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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: \[\ce{Zn + 2HCl -> ZnCl2 + H2}\]
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संबंधित प्रश्न
Write the probable colour of the following salt:
Ferrous salts
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.
Write the colour of the following salt : Calcium salts.
A metal whose alloy finds use in the construction of aircrafts in the powdered form is added to sodium hydroxide solution. A colourless gas was evolved and after reaction was over, the solution was colourless.
(a) Name the powdered metal added to sodium hydroxide solution.
(b) Name the gas evolved.
(c) Name the salt present in the colorless solution.
Fill in the blanks.
Salts of ______ [normal / transition] elements are generally coloured. From the ions K1+, Cr3+, Fe2+, Ca2+, \[\ce{SO^2-_3}\], \[\ce{Mn^1-_4}\],\[\ce{NO^1_3}\] the ions generally coloured are ______.
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.
Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is ______.
