1
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Correct statement about smog is :

A
NO$$_2$$ is present in classical smog
B
Both NO$$_2$$ and SO$$_2$$ are present in classical smog
C
Photochemical smog has high concentration of oxidizing agents
D
Classical smog also has high concentration of oxidizing agents
2
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the correct order for the given property for following compounds.

JEE Main 2023 (Online) 29th January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 40 English

Choose the correct answer from the option given below :

A
(A), (B) and (E) only
B
(A), (C) and (D) only
C
(A), (C) and (E) only
D
(B), (C) and (D) only
3
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The bond dissociation energy is highest for

A
Cl$$_2$$
B
I$$_2$$
C
Br$$_2$$
D
F$$_2$$
4
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

During the borax bead test with $$\mathrm{CuSO_4}$$, a blue green colour of the bead was observed in oxidising flame due to the formation of :

A
CuO
B
Cu(BO$$_2)_2$$
C
Cu$$_3$$B$$_2$$
D
Cu
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