JEE Main 12 Jan 2019 Shift 1 Solved Paper

Section: Chemistry

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Question : 78 of 90

Marks: +1, -0

Water samples with BOD values of 4 ppm and 18 ppm, respectively, are :

[12 Jan 2019 Shift 1]

Highly polluted and Clean
Highly polluted and Highly polluted
Clean and Highly polluted
Clean and Clean

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