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प्रश्न
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
विकल्प
Fe
Cu
Mg
Zn
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उत्तर
Mg
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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.
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
Give an equation to express the reaction between:
Steam and red hot iron
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 Cold water? Write the balanced equation.
Which metal is preferred for collecting hydrogen from steam? Write the balanced equation for the case.
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
What do you observe when dilute sulphuric acid is added to Zinc granules.
Name the following.
The salt formed when aluminium reacts with potassium hydroxide, during the preparation of hydrogen from alkalis.
