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1
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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The possibility of photochemical smog formation will be minimum at :
A
Mumbai in May
B
Kolkata in October
C
New-Delhi in August (Summer)
D
Srinagar, Jammu and Kashmir in January
2
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Which of the following are the Green house gases?

A. Water vapour

B. Ozone

C. I$$_2$$

D. Molecular hydrogen

Choose the most appropriate answer from the options given below :

A
A and D only
B
A and B only
C
B and C only
D
C and D only
3
JEE Main 2023 (Online) 13th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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The radical which mainly causes ozone depletion in the presence of UV radiations is :

A
$$\mathrm{NO}^\cdot$$
B
$$\mathrm{CH}_{3} ^\cdot$$
C
$$\dot{\mathrm{Cl}}$$
D
$$\dot{\mathrm{O}} \mathrm{H}$$
4
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Match List I with List II

LIST I LIST II
A. Nitrogen oxides in air I. Eutrophication
B. Methane in air II. pH of rain water becomes 5.6
C. Carbon dioxide III. Global warming
D. Phosphate fertilisers in water IV. Acid rain

Choose the correct answer from the options given below :

A
A-II, B-III, C-I, D-IV
B
A-I, B-II, C-III, D-IV
C
A-IV, B-II, C-III, D-I
D
A-IV, B-III, C-II, D-I
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