Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm.(A) 20 (B) 100 (C) 400 (D) 200

Death may occur, when SO2 concentration in atmospheric air exceeds
__________ ppm.
(A) 20
(B) 100
(C) 400
(D) 200
by

1 Answer

Answer :

(C) 400
by

Related questions

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Last Answer : (D) 3000 (i.e. 0.3%

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