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प्रश्न
Name the following:
Two metals which give hydrogen with cold water.
उत्तर
Sodium (Na) and Potassium (K) give hydrogen with cold water.
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Why nitric acid is not used in the preparation of hydrogen?
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Starting from hydrogen gas how would you obtain a metal by reduction of its heated oxide.
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
Potassium- K + H2O → ______+ ______ [g]
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 dilute acids
Iron - Fe + 2HCl → ______ + _______ [g]
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
