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प्रश्न
| 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.
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उत्तर
- Nitrogen dioxide
- Lead ions
- Lead nitrate
संबंधित प्रश्न
Name a colourless cation not a representative element.
Write the probable colour of the following salt:
Iron (III) chloride
Write the probable colour of the following salt:
Ferrous sulphate
Write the probable colour of the following salts:
Calcium carbonate
Write the colour of the following salt : Cupric salts.
Write the colour of the following salt : Ferric 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 the observation, and balanced equation for the following reaction:
Moist starch iodide paper is placed at the mouth of a test tube containing chlorine gas.
Colour of an aqueous solution of copper sulphate is ______.
