Free Chemical Bonding MCQs with Answers
964 Chemical Bonding MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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Read the Chemical Bonding notesFree MDCAT chapter notes with key terms964 questions · page 14 of 49
- A. Medium
- B. High
- C. Low
- D. Very high
Explanation: The electron pairs of multiple bonds contain a high electronic charge density.
Correct answer: High262. In sp2 hybridization, one s and two 'p' atomic orbitals of an atom intermix three orbitals called:
- A. Sp3 hybrid orbitals
- B. Sp3-s hybrid orbitals
- C. Sp hybrid orbitals
- D. Sp2 hybrid orbitals
Explanation: When one s and two p atomic orbitals are intermixed, the hybridization formed is called sp2 hybridization.
Correct answer: Sp2 hybrid orbitals- A. Non-directional
- B. Isomerism
- C. Non-rigid
- D. Fast reaction
Explanation: Covalent compounds, especially organic covalent compounds, display various types of isomersims.
Correct answer: Isomerism- A. H2S
- B. H2O
- C. SnCl2
- D. PH3
Explanation: SnCl2 does not belong to the AB4 group while the rest of the molecules belong to the AB4 group.H2O and H2S are AB 4 type molecules with…
Correct answer: SnCl2- A. Bond energy
- B. Kinetic energy
- C. Electron affinity
- D. Ionisation energy
Explanation: Bond energy is defined as the amount of energy required to break one mole of the existing bonds in a chemical species.
Correct answer: Bond energy- A. Both electron and x-ray diffraction
- B. None of these
- C. X-ray diffraction
- D. Electron diffraction
Explanation: Bond lengths are experimentally determined by physical techniques that are both electron and x-ray diffractions.
Correct answer: Both electron and x-ray diffraction- A. Remains the same
- B. Changes irregularly
- C. Decreases
- D. Increases
Explanation: Bond length depends upon the strength of a bond. The stronger the bond is, the greater the force of attraction will be resulting in a…
Correct answer: Increases- A. 3
- B. 2
- C. 4
- D. 5
Explanation: The p orbital has three orbitals px, py, and pz. All these three orbitals have similar energy belonging to the same orbital (p), hence are…
Correct answer: 3- A. 107.5⁰
- B. 102⁰
- C. 12⁰
- D. 19.5⁰
Explanation: The value of bond angle in NF3 molecule is 102⁰. The presence of highly electronegative atoms such as F reduces the bond angle.
Correct answer: 102⁰- A. 4
- B. 1
- C. 3
- D. 2
Explanation: Fluorine is the most electronegative element in the Periodic Table and is assigned an arbitrary value of 4.0 on the Pauling Scale.
Correct answer: 4- A. None of these
- B. Valence bond theory
- C. Band theory
- D. Electron pool theory
Explanation: According to the molecular orbital theory, the atomic orbitals combine to form molecular orbitals which are spread throughout the metal…
Correct answer: Band theory- A. Free from all internal influences
- B. Free from all external influences
- C. Bound to all external influences
- D. Bound to all internal influences
Explanation: In the gaseous state, the atoms and ions are present far from other atoms and ions, and therefore are sufficiently distant from each…
Correct answer: Free from all external influences- A. Relative types of atoms
- B. Relative amount of atoms
- C. The relative color of atoms
- D. Relative sizes of atoms
Explanation: The chemical properties of atoms are linked to their sizes. This parameter determines properties like bond length, bond energy etc.
Correct answer: Relative sizes of atoms- A. Three bond pairs, two lone pairs
- B. Three bond pairs, one lone pair
- C. Three bond pairs only
- D. Two bond pairs, one lone pair
Explanation: According to VSEPR, the structure of ammonia involves three bond pairs and one lone pair.
Correct answer: Three bond pairs, one lone pair- A. 2-methyl-3-hexene
- B. 2,3-hexadiene
- C. 2,3,4-hexatriene
- D. 3-hexyne
Explanation: Out of the given options, only 2,3-hexadiene has two double bonds between C2 and C3 and between C3 and C4. It has the structure:
Correct answer: 2,3-hexadiene- A. AlO
- B. Al2O
- C. Al2O3
- D. Al3O2
Explanation: Al2O3is the only formula that satisfies both; the stated ratio of 2:3 and the valencies of elements involved (Oxygen: -2, Aluminium: +3).
Correct answer: Al2O3- A. Moles
- B. Molecules
- C. Atoms
- D. All of these
Explanation: The greater the number of atoms in a given molecule, the greater the electron cloud and, hence the greater the strength of London…
Correct answer: Atoms- A. Opposite
- B. Adjacent
- C. Parallel
- D. Equal
Explanation: Atomic radius is approximately half the distance between centers of two adjacent atoms.
Correct answer: Adjacent- A. C2H6
- B. CH3Br
- C. CH3OCH3
- D. C2H5OH
Explanation: General solubility rule is 'like dissolves like'.So water can only be soluble in those compounds which show hydrogen .Ethanol (C2H5OH) has…
Correct answer: C2H5OH- A. Number of shells
- B. Nuclear charge
- C. Shielding effect
- D. Bond length
Explanation: Option A: The number of shells or energy levels generally remains the same within a period, as the elements in a period have the same…
Correct answer: Nuclear charge