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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.
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Name the gas formed in the reaction. How would you test the gas?
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Write an equation for the reaction.
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
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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:
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Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Choose terms from the options given in brackets to complete this sentence.
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(metal, amalgam, in the molten state)
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
