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प्रश्न
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
उत्तर
Calcium - Ca + 2H2O → Ca[OH]2 + H2 [g]
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ..................... than air.
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
Multiple Choice Question
Water gas is a mixture of
How do different metals displace hydrogen from water? Explain with the help of equations.
For laboratory preparation of hydrogen, give the following:
method of collection
Complete and balance the following reaction.
Fe + HCl →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Aluminium - 2Al + 3H2SO4 → ______+ _______ [g]
Name an element whsich reacts violently with water at room temperature.
State the electronic configuration of hydrogen [at. no. 1].e
Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
