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प्रश्न
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with steam
उत्तर
Magnesium burns in steam with an intense white light liberating hydrogen gas and white ash, i.e. magnesium oxide.
Mg + H2O → MgO + H2
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संबंधित प्रश्न
Complete and balance the following equation:
H2+____________→ 2HCI
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Multiple Choice Question
Hydrogen is responsible for producing
Multiple Choice Question
Hydrogen is
MULTIPLE CHOICE QUESTIONS
Which is the lightest of all elements?
- hydrogen
- helium
- lithium
- none of these
FILL IN THE BLANK
In nature, hydrogen occurs as a .................. molecule represented as H2
FILL IN THE BLANK
The compounds of carbon and hydrogen are called .................
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
FILL IN THE BLANK
Ammonia is used to make ................
Why is hydrogen called a reducing agent? Give chemical equation to support your answer ?
Write the balanced equation and give your observation when the following metal reacts:
Sodium with cold water
Give the balanced equation of the reaction.
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Hydrogen sulphide is ______ to sulphur since the reaction involves ______ of hydrogen.
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
What do you observe when a piece of sodium is dropped into cold water?
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
