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प्रश्न
Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.
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उत्तर
Cold water: Calcium
\[\ce{Ca + 2H2O → Ca(OH)2 + H2}\]
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
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:
Calcium and water
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium
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?
Select the odd one out and justify your answer.
Fe, Zn, Cu and Mg
Helium is preferred to hydrogen for filling balloons because it is:
Which of the following metals does not give hydrogen with acids?
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.
