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

The incorrect relationship in the following pairs in relation to ionisation enthalpies is :

A
$\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}$
B
$\mathrm{Mn}^{+}<\mathrm{Mn}^{2+}$
C
$\mathrm{Mn}^{+}<\mathrm{Cr}^{+}$
D
$\mathrm{Fe}^{2+}<\mathrm{Fe}^{3+}$
2
JEE Main 2025 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively :

A
$\mathrm{B} ~\&~ \mathrm{Tl}$
B
$\mathrm{Tl} ~\& ~\mathrm{~B}$
C
$B ~\& ~\operatorname{In}$
D
$B ~\& ~G a$
3
JEE Main 2025 (Online) 3rd April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct orders among the following are

Atomic radius : $\mathrm{B}<\mathrm{Al}<\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}$

Electronegativity : $\mathrm{Al}<\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}<\mathrm{B}$

Density : $\mathrm{Tl}<\mathrm{In}<\mathrm{Ga}<\mathrm{Al}<\mathrm{B}$

1st Ionisation Energy : $\mathrm{In}<\mathrm{Al}<\mathrm{Ga}<\mathrm{Tl}<\mathrm{B}$

Choose the correct answer from the options given below:

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

$$ \text { Match the LIST-I with LIST-II } $$

LIST-I
(Family)
LIST-II
(Symbol of Element)
A. Pnictogen (group 15) I Ts
B Chalcogen II Og
C Halogen III Lv
D Noble gas IV Mc
Choose the correct answer from the options given below:
A
A-IV, B-I, C-II, D-III
B
A-IV, B-III, C-I, D-II
C
A-III, B-I, C-IV, D-II
D
A-II, B-III, C-IV, D-I
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