JEE Main 2020 (Online) 4th September Morning Slot | Environmental Chemistry Question 43 | Chemistry

JEE Main 2020 (Online) 4th September Morning Slot

MCQ (Single Correct Answer)

-1

Match the following :

(i) Foam	(a) smoke
(ii) Gel	(b) cell fluid
(iii) Aerosol	(c) jellies
(iv) Emulsion	(d) rubber
	(e) froth
	(f) Milk

(i)-(e), (ii)-(c), (iii)-(a), (iv)-(f)

(i)-(d), (ii)-(b), (iii)-(a), (iv)-(e)

(i)-(d), (ii)-(b), (iii)-(e), (iv)-(f)

(i)-(b), (ii)-(c), (iii)-(e), (iv)-(d)

JEE Main 2020 (Online) 3rd September Evening Slot

MCQ (Single Correct Answer)

-1

The incorrect statement(s) among (a) – (d) regarding acid rain is (are) :

(a) It can corrode water pipes.
(b) It can damage structures made up of stone.
(c) It cannot cause respiratory ailments in animals.
(d) It is not harmful for trees

(a), (b) and (d)

(a), (c) and (d)

JEE Main 2020 (Online) 3rd September Morning Slot

MCQ (Single Correct Answer)

-1

Thermal power plants can lead to :

Ozone layer depletion

Blue baby syndrome

Eutrophication

Acid rain

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

The statement that is not true about ozone is :

In the stratosphere, CFCs release chlorine free radicals (Cl) which reacts with O₃ to give chlorine dioxide radicals

It is a toxic gas and its reaction with NO gives NO₂.

In the atmosphere, it is depleted by CFCs

In the stratosphere, it forms a protective shield against UV radiation

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