MCQs on Molecular Structure and Chemical Bonding for NEET

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Introduction

No other elements occur independently except for noble gases. The attractive force by which ions, molecules, and atoms are held together is referred to as a chemical bond. The atom tends to gain stability with its octet completion. Besides, by an ionic bond, the oppositely charged ions are held together. Electron pairs are shared in a covalent bond. Molecules in a crystalline structure are held together by the weak Van der Waal’s interaction.

In the periodic table, the highly electropositive alkali metals and the highly electronegative halogens are separated by the noble gases.

The negative ion formation from a halogen atom and formation of a positive ion from an alkali metal atom is associated with the loss and gain of an electron by the respective atoms.

The chemical bonding and molecular structure MCQs can help students get a clear understanding of the concept. Let us look at the chemical bonding questions for NEET. A few of the chemical bonding NEET questions are given below.


1. Which is the Following has the Least Polarity in Bond?

  1. H - Cl

  2. H - S

  3. H - F

  4. H - O

Answer: (b)

Explanation

S is the least electronegative, and thus, H - S has the least priority.


2. Which of the Following should be More Stable?

  1. H2+

  2. H+

  3. H-

  4. H

Answer: (c)

Explanation

H- is the most stable one, because it has the noble gas (He) configuration.


3. The Number of Atoms Shared in Each Outermost Shell of N2 is ___?

  1. 5

  2. 4

  3. 3

  4. 2

Answer: (c)

Explanation

Each N atom in the N2 molecule forms a triple bond. Hence it shares three electrons.


4. Which of the Following will not Show the Resonance?

  1. H2O2

  2. Ozone

  3. Oxygen

  4. Allene

Answer: (a)

Explanation

For the resonance structure possible if multiple bonds are present. In H2O2, there are no multiple bonds.


5. The Shape of Gaseous SnCl2 is Given by ___?

  1. Angular

  2. Linear

  3. Tetra Hedral

  4. T-Shaped

Answer: (a)

Explanation

Sn in SnCl2 has an Sp2 hybridized and has the angular shape.


6. The Dipole-Induced Dipole Interactions are Present in Which of the Pairs Given Below?

  1. H2O and alcohol

  2. Cl2 and CCl4

  3. HCl and He atoms

  4. SiF4 and He atoms

Answer: (c)


7. Which of the Following Ones is Paramagnetic?

  1. CO

  2. CN

  3. NO+

  4. O2

Answer: (d)


8. Which of the Following Ones is a Polar Molecule?

  1. XeF4

  2. SiF4

  3. SF4

  4. BF3

Answer: (c)


9. The Outer orbitals of ‘C’ in an Ethene Molecule can be Considered to be Hybridized to Form three Equivalent sp2 Orbitals. The Total Number of Sigma (σ) and pi (π) Bonds in an Ethene Molecule is ___?

  1. 3 sigma (σ) and 2 pi (π) bonds

  2. 1 sigma (σ) and 2 pi (π) bonds

  3. 5 sigma (σ) and 1 pi (π) bonds

  4. 4 sigma (σ) and 1 pi (π) bonds

Answer: (c)


10. Identify the Incorrect Statement with Regards to the XeO4 Molecule?

  1. XeO4 molecule is square planar

  2. XeO4 molecule is tetrahedral

  3. There are four sp3 – p, s bonds

  4. There are four pπ– dσ bonds

Answer: (a)


11. One of the Given Ionization Processes, Which of the Following Bond Energy Increases and the Magnetic Behaviour Changes from Paramagnetic to Diamagnetic?

  1. O2 → O2+

  2. NO → NO+

  3. N2 → N2+

  4. C2 → C2+

Answer: (b)


12. The Molecule that has the Smallest Bond Angle is ___?

  1. NCl3

  2. SbCl3

  3. PCl3

  4. AsCl3

Answer: (b)


13. Find the Paramagnetic Compound among the Following?

  1. Na2O2

  2. O3

  3. N2O

  4. KO2

Answer: (d)


14. The p-character Percentage in the Orbitals Forming P−P Bonds in P4 is Given by ___?

  1. 25

  2. 33

  3. 50

  4. 75

Answer: (d)


15. Molecules are held Together in a Crystal by ___?

(a) Hydrogen bond

(b) Electrostatic attraction

(c) Van der Waal’s attraction

(d) Dipole-dipole attraction

Answer: (c)


16. C-O Bond Length is Minimum in___

(a) CO2

(b) CO32-

(c) HCOO

(d) CO

Answer: (d)


17. Find the Molecule with the Maximum Dipole Moment.

(a) CH4

(b) NH3

(c) CO2

(d) NF3

Answer: (b)


18. Sp3d2 Hybridization is Present in [Co(NH3)63+], Find its Geometry.

(a) Octahedral geometry

(b) Square planar geometry

(c) Tetragonal geometry

(d) Tetrahedral geometry

Answer: (a)


19. MX6 is a Molecule with Octahedral Geometry. How Many X – M – X Bonds are There at 180°?

(a) Four

(b) Two

(c) Three

(d) Six

Answer: (c)


20. The Formal Charge and P-O Bond Order in PO43- Respectively are ____?

(a) 0.6, -0.75

(b) 1.25, -0.75

(c) 1.0, -0.75

(d) 1.25, -3

Answer: (b)


21. Find the Pair with sp2 Hybridization of the Central Molecule.

(a) NH3 and NO2

(b) BF3 and NH2

(c) BF3 and NO2

(d) NH2 and H2O

Answer: (c)


22. pℼ – dℼ Bonding is Present in Which Molecule?

(a) SO32-

(b) CO32-

(c) NO3

(d) BO33-

Answer: (a)



23. Which of the Molecules have a Permanent Dipole Moment?

(a) SO3

(b) SO2

(c) H2S

(d) CS2

Answer: (b)


24. In Acetylene Molecule between the Carbon Atoms, There are ___?

  1. Three sigma bonds

  2. Two sigma bonds and one pi bonds

  3. One sigma bonds and two pi bonds

  4. Three pi bonds

Answer: (c)

FAQ (Frequently Asked Questions)

1. Which One has a Pyramidal Shape?

    (a) SO3

    (b) PCl3

    (c) CO32-

     (d) NO3

Answer: (b)

2. Sodium Chloride is an Ionic Compound whereas Hydrogen Chloride is Covalent Mainly because _____?

  1. Sodium is less reactive

  2. Hydrogen is nonmetal

  3. Hydrogen chloride is a gas

  4. Electronegativity difference in the case of Chloride and Hydrogen is less than 2.1

Answer: (b)

3. NiCl2{P(C2H5)2(C6H5)}2 Exhibits Temperature-Dependent Magnetic behaviour (diamagnetic/paramagnetic). Coordination Geometries of Ni2+ in Both Diamagnetic and Paramagnetic States are Respectively ____?

  1. Tetrahedral and tetrahedral

  2. Square planar and square planar

  3. Tetrahedral and square planar

  4. Square planar and tetrahedral

Answer: (c)

4. Assuming Hund's rule is Violated, the Bond Order and Magnetic Nature of the Diatomic Molecule B2 is ____?

  1. 1 and diamagnetic

  2. 1 and paramagnetic

  3. 0 and paramagnetic

  4. 0 and diamagnetic

Answer: (a)

5. Which one of the Following Pairs of Species have the Same Bond Order?

  1. CN and NO+

  2. O2 and CN

  3. CN and CN+

  4. NO+ and CN+

Answer: (a)