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Complete the following :

1. Lyophilic sol – starch; Lyophobic sol …………..

2. Deltas are formed where rivers and seawater meets. Do you agree with this statement? Explain.

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1. Lyophobic sol – gold sol (or any other correct example).

2. Yes. River water is a colloid of clay. Seawater contains a number of electrolytes. When river water meets the seawater, the electrolytes present in seawater coagulate the colloid of clay resulting in its deposition with the formation of delta.

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