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ALLEN-HYDROGEN-EXERCISE-4
- In the laboratory, H(2)O(2) is prepared by the action of
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- Water is said to be permanently hard when it contains :
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- Which is the lightest gas ?
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- Which of the following pairs will not produce dihydrogen gas ?
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- The absorption of hydrogen by platinum is known as :
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- In the laboratory, H(2)O(2) is prepared by the action of
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- False statement for H atom -
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- Which of the following is the best scientific method to test the prese...
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- Positron is -
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- Boiling point of water is high due to presence of
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- Hydrogen from HCl can be prepared by
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- Heavy water is
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- D(2)O is used more in
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- When treated with nitric acid which of the following liberates hydroge...
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- Hydrogen gas is not obtained when zinc reacts with
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- In aqueous solution, H(2) will not reduce :
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- Which of the following statements is incorrect ?
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- Which one of the following removes temporary hardness of water ?
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- Heavy water (D(2)O) freezes at
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- Which can't displace hydrogen from the compounds
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