. 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.
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