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प्रश्न
Explain the following reaction with one suitable example of Displacement reaction.
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उत्तर
Displacement reaction: In this reaction a more reactive element displaces a less reactive element from its compound, e.g. Reaction of iron with copper sulphate.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
catalyst .
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
Name the type of chemical reaction shown by the following equation:
2Mg + O2 → 2MgO
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Sodium chloride
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.
Give an example of a reaction where the following are involved
Electricity
What do you observe? When
Barium chloride is added to sodium sulphate solution
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
Give reason for the following:
The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌}
between the reactants and products, formed in the chemical reaction.
Complete the table given below.
| Addition of dil. H2SO4 to zinc | Test for gas evolved |
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
State the following reaction represent oxidation or reduction.
\[\ce{Ag->Ag+}\]
NPK are the primary nutrients for plants.
Explain how the painting of an iron gate prevents it from rusting.
