The maximum possible value of Plasticty Index (IP) for a soil with Liquid Limit (LL) of 45% and Plastic Limit (PL) of 20% is:
A15%
B25%
C35%
D65%
Explanation
Plasticity Index IP = Liquid Limit (LL) – Plastic Limit (PL) = 45% – 20% = 25%.

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