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प्रश्न
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
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उत्तर
Dil. H2SO4 reacts with zinc to liberate hydrogen.
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संबंधित प्रश्न
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from hot water.
Give an equation to express the reaction between:
Steam and red hot iron
Which metal is preferred for collecting hydrogen from:
Write the balanced equation
Hot water
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium
Give reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
Give a reason for the following.
Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Which metal gives hydrogen with all of the following: water, acids, alkalis?
Correct the following statement:
Very dilute nitric acid reacts with iron to produce hydrogen.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
