1
JEE Main 2025 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Let us consider a reversible reaction at temperature, T. In this reaction, both $\Delta \mathrm{H}$ and $\Delta \mathrm{S}$ were observed to have positive values. If the equilibrium temperature is Te , then the reaction becomes spontaneous at:

A
$\mathrm{Te}>\mathrm{T}$
B
$\mathrm{T}>\mathrm{Te}$
C
$\mathrm{T}=\mathrm{Te}$
D
$\mathrm{Te}=5 \mathrm{~T}$
2
JEE Main 2025 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following molecule(s) show/s paramagnetic behavior?

A. $\mathrm{O}_2$

B. $\mathrm{N}_2$

C. $\mathrm{F}_2$

D. $\mathrm{S}_2$

E. $\mathrm{Cl}_2$

Choose the correct answer from the options given below:

A
A & C only
B
A & E Only
C
A & D Only
D
B Only
3
JEE Main 2025 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the pair of reactants that upon reaction, with elimination of HCl will give rise to the dipeptide Gly-Ala.

A
JEE Main 2025 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 3 English Option 1
B
JEE Main 2025 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 3 English Option 2
C
JEE Main 2025 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 3 English Option 3
D
JEE Main 2025 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 3 English Option 4
4
JEE Main 2025 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are the pairs of group 13 elements showing their relation in terms of atomic radius. $(\mathrm{B}<\mathrm{Al}),(\mathrm{Al}<\mathrm{Ga}),(\mathrm{Ga}<\mathrm{In})$ and $(\mathrm{In}<\mathrm{Tl})$ Identify the elements present in the incorrect pair and in that pair find out the element (X) that has higher ionic radius $\left(\mathrm{M}^{3+}\right)$ than the other one. The atomic number of the element $(\mathrm{X})$ is

A
49
B
81
C
31
D
13
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