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प्रश्न
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
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उत्तर
Ammonia [NH3]: Bring a glass rod dipped in cone. HCl gives dense white fumes. Turns nessler’s reagent from colourless to pale-brown.
Hydrogen chloride [HCl]: Bring a glass rod dipped in cone. HCl, no white fumes. No-action with nessler’s reagent.
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संबंधित प्रश्न
Indicate which of the following statement is true and which is false:
The hydrogen molecule is monovalent.
Complete and balance the following equation:
H2+____________→ 2HCI
Give reason for the following:
A pop sound produced when hydrogen is burnt?
Give reason for the following:
Helium replaced hydrogen in weather observation balloons?
Give a balanced chemical equation for the reaction.
Multiple Choice Question
Hydrogen is responsible for producing
Multiple Choice Question
Hydrogen is
FILL IN THE BLANK
In nature, hydrogen occurs as a .................. molecule represented as H2
How is hydrogen separated from carbon dioxide and carbon monoxide?
Give balanced equation for the following conversion:
Water gas to hydrogen – industrially.
Write a correctly balanced equation for the following “word equation”:
calcium + water → calcium hydroxide + hydrogen
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When steam is passed over red hot iron.
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’.
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
Write balanced equation of the reaction in the preparation of : hydrogen from a solution of potassium hydroxide [other than by electrolysis].
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
Give balanced equation for obtaining hydrogen from cold water using a divalent active metal.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
