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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 25 June 2022, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

The eutrophication of water body results in :
  1. (1)loss of Biodiversity.Official answer
  2. (2)breakdown of organic matter.
  3. (3)increase in biodiversity.
  4. (4)decrease in BOD.

Official answer

Option 1

NTA final key.

Chapter
Environmental Chemistry
Topic
Environmental Chemistry
Idea tested
Eutrophication and Dissolved Oxygen Limits

Same idea in other shifts

Asked 5× in all
  1. 22 Jul 2021, Shift 2 · Q41The water having more dissolved O2\mathrm{O_2} is :EasySingle correct
  2. 17 Mar 2021, Shift 2 · Q41Which of the following statement(s) is (are) incorrect reason for eutrophication ? (A) excess usage of fertilisers (B) excess usage of…EasyOther
  3. 18 Mar 2021, Shift 2 · Q41Given below are two statements : Statement I : Non-biodegradable wastes are generated by the thermal power plants. Statement II :…EasyTwo statements
  4. 5 Sep 2020, Shift 1 · Q39The condition that indicates a polluted environment is :EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.