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 25 of 49
- A. A
- B. B
- C. C
- D. D
Explanation: The sulfate ion (SO4-2) has a tetrahedral geometry. It consists of four oxygen atoms bonded to the central sulfur atom, forming a…
Correct answer: C- A. Covalent bonding
- B. Hydrogen bonding
- C. Instantaneous dipole - induced dipole forces
- D. Dipole - Dipole forces
Explanation: The intermolecular forces in liquid CCl4 (carbon tetrachloride) are primarily due to London dispersion forces, also known as van der Waals…
Correct answer: Instantaneous dipole - induced dipole forces- A. A
- B. B
- C. C
- D. D
Explanation: C2H2(acetylene) has a triple bond between the two carbon atoms, consisting of one sigma (σ) bond and two pi (π) bonds.
Correct answer: C- A. Metallic solids
- B. Covalent solids
- C. Ionic solids
- D. Molecular solids
Explanation: covalent solids,especially those with a a network structure like diamond, are held together by strong covalent bonds between atoms.
Correct answer: Covalent solids- A. Electronegative difference
- B. Bond order
- C. s-character
- D. Number of lone pair
Explanation: Lone pairs are non-bonding electron pairs present on an atom. They can exert repulsive forces on the electrons involved in neighboring…
Correct answer: Number of lone pair- A. H-H
- B. N-N
- C. O-O
- D. F-F
Explanation: Option b) N-N (Nitrogen-Nitrogen) should have the greatest bond energy due to the presence of a triple bond, which is stronger than single…
Correct answer: N-N- A. SO2
- B. CCI4
- C. SO3
- D. H2O
Explanation: Sulfur trioxide has a trigonal planar molecular geometry. It consists of three oxygen atoms bonded to a central sulfur atom, with no lone…
Correct answer: SO3- A. B3N3H6
- B. H2O2
- C. NH4-
- D. Al2O6
Explanation: Option Ais correct.The molecule that has the maximum number of dative bonds is B3N3H6.A dative bond is a type of chemical bond that is…
Correct answer: B3N3H6- A. Ethanol
- B. Ethanoic acid
- C. Aminoethane
- D. Propanone
Explanation: Option D is correct.Propanone does not have hydrogen bonding. Hydrogen bonding is a type of intermolecular force that occurs between a…
Correct answer: Propanone- A. CH3CHO
- B. CH3NH2
- C. CH3HO
- D. NH3
Explanation: Option A is correct.CH3CHO (acetone) will not form hydrogen bonds with another molecule of itself.
Correct answer: CH3CHO- A. Covalent bonding
- B. Ionic bonding
- C. Hydrogen bonding
- D. London dispersion forces
Explanation: Option D is correct.The main intermolecular bonding forces in CO2(s) are London dispersion forces.
Correct answer: London dispersion forces- A. Electron gas theory
- B. Valance bond theory
- C. Band theory
- D. Crystal field theory
Explanation: Option A is correct. Electron gas theory was put forward by Drude and extended by Loren (1923) to explain the properties of metallic…
Correct answer: Electron gas theory- A. The shape of molecules depend upon bonded electrons pairs
- B. Pair of electrons attract each other in valence shell
- C. Pair of electrons tend to occupy such positions that minimize repulsion
- D. All of these
Explanation: Option D is correct.The VSEPR theory is a model that describes the shape of molecules based on the repulsion between electron pairs.
Correct answer: All of these- A. Co-ordinate bond
- B. Ionic bond
- C. Covalent bond
- D. Metallic bond
Explanation: Option B is correct.The type of bond that needs to be broken for magnesium oxide to melt is an ionic bond.
Correct answer: Ionic bond- A. Sigma bonds are stronger than pi bonds
- B. Pi bonds are weaker than sigma bonds
- C. in a carbon-carbon double bond, there is one sigma bond and one pi bond.
- D. All are correct.
Explanation: Option D is correct.Sigma bonds are stronger than pi bonds because the head-on overlap of orbitals results in a greater degree of overlap.
Correct answer: All are correct.- A. The difference in electronegativity between the two atoms is less than 0.4.
- B. The electrons are shared equally between the two atoms.
- C. They have lower melting and boiling points than polar covalent bonds.
- D. Water and ammonia are non polar covalent compounds.
Explanation: Water (H2O) and ammonia (NH3) are both polar covalent compounds. This is because the electronegativity of oxygen (3.44) and hydrogen (2.2)…
Correct answer: Water and ammonia are non polar covalent compounds.- A. Electronegativity
- B. Size of the atoms
- C. Bond order
- D. All can affect.
Explanation: Option D is correct.The greater the difference in electronegativity between the two atoms, the shorter the bond length.
Correct answer: All can affect.- A. ionic bond
- B. Covalent bond
- C. coordinate covalent bond
- D. Metallic bond
Explanation: Option C is correct. A coordinate covalent bond is also known as a dative bond.
Correct answer: coordinate covalent bond- A. Ionic bonds are formed between atoms of elements with very different electronegativities while Covalent bonds are formed between atoms of elements with similar electronegativities
- B. Covalent compounds have low melting and boiling points and Ionic compounds have high melting and boiling points.
- C. Ionic bond is directional while covalent bond is non directional.
- D. Covalent compounds are poor conductors of electricity while Ionic compounds are good conductors of electricity
Explanation: Ionic bonds are formed between atoms of different elements with very different electronegativities.
Correct answer: Ionic bond is directional while covalent bond is non directional.- A. When cations and anions approach each other, polarizability increases only
- B. Sharing of electrons takes place to some extent only
- C. Highest ionic character is present in CsF only
- D. All of these
Explanation: Option D is correct.When cations and anions approach each other, polarizability increases only.
Correct answer: All of these