1
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The processes of calcination and roasting in metallurgical industries, respectively, can Iead to :
A
Global warming and photochemical smog
B
Photochemical smog and ozone layer depletion
C
Photochemical smog and global warming
D
Global warming and acid rain
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-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
A
(i)-(e), (ii)-(c), (iii)-(a), (iv)-(f)
B
(i)-(d), (ii)-(b), (iii)-(a), (iv)-(e)
C
(i)-(d), (ii)-(b), (iii)-(e), (iv)-(f)
D
(i)-(b), (ii)-(c), (iii)-(e), (iv)-(d)
3
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-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
(c) and (d)
B
(a), (b) and (d)
C
(c) only
D
(a), (c) and (d)
4
JEE Main 2020 (Online) 3rd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Thermal power plants can lead to :
A
Ozone layer depletion
B
Blue baby syndrome
C
Eutrophication
D
Acid rain
JEE Main Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET