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प्रश्न
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Aluminium - 2Al + 2NaOH + 2H2O → ______ + _______ [g]
2Al + 2KOH + 2H2O → _____ + _____ [g]
उत्तर
Aluminium - 2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2 [g]
2Al + 2KOH + 2H2O → 2KAlO2 + 3H2 [g]
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संबंधित प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
FILL IN THE BLANK
........................... means ‘maker of water’ in Greek.
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Which metal is preferred for the preparation of hydrogen?
from acid?
For laboratory preparation of hydrogen, give the following:
materials used
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
How would you modify your apparatus to collect dry hydrogen? Which drying agent would you employ for this purpose?
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Iron - Fe + 2HCl → ______ + _______ [g]
