Question

Assertion: In electrolysis of water, the volume of hydrogen liberated is twice the volume of oxygen
formed.
Reason: Water has hydrogen and oxygen in the ratio 1:2 by volume.
O
i) Both A and R are true and R is correct explanation of the assertion.
O
ii) Both A and Rare true but R is not the correct explanation of the assertion.
iii) A is true but R is false.
iv) A is false but R is true.​

Answer 1

Answer:

5. Assertion (A):In electrolysis of water, the volume of hydrogen liberated is twice the volume of oxygen formed.Reason (R):Water (HO) has hydrogen and oxygen in the ratio of 1:2 by volume.6. Assertion(A):Corrosion of iron is commonly known as rusting.Reason (R):Corrosion of iron occurs in presence of water and air7. Assertion(A):The balancing of chemical equations is based on law of conservation of mass.Reason (R):Total mass of reactants is equal to total mass of products

Explanation:

Answer 2

ANSWER:-

• iii) A is true but R is false is the correct option.

EXPLANATION:-

Assertion: In electrolysis of water, the volume of hydrogen liberated is twice the volume of oxygenformed.

• A is True

• In the electrolysis of water, it is observed that the ratio of volumes of hydrogen and oxygen which is obtained is 2:1. This means that 2 volumes of hydrogen and 1 volume of oxygen will combine for the formation of water. Hence it refers that the volume of hydrogen that is liberated is twice the volume of oxygen which is formed.

Reason: Water has hydrogen and oxygen in the ratio 1:2 by volume.

• R is False

• Because water has hydrogen and oxygen in the ratio of 2:1 by volume which means that water is made up of 2 parts of hydrogen and 1 part of oxygen by volume.

Hence, A is true but R is false.

#SPJ2