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प्रश्न
What do you observe when hydrogen gas is passed through a soap solution?
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उत्तर
On passing hydrogen gas through soap solution, soap bubbles filled with hydrogen fly high and burst. This behavior proves that hydrogen is lighter than air.
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संबंधित प्रश्न
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
Thin strips of magnesium, copper, and iron are taken.
Arrange these metals in descending order of reactivity.
Which metal is preferred for collecting hydrogen from:
Write the balanced equation
Hot water
Which metal is preferred for collecting hydrogen from steam? Write the balanced equation for the case.
Select the odd one out and justify your answer.
SO2, H2S, NH3, and CO3
Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Using dilute sulphuric acid how would you differentiate between:
Copper and magnesium
How would you identify the gaseous products evolved.
State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.
‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.
