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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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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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