are formed with ...
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- When a candle burns, both physical and chemical changes take place. Id...
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- How would you show that setting of curd is a chemical change?
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- Explain why burning of wood and cutting it into small pieces are consi...
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- Describe how crystals of copper sulphate are prepared.
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- Explain how painting of an iron gate prevents it from rusting.
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- Explain why rusting of iron objects is faster in coastal areas than in...
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- The gas we use in the kitchen is called liquified petroleum gas (LPG)....
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- Anaerobic bacteria digest animal waste and produce biogas (Change-A). ...
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