1.

Explain Why -(a) Soap cannot be used in hard water .(b) Oil does not mix in water . However, oil and water become homogeneous if a sufficient quantity of detergent is added .(c) Synthetic detergents are superior to soap .(d) Often coloured spots are formed on clothes during washing .(e) Tobacco masheri​ should not be used for cleaning teeth.

Answer» Explain Why -



(a) Soap cannot be used in hard water .

(b) Oil does not mix in water . However, oil and water become homogeneous if a sufficient quantity of detergent is added .

(c) Synthetic detergents are superior to soap .

(d) Often coloured spots are formed on clothes during washing .

(e) Tobacco masheri​ should not be used for cleaning teeth.


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