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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: \[\ce{Zn + 2HCl -> ZnCl2 + H2}\]
संबंधित प्रश्न
Write the probable colour of the following salt:
Cupric salts
Name a colourless cation not a representative element.
Write the probable colour of the following salt:
Iron (III) chloride
Write the colour of the following salts: Cuprous salts.
Write the colour of the following salt : Ferric salts.
On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (Choose from Na, l, Zn, Pb, Fe)
(a) Which metal salt solution was used?
(b) What is the formula of white gelatinous precipitate obtained?
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'.
Write balanced equation for the following reaction:
Iron(II) chloride solution with sodium hydroxide solution.
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 ______.
