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Saturday, 10 October

JEE Main Chemistry · Environmental Chemistry

Fluoride Limits in Drinking Water

Fluoride Limits in Drinking Water (Environmental Chemistry) was asked 2 times in 2 JEE Main shifts, 2017–2021, out of the 42 shifts Lumi analysed.

Times asked
2
in 2 shifts
Years
2017–2021
Usual format
Assertion–reason
Conceptual
Pattern
Gone quiet
repeats across shifts

How it is asked

  • Assertion-reason on environmental chemistry
  • Identify pollutant exceeding drinking water limit

Difficulty

Easy 2Medium 0Hard 0

Where it sits

Chapter: Environmental Chemistry. Topic: Environmental Chemistry, 16 questions over 9 ideas.

Other repeat ideas in this topic

Every time it came

All 2 questions

Newest first, each with its options and official answer.

  1. 3 Aug 2021, Shift 2 · Q41Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Fluoride ion…EasyAssertion–reason
  2. 2 Apr 2017 (offline) · Q44A water sample has ppm level concentration of following anions F−=10\mathrm{F^-}=10 ; SO42−=100\mathrm{SO_4^{2-}}=100 ; NO3−=50\mathrm{NO_3^-}=50 The…EasySingle correct