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- Why soap lathers with soft water but not with hard water ?
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- How hydrogen peroxide restores the colour of oil paintings ?
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- What happens when acidified potassium iodide is heated with H2O2 equa...
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- How does heavy water differ from ordinary water ?
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- What are 'ortho' and 'para' hydrogen ?
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- What is the formula of heavy water ? What is its mass number ? Give on...
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- Acidified KMnO4 is decolourised by:
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- In aqueous solution, H2 does not reduce:
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- Hydrogen can be placed in halogens group because:
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- Acidified solution of Chromic acid on treatment with H2O2 yields.
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- Hydrogen combines directly with:
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- H2O2 converts potassium ferrocyanide to ferricyanide. The change obser...
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- Tritium emits:
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- Which does not react with cold water ?
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- Which method cannot be used to remove hardness of water ?
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- In which reaction hydrogen is not formed :
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- Which reaction shows oxidising nature of H2O2?
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- Iron and sulphuric acid
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- Heavy hydrogen is used :
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- Ordinary hydrogen has preponderance of:
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