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प्रश्न
From the formulae listed below, Choose, one, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4, 7H2O.
On heating this, salt changes from green to black.
उत्तर
On heating CuCO3, CuO is formed which is black in colour.
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संबंधित प्रश्न
Give a balanced chemical equation for Action of conc. Nitric acid on Sulphur
Name the gas that is produced in the given cases :
Sulphur is oxidized by concentrated nitric acid.
What is fixation of Nitrogen?
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of \[\ce{HNO3}\]. State the reason.
Write the equation to show the reaction between the following:
Between copper and concentrated nitric acid.
Write equation to show the reaction between the following:
Copper and concentrated nitric acid.
Write equation to show the reaction between the following:
Copper oxide and dilute nitric acid.
Fill in the blank using the appropriate words given below:
Hot, concentrated nitric add reacts with sulphur to form ______.
Write a balanced equation for following :
Action of cold and dilute nitric acid on copper
Write a balanced equation for following :
Action of conc. Nitric acid on sulphur
