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1
BITSAT 2025
MCQ (Single Correct Answer)
+3
-1

The central atom shows $d$-orbital participation in hybridisation in

A

$\mathrm{XeF}_2$

B

$\mathrm{SO}_2$

C

$\mathrm{NH}_4^{+}$

D

$\mathrm{CH}_4$

2
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The bond dissociation energy of $ X_{2}, Y_{2} $ and $ X Y $ are in the ratio of $ 1: 0.5: 1 . \Delta H $ for the formation of $ X Y $ is $ -200 \mathrm{~kJ} / \mathrm{mol} $. The bond dissociation energy of $ X_{2} $ will be
A
$ 200 \mathrm{~kJ} / \mathrm{mol} $
B
$ 100 \mathrm{~kJ} / \mathrm{mol} $
C
$ 400 \mathrm{~kJ} / \mathrm{mol} $
D
$ 800 \mathrm{~kJ} / \mathrm{mol} $
3
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The hybridisation scheme for the central atom includes a $ d $-orbital contribution in
A
$ I_{3}^{-} $
B
$ \mathrm{PCl}_{3} $
C
$ \mathrm{NO}_{3}^{-} $
D
$ \mathrm{H}_{2} \mathrm{Se} $
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

In $$\mathrm{BrF}_3$$ molecule, the lone pairs occupy equatorial positions to minimise

A
lone pair-bond pair repulsion only
B
bond pair-bond pair repulsion only
C
lone pair-lone pair repulsion and lone pair-bond pair repulsion
D
lone pair-lone pair repulsion only
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