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प्रश्न
Name the probable cation present based on the following observation:
White precipitate insoluble in NH4OH but soluble in NaOH.
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उत्तर
Pb2+
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संबंधित प्रश्न
Write the probable colour of the following salt:
Calcium salts
Name a colourless cation not a representative element.
Write the probable colour of the following salt:
Potassium nitrate
Write the probable colour of the following salts:
Calcium carbonate
Write the colour of the following salt : Cupric 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.
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'.
Calcium nitrate solution and zinc nitrate solution.
Write balanced equation for the following reaction:
Chlorine and cold dilute sodium hydroxide 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.
