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When steam is passed over red hot iron, ...

When steam is passed over red hot iron, the substance formed are:

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S CHAND IIT JEE FOUNDATION-HYDROGEN-QUESTION BANK (true or false)
  1. Hydrogen is the lightest of all elements known to us.

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  2. Hydrogen molecule is bivalent.

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  3. The removal of hydrogen from a compound is called reduction.

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  4. When steam is passed over red hot iron, the substance formed are:

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  5. Hydrogen is highly soluble in water.(True / False)

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  6. Copper, mercury, silver, gold and platinum are placed below hydrogen i...

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  7. Hydrogen is combustible and a supporter of combustion.(True / False)

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  8. The reaction between hydrogen and nitrogen to form ammonia is reversib...

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  9. In the laboratory, hydrogen is prepared by the action of dilute nitric...

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  10. Hydrogen is collected in the laboratory by upward displacement of wate...

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  11. Hydrogen turns red litmus blue. (True / False)

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  12. Hydrogen occurs only, in traces in elemental form on Earth but it wide...

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  13. Hydrogen is a good reducing agent. It reduces metallic oxides into met...

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  14. Hydrogen has a dual position in the periodic table. (True / False)

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  15. Conc. H2SO4 reacts with Zinc to liberate hydrogen.

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  16. All metals react with acids to give hydrogen. (True / False)

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  17. The reaction between hydrogen and oxygen is highly exothermic. (True /...

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  18. Reactive metals like potassium and sodium react gently with cold water...

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