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प्रश्न
Distinguish by heating the following in dry test tubs.
Copper Sulphate and copper carbonate
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उत्तर
| Copper sulphate | Copper carbonate | |
| Residue left | Anhydrous(CuSO4) | Copper oxide(CuO) |
| Colour of residue | The colour of the residue is Dirty white. | The colour is black solid. |
| Gas produced | Water vapour (H2O) is produced. | Carbon dioxide(Co2) is produced. |
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
heat.
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.
Explain the term reactant and product giving examples.
Burning of paper is the best example of ______ change.
Write word equations for two chemical reactions with the help of materials given in the box.
| Air, copper sulphate, iron, vinegar, iron oxide, carbon dioxide, iron sulphate, copper, lime water, water |
Beating an egg to make a cake is a ______.
______ is a chemical substance is used in whitewashing.
Acid rain is a result of ______.
