The correct options are
Soap is a sodium or potassium salt of fatty acids which have cleansing property in water.
∙ Sodium soaps are called hard soaps and potassium salts are called soft soaps.
∙ Hard soap is moderately soluble in water and does not produce lather easily. Whereas, soft soap dissolves faster and produces lather readily.
∙ Soft soap performs better cleansing action than hard soaps.
∙ Hard soaps are used for washing, whereas soft soaps are used for bathing.