Recommended PYQs (STRICTLY NCERT Based) Chemical Bonding and Molecular Structure Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Intramolecular hydrogen bonding is present in:

1.		2.
3.	HF	4.

Subtopic: van der Waal Force & Hydrogen Bonding |

75%

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Q2:

Match List I with List II.

	List I (Compound)		List II (Shape/geometry)
A.	NH₃	I.	Trigonal Pyramidal
B.	BrF₅	II.	Square planar
C.	XeF₄	III.	Octahedral
D.	SF₆	IV.	Square Pyramidal

Choose the correct answer from the option given below:

1. A-II, B-IV, C-III, D-I
2. A-III, B-IV, C-I, D-II
3. A-II, B-III, C-IV, D-I
4. A-I, B-IV, C-II, D-III

Subtopic: V.S.E.P.R & V.B.T |

83%

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NEET - 2024

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Q3:

Which one of the following statements is correct?

1.	BF₃ has non-zero dipole moment.
2.	The dipole moment of NF₃ is greater than that of NH₃.
3.	Three canonical forms can be drawn for $\text{CO}_3^{2-}$ ion.
4.	Three resonance structures can be drawn for ozone.

Subtopic: Polarity | Resonance & Nature of Compounds |

61%

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Q4:

Which one of the following molecules is paramagnetic?

1.

H_{2}

$\mathrm{H}_2$
2.

{L i}_{2}

$\mathrm{Li}_2$
3.

C_{2}

$\mathrm{C_2}$
4.

O_{2}

$\mathrm{O}_2$

Subtopic: M.O.T |

86%

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Q5:

Arrange the following hydrides in the order of decreasing bond angle:
A.

{S b H}_{3}

$\mathrm{SbH}_3$
B.

{A s H}_{3}

$\mathrm{AsH}_3$
C.

{P H}_{3}

$\mathrm{PH}_3$
D.

{N H}_{3}

$\mathrm{NH}_3$
Choose the correct answer from the options given below:

1.	B > A > D > C	2.	B > A > C > D
3.	D > C > B > A	4.	A > C > B > D

Subtopic: V.S.E.P.R & V.B.T |

82%

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Q6:

The correct shape and hybridisation of

{BrF}_{5}

$\text{BrF}_5$ is:

1. Square pyramidal and

{sp}^{3} d^{2}

$\text{sp}^3\text{d}^2$
2. Square pyramidal and

d^{2} {sp}^{3}

$\text{d}^2\text{sp}^3$
3. Trigonal bipyramidal and

{sp}^{3} d^{2}

$\text{sp}^3\text{d}^2$
4. Trigonal bipyramidal and

d^{2} {sp}^{3}

$\text{d}^2\text{sp}^3$

Subtopic: V.S.E.P.R & V.B.T |

75%

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Q7:

Which pair of the following compounds has one lone pair of electrons on the central atom?

1.

{S F}_{4}, {B r F}_{5}

$\mathrm{SF}_4, \mathrm{BrF}_5$
2.

{S F}_{4}, {C l F}_{3}

$\mathrm{SF}_4, \mathrm{ClF}_3$
3.

{C l F}_{3}, {X e F}_{4}

$\mathrm{ClF}_3, \mathrm{XeF}_4$
4.

{X e F}_{4}, {B r F}_{5}

$\mathrm{XeF}_4, \mathrm{BrF}_5$

Subtopic: V.S.E.P.R & V.B.T |

85%

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Q8:

Which of the following molecules has "NON ZERO" dipole moment value?

1.	$\mathrm{CCl_4}$	2.	$\mathrm{HI}$
3.	$\mathrm{CO_2}$	4.	$\mathrm{BF}_3$

Subtopic: Polarity |

79%

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Q9:

Match Column I (Molecule) with Column II (Bond enthalpy) and mark the correct option:

	Column-I (Molecule)		Column-II (Bond enthalpy) $\left(k J \mathrm{~mol}^{-1}\right)$
A.	HCl	I.	435.8
B.	$\mathrm{N_2}$	II.	498
C.	$\mathrm{H_2}$	III.	946.0
D.	$\mathrm{O_2}$	IV.	431.0

1. A-III, B-IV, C-I, D-II
2. A-IV, B-I, C-III, D-II
3. A-IV, B-III, C-II, D-I
4. A-IV, B-III, C-I, D-II

Subtopic: Types of Chemical Bond |

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Q10:

The correct order of energies of molecular orbitals of N₂ molecule is:

1.	$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<$ $\sigma^* 2 s<\left(\pi 2 p_x=\pi 2 p_y\right)<$ $\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma 2 p_z<\sigma^* 2 p_z$
2.	$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<$ $\left(\pi 2 p_x=\pi 2 p_y\right)<$ $\sigma 2 p_z<\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z$
3.	$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z<$ $\left(\pi 2 p_x=\pi 2 p_y\right)<$ $\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z$
4.	$\sigma \text { 1s }<\sigma^* \text { 1s }$ $<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z<$ $\sigma^* 2 p_z<\left(\pi 2 p_x=\pi 2 p_y\right)<$ $\left(\pi^* 2 p_x=\pi^* 2 p_y\right)$

Subtopic: M.O.T |

72%

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