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1
JEE Main 2022 (Online) 29th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which among the following pairs has only herbicides?

A
Aldrin and Dieldrin
B
Sodium chlorate and Aldrin
C
Sodium arsinate and Dieldrin
D
Sodium chlorate and sodium arsinite
2
JEE Main 2022 (Online) 28th July Morning Shift
MCQ (Single Correct Answer)
+4
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Given below are two statements:

Statement I : In polluted water values of both dissolved oxygen and $$\mathrm{BOD}$$ 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 :

A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
3
JEE Main 2022 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Given below are two statements:

Statement I : The non bio-degradable fly ash and slag from steel industry can be used by cement industry.

Statement II : The fuel obtained from plastic waste is lead free.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
4
JEE Main 2022 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II.

List I

Pollutant
List II

Disease/sickness
(A) Sulphate (>500 ppm) (I) Methemoglobinemia
(B) Nitrate (>50 ppm) (II) Brown mottling of teeth
(C) Lead (>50 ppb) (III) Laxative effect
(D) Fluoride (>2 ppm) (IV) Kidney damage

Choose the correct answer from the options given below :

A
A-IV, B-I, C-II, D-III
B
A-III, B-I, C-IV, D-II
C
A-II, B-IV, C-I, D-III
D
A-II, B-IV, C-III, D-I
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