JEE Main 2021 (Online) 17th March Evening Shift | Environmental Chemistry Question 50 | Chemistry

Which of the following statement(s) is (are) incorrect reason for eutrophication?

(A) excess usage of fertilisers

(B) excess usage of detergents

(C) dense plant population in water bodies

(D) lack of nutrients in water bodies that prevent plant growth

Choose the most appropriate answer from the options given below :

(A) Only

(B) and (D) only

(D) only

JEE Main 2021 (Online) 17th March Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Reducing smog is a mixture of :

Smoke, fog and O₃

Smoke, fog and N₂O₃

Smoke, fog and CH₂ = CH $$-$$ CHO

Smoke, fog and SO₂

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The green house gas/es is (are) :

(A) Carbon dioxide

(B) Oxygen

(C) Water vapour

(D) Methane

Choose the most appropriate answer from the options given below :

(A) and (C) only

(A) and (B) only

(A), (C) and (D) only

(A) only

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The type of pollution that gets increased during the day time and in the presence of O₃ is :

Oxidising smog

Global warming

Acid rain