1
JEE Main 2024 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals

A. have the same energy

B. have the minimum overlap

C. have same symmetry about the molecular axis

D. have different symmetry about the molecular axis

Choose the most appropriate from the options given below:

A
B, C, D only
B
A, B, C only
C
B and D only
D
A and C only
2
JEE Main 2024 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement - I: Since Fluorine is more electronegative than nitrogen, the net dipole moment of $$\mathrm{NF}_3$$ is greater than $$\mathrm{NH}_3$$.

Statement - II: In $$\mathrm{NH}_3$$, the orbital dipole due to lone pair and the dipole moment of $$\mathrm{NH}$$ bonds are in opposite direction, but in $$\mathrm{NF}_3$$ the orbital dipole due to lone pair and dipole moments of N-F bonds are in same direction.

In the light of the above statements, choose the most appropriate from the options given below:

A
Statement I is true but Statement II is false.
B
Both Statement I and Statement II are true.
C
Both Statement I and Statement II are false.
D
Statement I is false but Statement II is true.
3
JEE Main 2024 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The molecule / ion with square pyramidal shape is

A
$$\mathrm{PCl}_5$$
B
$$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$$
C
$$\mathrm{PF}_5$$
D
$$\mathrm{BrF}_5$$
4
JEE Main 2024 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Aluminium chloride in acidified aqueous solution forms an ion having geometry

A
Square planar
B
Octahedral
C
Trigonal bipyramidal
D
Tetrahedral
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