JEE Main202227 Jul 2022Morning ShiftChemistryEnvironmental ChemistryActual
Match List I with List II List-I Pollutant List-II Disease /sickness A Sulphate > 500 ppm I Methemoglobinemia B Nitrate > 50 ppm II Brown mottling of teeth C Lead > 50 ppb III Laxative effect D Fluoride > 2 ppm IV Kidney damage Choose the correct answer from the options given below
Options
- AA - IV , B - I , C - II , D - III
- BA - III , B - I ,   C - IV , D - II
- CA - II , B - IV , C - I , D - III
- DA - II , B - IV , C - III , D - I
Correct answer
B. A - III , B - I ,   C - IV , D - II
Step-by-step solution
F - ion concentration above 2   ppm causes brown mottling of teeth. At the same time, excess fluoride (over 10   ppm ) causes harmful effect to bones and teeth Lead: Drinking water gets contaminated with lead when lead pipes are used for transportation of water. The prescribed upper limit concentration of lead in drinking water is about 50   ppb . Lead can damage kidney, liver, reproductive system etc. Sulphate: Excessive sulphate > 500   ppm in drinking water causes laxative effect, otherwi