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प्रश्न
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
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उत्तर
Zn + H2O → ZnO + H2
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Why nitric acid is not used in the preparation of hydrogen?
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Complete and balance the following reaction.
Zn + NaOH →_____________ +___________
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An efflorescent substance which leaves a residue having the same colour as the substance and evolves a gas which changes the colour of cobalt chloride paper.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [g]
