Question

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Answer 1

Q4.i)a) Ans:-When electric current is passed through water, water dissociates into hydrogen and oxygen. Hydrogen is deposited over negative pole and oxygen is deposited over positive pole.

b)Ans:- When a piece of moist red litmus paper is placed in a jar of ammonia it is turned to blue as the ammonia gas is basic in nature and this property converts the red litmus to blue.

ii) Ans:-A Word equation is only qualitative because it does not give any idea about number of atoms and molecules are reacting and formed.

Answer 2

Answer:

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Explanation:

a).When electric current is passed through water, water dissociates into hydrogen and oxygen. Hydrogen is deposited over negative pole and oxygen is deposited over positive pole.

b).When a piece of moist red litmus paper is placed in a jar of ammonia it is turned to blue as the ammonia gas is basic in nature and this property converts the red litmus to blue. This litmus paper test confirms the alkalinity of the ammonia gas.

c).Word equation is only qualitative because it does not give any idea about number of atoms and molecules are reacting and foemed.