1
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{H}$$-bonding is maximum in

A
ethanol
B
methoxy methane
C
chloro ethane
D
N, N-diethyl amino ethane
2
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

The stability of dihalides of $$\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}$$ and decreases gradually in the sequence.

A
$$\mathrm{GeX}_2>\mathrm{SiX}_2>\mathrm{SnX}_2>\mathrm{PbX}_2$$
B
$$\mathrm{PbX}_2>\mathrm{SnX}_2>\mathrm{GeX}_2>\mathrm{Six}_2$$
C
$$\mathrm{Six}_2>\mathrm{GeX}_2>\mathrm{PbX}_2>\mathrm{SnX}_2$$
D
$$\mathrm{PbX}_2>\mathrm{GeX}_2>\mathrm{SnX}_2>\mathrm{SiX}_2$$
3
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

The structure of $$\mathrm{XeOF}_4$$ is

A
square pyramidal
B
pentagonal bipyramidal
C
octahedron
D
square planar
4
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{PH}_3$$ has much lower boiling point than $$\mathrm{NH}_3$$ because :

A
$$\mathrm{PH}_3$$ contains covalent bonds whereas $$\mathrm{NH}_3$$ contains ionic bonds.
B
$$\mathrm{NH}_3$$ forms hydrogen bond
C
$$\mathrm{PH}_3$$ has smaller molecular weight
D
$$\mathrm{NH}_3$$ undergoes umbrella inversion
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