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

Which of the following hydrogen bonds is likely to be the weakest?

A
$\mathrm{C}-\mathrm{H} \cdots \mathrm{O}$
B
$\mathrm{N}-\mathrm{H} \cdots \mathrm{O}$
C
$\mathrm{O}-\mathrm{H} \cdots \mathrm{O}$
D
$\mathrm{O}-\mathrm{H} \cdots \mathrm{F}$
2
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
$\mathrm{CO}_{\mathbf{2}}$
3
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
4
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$$_3^-$$
WB JEE Subjects