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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?
heat.
Define catalyst.
Fill in the blanK
A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Which one of the following alters the rate of the chemical reaction without itself undergoing any change?
- temperature and Pressure
- concentration of reactants
- presence of catalyst
- none of these
TRUE \ FALSE
Copper can displace iron from iron sulphate.
Write true or false .
A black residue is formed when sugar is heated .
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Oxygen is a ______ in respiration.
Explain by writing a word equation.
Limestone powder disappears on adding to dilute hydrochloric acids.
Give an example of a reaction where the following are involved:
Close contact
Give an example of the following chemical change.
Two gases combine to form white solid
What is a chemical change? Give two examples of chemical change?
Distinguish by heating the following in dry test tubs.
Ammonium Chloride and iodine.
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
Heat may evolve or be absorbed during a ______ change.
The chemical formula of rust is ______.
What are the chemical reactions that occur in everyday life?
