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प्रश्न
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
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उत्तर
The conversion of ferrous sulphate to ferric sulphate is an oxidation reaction.
Explanation:
Oxidation means losing one or more electrons. During this conversion, Fe2+ is converted into Fe3+ by losing one electron. Therefore, it is an oxidation reaction.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
pressure.
How do the following help in bringing about a chemical change?
catalyst .
Fill in the blank
A new substance is always formed in a _______ change.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
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Fe + H2O → Fe3O4 + H2
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Pressure
Give reason for the following:
Blue solution of copper sulphate changes to green when a piece of iron is added to this solution.
Explain,giving one example of the following chemical changes:
Reversible reaction
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Ammonium dichromate
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Zinc carbonate
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Sodium Sulphide
Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation. State the function of the arrow between the reactants and products.
Give reason for the following:
A characteristic change of colour is seen when a piece of iron is added to copper [II] sulphate solution.
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A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.
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Calcium hydroxide.
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When a candle burns, both physical and chemical changes take place.
How can we prevent rusting?
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