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प्रश्न
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
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उत्तर
\[\ce{2Al + 2NaOH + 2H2O ->\underset{\text{Sodium metal aluminium}}{2NaAlO2} + 3H2}\]
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संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
The hydrogen molecule is monovalent.
Hydrogen is combustible as well as a supporter of combustion.
Complete and balance the following equation:
H2+____________→ 2HCI
Multiple Choice Question
Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
MULTIPLE CHOICE QUESTIONS
The name hydrogen was given by
- Cavendish
- Lavoisier
- Haber
- none of these
FILL IN THE BLANK
Ammonia is used to make ................
Why is hydrogen called a reducing agent? Give chemical equation to support your answer ?
Give the balanced equation of the reaction.
How is hydrogen separated from carbon dioxide and carbon monoxide?
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
Give balanced equation for the following conversion:
Iron [III] oxide to iron – using hydrogen.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
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.
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Describe one chemical test applied to the following gases, which would enable you to distinguish between them :‘carbon monoxide and hydrogen’.
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
Write balanced equation of the reaction in the preparation of : hydrogen from a solution of potassium hydroxide [other than by electrolysis].
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
