JEE Main 2022 · 28 Jul · Shift 1 · Chemistry Q71

ChemistrySingle correct+4 / -1Question 71 of 90

Given below are two statements :

Statement I : In polluted water values of both dissolved oxygen and BOD are very low.

Statement II : Eutrophication results in decrease in the amount of dissolved oxygen.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: D

Statement I. Polluted water has low dissolved oxygen but high BOD. False.

Statement II. Eutrophication depletes dissolved oxygen. True.

(D)

Topics:Water and soil pollution

JEE Main 2022 · 28 Jul · Shift 1, Chemistry question 71