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प्रश्न
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with boiling water
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उत्तर
Magnesium reacts slowly with boiling water and forms a base, magnesium hydroxide, liberating hydrogen gas.
\[\ce{Mg + 2H2O →Mg(OH)2 + H2 \uparrow}\]
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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.
Indicate which of the following statement is true and which is false:
Hydrogen gas is easily liquefiable.
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Hydrogen is a good reducing agent: What do you understand by the above statement? Explain with the help of copper oxide as an example.
FILL IN THE BLANK
The compounds of carbon and hydrogen are called .................
Give equations for the reactions.
How is hydrogen separated from carbon dioxide and carbon monoxide?
Using a burning candle and a jar of hydrogen – how would you prove experimentally that Hydrogen does not support combustion.
Give a test to differentiate between two gas jars – one containing pure hydrogen and the other hydrogen-air mixture.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
Name a gas which burns in air or oxygen forming water.
Write a correctly balanced equation for the following:
When steam is passed over red hot iron.
Explain the following:
Two jars of H2 are collected – “one burns quietly and the other does not”.
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
How would you obtain ‘hydrogen from sodium hydroxide’ solution other than by electrolysis?
