The measured BOD values for four different water sample (A-D) are as follows \(\mathrm{A}=3\mathrm{ppm};\mathrm{B}=18\mathrm{ppm};\mathrm{C}=21\) \(\mathrm{ppm};\mathrm{D}=4\mathrm{ppm}\). The water samples which can be called as highly polluted with organic wastes, are

[JEE Main 2022, 26 June (Shift 2)]

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The measured BOD values for four different water sample (A-D) are as follows \(\mathrm{A}=3\mathrm{ppm};\mathrm{B}=18\mathrm{ppm};\mathrm{C}=21\) \(\mathrm{ppm};\mathrm{D}=4\mathrm{ppm}\). The water samples which can be called as highly polluted with organic wastes, are

[JEE Main 2022, 26 June (Shift 2)]

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The measured BOD values for four different water sample (A-D) are as follows \(\mathrm{A}=3\mathrm{ppm};\mathrm{B}=18\ma…

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