1
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The $\alpha$-Helix and $\beta$ - Pleated sheet structures of protein are associated with its :

A
tertiary structure
B
quaternary structure
C
primary structure
D
secondary structure
2
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The effect of temperature on spontaneity of reactions are represented as :

$\Delta$H $\Delta$S Temperature Spontaneity
(A) $+$ $-$ any T Non spontaneous
(B) $+$ $+$ low T spontaneous
(C) $-$ $-$ low T Non spontaneous
(D) $-$ $+$ any T spontaneous

The incorrect combinations are :

A
(A) and (C) only
B
(B) and (D) only
C
(A) and (D) only
D
(B) and (C) only
3
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List - I with List - II

List - I
(Isomers of $\mathrm{C}_{10} \mathrm{H}_{14}$ )
List - II
(Ozonolysis product)
(A) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 1 (I) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 2
(B) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 3 (II) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 4
(C) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 5 (III) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 6
(D) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 7 (IV) JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Hydrocarbons Question 2 English 8

Choose the correct answer from the options given below :

A
(A) $-(\mathrm{III}),(\mathrm{B})-(\mathrm{IV}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-$ (II)
B
$(\mathrm{A})-(\mathrm{I}),(\mathrm{B})-(\mathrm{IV}),(\mathrm{C})-(\mathrm{III}),(\mathrm{D})-(\mathrm{II})$
C
$(\mathrm{A})-(\mathrm{III}),(\mathrm{B})-(\mathrm{II}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{IV})$
D
$(\mathrm{A})-(\mathrm{II}),(\mathrm{B})-(\mathrm{II}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{IV})$
4
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the products [A] and [B], respectively in the following reaction:

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English

A
JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 1
B
JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 2
C
JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 3
D
JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 7 English Option 4
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