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प्रश्न
Which metal is preferred for the preparation of hydrogen?
from water?
उत्तर
Reactive metals such as potassium, sodium, and calcium.
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संबंधित प्रश्न
What is noticed if the products are not allowed to escape?
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A divalent metal
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
How would you modify your apparatus to collect dry hydrogen? Which drying agent would you employ for this purpose?
Complete and balance the following reaction.
Zn + NaOH →_____________ +___________
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
Name the electrode –
- through which the current enters the electrolyte.
- at which hydrogen is liberated.
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.
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
State the reactant added to hydrogen to obtain the respective product in following case.
Water
