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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
Fill in the blanks using the appropriate words given below :
(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)
Cold, dilute nitric acid reacts with copper to give ___________.
Write balanced equations for action of warm water on magnesium nitride
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of \[\ce{HNO3}\]. State the reason.
Write a balanced equation and name the products formed when concentrated nitric acid is heated.
Write the balanced equation for the following:
Action of heat on AgNO3
Write down the word equation or balanced equation for the action of concentrated nitric acid on copper.
Write the equation of the following reaction.
Sulphur can be converted to sulphuric acid using concentrated nitric acid.
Write balanced equation to show the reaction between the sulphur and hot concentrated nitric acid.
Fill in the blank using the appropriate words given below:
Hot, concentrated nitric add reacts with sulphur to form ______.
Write sqauential observation for effect of heat on Copper nitrate.
