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Question
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A divalent metal
Solution
Ca + 2H2O → Ca(OH)2 + H2
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MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
For laboratory preparation of hydrogen, give the following:
chemical equation
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Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Zn + NaOH →_____________ +___________
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Aluminium - 2Al + 3H2SO4 → ______+ _______ [g]
Account for the following fact:
Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.
