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JEE Main 201912 JanuaryMorning Shift
Exam
JEE Main
Year
2019
Date
12 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Environmental Chemistry

JEE Main 2019 · 12 January · Morning Shift · Chemistry · Environmental Chemistry

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

Water samples with BODBOD values of 44 ppm and 1818 ppm, respectively, are:

Options

  1. AHighly polluted and Highly polluted
  2. BClean and Clean
  3. CHighly polluted and Clean
  4. DClean and Highly polluted

Correct answer

D. Clean and Highly polluted

Step-by-step solution

Clean water has a BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of 1717ppm so more polluted.
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