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प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
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उत्तर
A metal above hydrogen in the reactivity series gives hydrogen with dilute acids.
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
Name the following:
Two metals which give hydrogen with cold water.
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
Complete and balance the following reaction.
Fe + HCl →_____________ +___________
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with steam
Aluminium - 2Al + 3H2O → ______+ _______ [g]
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
