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प्रश्न
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
उत्तर
Calcium + water → calcium hydroxide + hydrogen
संबंधित प्रश्न
Hydrogen can be prepared with the metal zinc by using: alkali
Give an equation.
Give an equation to express the reaction between:
Calcium and 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.
Thin strips of magnesium, copper, and iron are taken.
Write down what happens when these metals are treated as follows:
- Heated in presence of air
- Heated with dil.HCl
- Added to an aqueous solution of zinc sulphate.
Which metal is preferred for collecting hydrogen from:
Write the balanced equation
Hot water
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.
SO2, H2S, NH3, and CO3
Select the odd one out and justify your answer.
Fe, Zn, Cu and Mg
Which of the following metals does not give hydrogen with acids?
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
