Questions with detailed step by step solutions from Physical and Chemical Changes

Questions in Physical and Chemical Changes
  1. A substance undergoes a kind of change when
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  2. The physical changes are
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  3. When the identity of the substance is altered which generally results in formation of new substances it is called
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  4. Which one among the following is an irreversible change ?
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  5. Choose the incorrect sentence about changes.
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  6. A __________change is accompanied by evolution or absorption of heat and sometimes emission of light.
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  7. State which of the following statement shows physical change.
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  8. The condition for an iron rod to get rusted is
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  9. The rusting of iron is a
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  10. The chemical formula of a rust is
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