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प्रश्न
Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is ______.
विकल्प
White
Brown
Green
Pale blue
उत्तर
Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is green.
\[\ce{\underset{(Dirty Green , (Colourless) gelatinous ppt.)}{FeSO4 + 2NaOH -> Fe(OH)2} + Na2SO4}\]
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- Copper nitrate
- Iron (II) sulphate
- Iron (III) chloride
- Lead nitrate
- Magnesium sulphate
- Zinc chloride
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| 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.
