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प्रश्न
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
विकल्प
Nickel
Sodium
Iron
Iron [III] oxide
Magnesium oxide
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उत्तर
Sodium
APPEARS IN
संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
The meaning of the term ‘electrolysis’ and ‘electrolyte’.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Aluminium - 2Al + 3H2O → ______+ _______ [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.
