Answer :
(1) 
(2) 
(3) 
(4) 
(5) 
(6) 
(7) 
(8) 
(9) 
(10) 
Explanation :
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
Part 1 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '2' put before the 
and 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 2 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '3' put before the 
and the coefficient '2' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 3 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '2' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 4 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '2' put before the 
, the coefficient '3' put before the 
and the coefficient '6' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 5 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '6' put before the 
, the coefficient '4' put before the 
and the coefficient '4' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 6 :
The unbalanced chemical reaction is,
In order to balance the chemical equation, the coefficient '2' put before the 
and then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 7 :
The unbalanced chemical reaction is,
In order to balance the chemical equation,the coefficient '2' put before the 
, the coefficient '5' put before the , the coefficient '4' put before the and the coefficient '2' put before the then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 8 :
The unbalanced chemical reaction is,
In order to balance the chemical equation,the coefficient '2' put before the 
, the coefficient '3' put before the 
and the coefficient '6' put before the then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 9 :
The unbalanced chemical reaction is,
In order to balance the chemical equation,the coefficient '3' put before the 
and the coefficient '3' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
Part 10 :
The unbalanced chemical reaction is,
In order to balance the chemical equation,the coefficient '2' put before the 
then we get the balanced chemical equation.
The balanced chemical reaction will be,
