Advertisements
Advertisements
प्रश्न
How can you obtain hydrogen from sodium hydroxide [not by electrolysis].
Advertisements
उत्तर
When powdered zinc reacts with sodium hydroxide it produces hydrogen.
\[\ce{Zn + 2NaOH ->\underset{\text{Sodium zincate}}{Na2ZnO2} + H2}\]
APPEARS IN
संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Complete and balance the following equation:
H2+____________→ 2HCI
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Multiple Choice Question
Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
Multiple Choice Question
Hydrogen is responsible for producing
FILL IN THE BLANK
Ammonia is used to make ................
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with boiling water
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen is a combustible gas.
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen does not support combustion.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine acts as an ______ agent.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.
Name a gas which burns in air or oxygen forming water.
What do you observe when a piece of sodium is dropped into cold water?
What do the following symbols represent : 2H and H2.
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
