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LAKHMIR SINGH & MANJIT KAUR-PHYSICAL AND CHEMICAL CHANGES-EXERCISE
- What happens when magnesium ribbon is burned in air ? Write a word equ...
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- What happens when magnesium oxide is dissolved in water ? Write a word...
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- Which one of the following is not a chemical change ?
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- Which of the following are physical changes? (i) Melting of iron met...
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- Which of the following are chemical changes? (i) Decaying of wood ...
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- Which one of the following change can be reversed ?
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- Which of the following is not a physical change ?
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- When ice-cream melts : A. Heat is lost from the ice-cream B. Heat ...
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- Which of the following is a chemical change ?
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- One of the following is not a chemical change. This one is
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- Which of the following is not a characteristic of a physical change ?
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- The gas that turns lime water milky is
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- The ozone layer in the atmosphere absorbs
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- The rusting of iron can be prevented by coating it with a layer of : ...
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- Impure copper sulphate powder can be purified by the process of :
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- The gas we use in the kitchen is called liquefied petroleum gas (LPG)....
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- Anaerobic bacteria digest animal waste and produce biogas (change A). ...
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- When magnesium is burned in air, a powdery ash X is formed. X on disso...
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- When magnesium is burned in air, a powdery ash X is formed. X on disso...
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- When magnesium is burned in air, a powdery ash X is formed. X on disso...
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