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प्रश्न
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
Write a word equation for the chemical change, if any.
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उत्तर
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संबंधित प्रश्न
Complete and balance the following chemical equation:
\[\ce{Pb(NO3)2 ->[Heat]}\]
Fill in the blank:
In some chemical reactions an insoluble ________ is formed when two solutions are mixed.
Give an example of the following chemical change.
A reaction where colour change is noticed
Multiple choice:
Thermal decomposition of sodium carbonate will produce
What do you observe? When
Sodium chloride solution is added to silver nitrate solution.
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
Select the correct answer for the following options:
The gas which reacts with oxygen to give a neutral liquid.
Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the reaction.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Calcium hydroxide.
