EXPERT PLS SEND ANSWER URGENTLY!!!

Solution:

Moles of sugar = 1 mol Mass of sugar = Mole×Molar mass                           = 1 × 342 = 342 gMoles of water = 3 molMass of water = 3 × 18 = 54 gRelative lowering of vapour pressure = P10-PP10 = W2/M2W1/M1+W2/M2                                                                                         = 342/342342/342 + 54/18 = 11+ 3 = 0.25

Hence, the correct option is (1).

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