Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Environmental Chemistry

NTA Abhyas 2020 · Chemistry · Environmental Chemistry

A water sample has ppm level concentration of following anions, F^...

A water sample has ppm level concentration of following anions, F−=10;SO42−=100;NO3−=50F^{-} = 10; S{O}_{4}^{2 -} = 100; N{O}_{3}^{-} = 50. The anion/anions that make/makes the water sample unsuitable for drinking is/are

Options

  1. Aonly F−F^{-}
  2. Bonly SO42−S{O}_{4}^{2 -}
  3. Conly NO3−N{O}_{3}^{-}
  4. Dboth SO42−S{O}_{4}^{2 -} and NO3−N{O}_{3}^{-}

Correct answer

A. only F−F^{-}

Step-by-step solution

Above 500 ppm of SO42−S{O}_{4}^{2 -} ions in drinking water, can cause laxative effect otherwise lesser ppm value is permissible for drinking.

Maximum limit of NO3−N{O}_{3}^{-} ions in drinking water is 50 ppm, above this limit it can cause the disease like methemoglobinemia.

More than 1 ppm F−F^{-} ions in drinking water are not fit for drinking, it can cause decay of bones and teeth.
Practice Environmental Chemistry on Quantrex Academy →

More from Environmental Chemistry

The possibility of photochemical smog formation will be minimum at JEE Main 2023Which of the following are the Green house gases? A. Water vapour B.Ozone C. I _ 2… JEE Main 2023The radical which mainly causes ozone depletion in the presence of UV radiations is : JEE Main 2023Match List I with List II List I List II A Nitrogen oxides in air I Eutrophication B… JEE Main 2023Which of the following compounds is an example of Freon? JEE Main 2023Given below are two statements : Statement-I : If BOD is 4ppm and dissolved oxygen is… JEE Main 2023The delicate balance of CO _ 2 and O _ 2 is NOT disturbed by JEE Main 2023Match List I with List II List I Industry List II Waste Generated (A) Steel plants (I)… JEE Main 2023 Full Environmental Chemistry list All NTA Abhyas JEE Main PYQs