1
WB JEE 2025
MCQ (Single Correct Answer)
+1
-0.25

Which of the following oxides is paramagnetic?

A
$\mathrm{SO}_2$
B
$\mathrm{NO}_2$
C
$\mathrm{SiO}_2$
D
$\mathrm{CO}_{\mathbf{2}}$
2
WB JEE 2025
MCQ (Single Correct Answer)
+1
-0.25

The bond order of $\mathrm{HeH}^{+}$is

A
1
B
2
C
3
D
4
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25

Which of the following contains maximum number of lone pairs on the central atom?

A
ClO$$_3^-$$
B
XeF$$_4$$
C
SF$$_4$$
D
I$$_3^-$$
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25

The molecular shapes of SF$$_4$$, CF$$_4$$ and XeF$$_4$$ are

A
the same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively.
B
the same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively.
C
different with 0, 1 and 2 lone pairs of electrons on the central atoms, respectively.
D
different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively.
WB JEE Subjects