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प्रश्न
Give a reason why a catalyst is used in certain chemical reactions.
उत्तर
A catalyst is used to make the reaction fast or slow down it. When KClO3 is heated, oxygen is produced but the reaction is very slow. If we add MnO2 to KClO3 and heat the rate of production of oxygen becomes faster.
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संबंधित प्रश्न
What do you observe when Lead nitrate is heated.
Give two examples Basic oxide .
Give two examples of oxides.
Amphoteric oxide
A chemical reaction may be ‘reversible’ in nature. State the meaning of the term in italics.
State the meaning of the term ‘oxide’.
Give a balanced equation for the formation of the following oxide –
Sulphur dioxide from a non-metal
Give a balanced equation for the formation of the following oxide –
Lead oxide from a mixed Oxide.
Give the example of the acidic oxide, basic oxide, amphoteric oxide and neutral oxide. State which of the oxide react with water to give a base.
Give the example of the acidic oxide, basic oxide, amphoteric oxide and neutral oxide. State which of the oxide react with a base to give salt and water.
Differentiate between the following:
An acidic oxide and a basic oxide.
