1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Among the following, the species having same bond order are

A

$\mathrm{NO}^{+}$and $\mathrm{CN}^{-}$

B

CO and $\mathrm{O}_2^{-}$

C

$\mathrm{O}_2^{-}$and NO

D

$\mathrm{CN}^{-}$and $\mathrm{O}_2$

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Arrange the energy of $2 s$ orbitals in increasing order for the atoms $\mathrm{C}, \mathrm{B}, \mathrm{N}$ and O .

A

$E_{2 s}(\mathrm{O}) < E_{2 s}(\mathrm{~N}) < E_{2 s}(\mathrm{C}) < E_{2 s}(\mathrm{~B})$

B

$E_{2 s}(\mathrm{~B}) < E_{2 s}(\mathrm{C}) < E_{2 s}(\mathrm{~N}) < E_{2 s}(\mathrm{O})$

C

$E_{2 s}(\mathrm{~N})< E_{2 s}(\mathrm{O})< E_{2 s}(\mathrm{~B})< E_{2 s}(\mathrm{C})$

D

$E_{2 s}(\mathrm{C})< E_{2 s}(\mathrm{~B})< E_{2 s}(\mathrm{O})< E_{2 s}(\mathrm{~N})$

3
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Identify the final product $C$ in the following sequence.

$$ \begin{aligned} \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}+(\text { alc. } \mathrm{KOH}) & \xrightarrow{h \nu} A+\mathrm{Br}_2 \longrightarrow B+(\text { alc. } \mathrm{KCN}) \longrightarrow C \end{aligned} $$

A

$\mathrm{CH}_2=\mathrm{CHCN}$

B

$\mathrm{CH}_3 \mathrm{CHBrCN}$

C

$\mathrm{CHBr}=\mathrm{CHCN}$

D

$\mathrm{CH}_2 \mathrm{BrCH}_2 \mathrm{CN}$

4
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The osmotic pressure of a solution prepared by dissolving 48 mg of $\mathrm{MgCl}_2$ in 500 mL water at $25^{\circ} \mathrm{C}$ is (Assuming complete dissociation).

(Molar mass of $\mathrm{MgCl}_2=95 \mathrm{~g} / \mathrm{mol}, R=0.0821 \mathrm{L} \cdot \mathrm{atm} / \mathrm{mol} \cdot \mathrm{K}$ )

A

$2.49 \times 10^{-2} \mathrm{~atm}$

B

$4.98 \times 10^{-2} \mathrm{~atm}$

C

$2.49 \times 10^{-3} \mathrm{~atm}$

D

$4.98 \times 10^{-3} \mathrm{~atm}$

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