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प्रश्न
A metal which produces hydrogen on reacting with alkali as well as with acid.
विकल्प
Iron
Magnesium
Zinc
Copper
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उत्तर
Zinc
Explanation:
With base: \[\ce{Zn + 2NaOH -> \underset{\text{Sodium zincate (Colourless)}}{Na2ZnO2 + H2}}\]
With acid: \[\ce{Zn + 2HCl -> ZnCl2 + H2}\]
APPEARS IN
संबंधित प्रश्न
Write the probable colour of the following salt:
Ferrous salts
Write the colour of the following salt : Cupric salts.
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Sodium sulphate solution and sodium chloride solution.
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.
Write balanced equation for the following reaction:
Zinc and sodium hydroxide solution
State what do you observe when:
Lead nitrate and sodium chloride are mixed.
Name the probable cation present based on the following observation:
White precipitate insoluble in NH4OH but soluble in NaOH.
Name :
a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is ______.
| Abhishek was given a salt ‘X’ which was white in colour for analysis. On strong heating, it produced a yellow residue, a colourless gas and also a reddish-brown gas. The solution of the salt ‘X’, when tested with an excess of ammonium hydroxide, produced a chalky white insoluble precipitate. |
- Name the coloured gas that evolved when Abhishek heated the salt strongly.
- Which cation was present in the sample given to Abhishek?
- Identify the salt given to Abhishek for analysis.
