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प्रश्न
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
What do you observe when a few drops of red litmus solution are added to the turbid solution.
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उत्तर
If dilute hydrochloric acid is added to the turbid solution, then they react and neutralize each other, forming the soluble salt calcium chloride (CaCl2) and water.
Ca(OH)2 + 2HCl → CaCl2 + 2H2O
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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.
From the knowledge of activity series, name a metal which shows the following properties:
It forms a base which is insoluble in water.
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
Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.
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.
Select the odd one out and justify your answer.
Zn, Fe, Mg, and Na
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.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
