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JEE Main 202227 JulyMorning Shift
Exam
JEE Main
Year
2022
Date
27 July
Shift
Morning Shift
Subject
Chemistry
Chapter
Environmental Chemistry

JEE Main 2022 · 27 July · Morning Shift · Chemistry · Environmental Chemistry

Match List I with List II List-I Pollutant List-II Disease...

Match List I with List II

List-I
Pollutant		 List-II
Disease /sickness
A Sulphate (>500ppm)\left(> 500ppm\right) I Methemoglobinemia
B Nitrate (>50ppm)\left(> 50ppm\right) II

Brown mottling of teeth
C Lead (>50ppb)\left(> 50ppb\right) III Laxative effect
D Fluoride (>2ppm)\left(> 2ppm\right) IV Kidney damage

Choose the correct answer from the options given below

Options

  1. AA−IV,B−I,C−II,D−IIIA - IV, B - I, C - II, D - III
  2. BA−III,B−I,C−IV,D−IIA - III, B - I, C - IV, D - II
  3. CA−II,B−IV,C−I,D−IIIA - II, B - IV, C - I, D - III
  4. DA−II,B−IV,C−III,D−IA - II, B - IV, C - III, D - I

Correct answer

B. A−III,B−I,C−IV,D−IIA - III, B - I, C - IV, D - II

Step-by-step solution

F−{F}^{-} ion concentration above 2ppm2ppm causes brown mottling of teeth. At the same time, excess fluoride (over 10ppm10ppm) 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 50ppb50ppb. Lead can damage kidney, liver, reproductive system etc.

Sulphate: Excessive sulphate (>500ppm)\left(> 500ppm\right) in drinking water causes laxative effect, otherwise at moderate levels it is harmless.

Nitrate: The maximum limit of nitrate in drinking water is 50ppm50ppm. Excess nitrate in drinking water can cause disease such as methaemoglobinaemia ('blue baby' syndrome).

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