This chapter is currently out of syllabus
1
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The higher concentration of which gas in air can cause stiffness of flower buds?
A
CO2
B
SO2
C
NO2
D
CO
2
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Taj Mahal is being slowly disfigured and discoloured. This is primarily due to :
A
acid rain
B
soil pollution
C
global warming
D
water pollution
3
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The concentration of dissolved oxygen (DO) in cold water can go upto :
A
14 ppm
B
16 ppm
C
8 ppm
D
10 ppm
4
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Peroxyacetyl nitrate (PAN), an eye irritant is produced by :
A
classical smog
B
acid rain
C
photochemical smog
D
organic waste
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