Question

Definations and two examples each for chemical reactions and their types of 10th std

Answer 1

COMBINATION REACTION:- When two or more reactants combine to form a single product then it is called combination reaction.

Ex:- C+ O₂------> CO₂

      2H₂+ O₂-------> 2H₂O

DECOMPOSITION REACTION:- When a single reactant decomposes to form two or more products then it is called decomposition reaction.

Ex:- 2H₂O------> 2H₂+ O₂

       CaCO₃------> CaO+ CO₂

DISPLACEMENT REACTION:- When a more reactive element displaces a less reactive element from its compound then it is called displacement reaction.

Ex:- Zn+ CuSO₄--------> ZnSO₄+ Cu

     Fe+ CuSO₄---------> FeSO₄+ Cu

DOUBLE DISPLACEMENT REACTION:- The reactions in which their is a exchange of ions between their reactants is called a double displacement reaction.

Ex:- BaSO₄+ 2NaCl-------> BaCl₂+ Na₂SO₄

      BaCl₂+ Na₂SO₄------> 2NaCl+ BaSO₄

REDOX REACTION:- Redox reactions are the reactions involving the oxidation of one substance and the reduction of the other.

Ex:- ZnO+ C------> CO+ Zn

      CH₄+ 2O₂-------> CO₂+ 2H₂O (Carbon is oxidised and Oxygen is reduced)

Answer 2

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The 5 primary types of chemical reactions are: Combination reaction. Decomposition reaction.

Combination Reaction. A reaction in which two or more reactants combine to form a single product is known as a combination reaction. ...

Decomposition Reaction. ...

Displacement Reaction. ...

Double Displacement Reaction. ...

Precipitation Reaction.