Questions with detailed step by step solutions from Hydrogen

Questions in Hydrogen
  1. The scientist who has established the elementary character of hydrogen is
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  2. In the laboratory preparation of hydrogen, the hydrogen gas formed is collected by the downward displacement of water because
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  3. The density of hydrogen is
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  4. When hydrogen is passed under the pressure at $200{}^\text{o}C$ through vegetable oils in the presence of a catalyst Nickel, the reaction is called
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  5. When hydrogen is passed under the pressure at $200{}^\text{o}C$ through vegetable oils in the presence of a catalyst Nickel, it forms:
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  6. The mixture of hydrogen and oxygen on burning produces heat up to $2800{}^\text{o}C$ . This is called oxy-hydrogen flame. The application of this flame is
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  7. Hydrogen acts as a reducing agent, in the following reaction which of the substance gets reduced. $PbO+~{{H}_{2}}~\to Pb+{{H}_{2}}O$
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  8. Oxidation is
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  9. Reduction is
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  10. Hydrogen has a very important property of combining with nitrogen at $450{}^\text{o}C$ and in the presence of catalyst iron, the gas formed is
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