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प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
पर्याय
magnesium
aluminium
calcium
iron
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उत्तर
calcium
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संबंधित प्रश्न
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........................... means ‘maker of water’ in Greek.
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Why hot concentrated sulphuric acid is not used in the preparation of hydrogen?
Give a reason for the following:
Zinc granules are used in the lab preparation of hydrogen.
Complete and balance the following reaction.
Fe + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + NaOH →_____________ +___________
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
Starting from hydrogen gas how would you obtain a basic gas.
Starting from hydrogen gas how would you obtain a metal by reduction of its heated oxide.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Lead - Pb + 2NaOH → ______ + _______ [g]
