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1
KCET 2025
MCQ (Single Correct Answer)
+1
-0

$$ \text { Match List-I with List-II and select the correct option: } $$

List-I (Molecule / ion) List-II (Bond order)
1 . NO 1 . NO 1.NO i. 15
2 . CO 2 . CO 2.CO ii. 2.0
3 . O 2 − 3 . O 2 − 3.O_(2)^(-) iii. 2.5
4 . O 2 4 . O 2 4.O_(2) iv. 3.0
A
a-iii, b-iv, c-i, d-ii
B
a-i, b-iv, c-iii, d-ii
C
a-ii, b-iii, c-iv, d-i
D
a-iv, b-iii, c-ii, d-i
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0

The electronic configuration of X and Y are given below:

$$ \begin{aligned} & X: 1 s^2 2 s^2 2 p^6 3 s^2 3 p^3 \\ & Y: 1 s^2 2 s^2 2 p^6 3 s^2 3 p^5 \end{aligned} $$

Which of the following is the correct molecular formula and type of bond formed between X and Y ?

A
$X_3 Y$, ionic bond
B
$X_2 Y_3$, coordinate bond
C
$\mathrm{XY}_3$, covalent bond
D
$\mathrm{X}_2 \mathrm{Y}$, covalent bond
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0
The change in hybridization (if any) of the 'Al' atom in the following reaction is $\mathrm{AlCl}_3+\mathrm{Cl}^{-} \rightarrow \mathrm{AlCl}_4^{-}$
A
No change in the hybridization state
B
$s p^2$ to $s p^3$
C
$s p^3$ to $s p^3 d$
D
$\mathrm{sp}^3$ to $\mathrm{sp}^2$
4
KCET 2024
MCQ (Single Correct Answer)
+1
-0

A pair of isoelectronic species having bond order of one is

A
$\mathrm{N}_2, \mathrm{CO}$
B
$\mathrm{N}_2, \mathrm{NO}^{+}$
C
$\mathrm{O}_2^{2-}, \mathrm{F}_2$
D
$\mathrm{CO}, \mathrm{NO}^{+}$
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