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प्रश्न
Explain the following reaction with one suitable example of Decomposition reaction
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उत्तर
Decomposition reaction : In this reaction a substance breaks up on heating to form two or more simpler substances, e.g. Electrolysis of water.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
heat.
FILL IN THE BLANK
The new substances formed during a chemical reaction are called the ..................
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
Write the chemical reaction where the following changes are observed.
Colour change is noticed
Explain,giving one example of the following chemical changes:
Reversible reaction
What do you observe? When
Water is added to the quick lime.
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Lead nitrate
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Zinc carbonate, Copper carbonate and lead carbonate.
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Sodium sulphide and sodium sulphite?
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A coloured substance which leaves on strong heating a black residue and evolves two colourless gases one of which is acidic and the other neutral.
Give balanced equation for the following conversion affected by heat alone on the substance:
Hydrated copper sulphate to sulphur dioxide
Complete the table given below.
| Heat on ammonium dichromate | Name of neutral gas evolved |
Give a suitable example with an equation to show the representation of a chemical reaction.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Ammonium dichromate.
_____ is the basic material to manufacture urea.
A reaction between an acid and a base is called ______.
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(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
