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1
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
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-1
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The photochemical smog does not generally contain :

A
NO
B
NO2
C
SO2
D
HCHO
2
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
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The acid that is believed to be mainly responsible for the damage of Taj Mahal is :

A
sulfuric acid.
B
hydrofluoric acid.
C
phosphoric acid.
D
hydrochloric acid.
3
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
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Correct statement about photo-chemical smog is :

A
It occurs in humid climate.
B
It is a mixture of smoke, fog and SO2.
C
It is reducing smog.
D
It results from reaction of unsaturated hydrocarbons.
4
JEE Main 2022 (Online) 27th June Evening Shift
MCQ (Single Correct Answer)
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-1
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On the surface of polar stratospheric clouds, hydrolysis of chlorine nitrite gives A and B while its reaction with its reaction with HCl produces B and C. A, B and C are, respectively :

A
HOCl, HNO3, Cl2
B
Cl2, HNO3, HOCl
C
HClO2, HNO2, HOCl
D
HOCl, HNO2, Cl2O
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