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In the figures, Group I represents the atmospheric temperature profiles (P, Q, R and S) and Group II represents dispersion of pollutants from a smoke stack (1, 2, 3 and 4). In the figures of Group I, the dashed line represents the dry adiabatic lapse rate, whereas the horizontal axis represents temperature and the vertical axis represents the altitude. Group I: P Superadiabatic; Q Adiabatic; R Inversion; S Inversion over superadiabatic Group II: 1 Looping plume; 2 Coning plume; 3 Fanning plume; 4 Fumigation The correct match is

1. (A) P-1, Q-2, R-3, S-4
2. (B) P-1, Q-2, R-4, S-3
3. (C) P-1, Q-4, R-3, S-2
4. (D) P-3, Q-1, R-2, S-4

Correct answer: (A) P-1, Q-2, R-3, S-4

Solution

Standard plume matching: superadiabatic->looping(1), adiabatic->coning(2), inversion->fanning(3), inversion over superadiabatic->fumigation(4). This is option A (P-1,Q-2,R-3,S-4), not the stored option B.

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