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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 forms a base which is insoluble in water.
Give an equation to express the reaction between:
Steam and red hot iron
Give an equation to express the reaction between:
Calcium and water
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?
Select the odd one out and justify your answer.
Fe, Zn, Cu and Mg
Which metal gives hydrogen with all of the following: water, acids, alkalis?
Choose terms from the options given in brackets to complete this sentence.
Sodium ………………. reacts smoothly with cold water.
(metal, amalgam, in the molten state)
What do you observe when dilute sulphuric acid is added to Zinc granules.
State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.
