Arrange the following options in ascending order of their BOD value:
1. Sample of highly polluted pond water.
2. Sample from unpolluted pond water.
3. Distilled water.

Arrange the following options in ascending order of their BOD value. I. Sample of highly polluted pond water. II. Sample from unpolluted pond water. III. Distilled water

Arrange the following options in ascending order of their BOD value. (i) Sample of highly polluted pond water. (ii) Sample from unpolluted pond water. (iii) Distilled water. (A) iii to i to ii (B) ii to iii to i (C) iii to ii to i (D) i to iii to ii

The value of BOD of highly polluted water is

BOD value of clean and polluted water:

Given the possible BOD values of clean water and the polluted water.