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 44 of 49
- A. CH3CHO
- B. CH3NH2
- C. CH3OH
- D. NH3
Explanation: Option A is correct.CH3CHO (acetone) will not form hydrogen bonds with another molecule of itself.
Correct answer: CH3CHO- A. Electron gas theory
- B. Valence 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 solid.
Correct answer: Electron gas theory- A. An electron
- B. A pair of electrons
- C. Three electrons
- D. Four electrons
Explanation: BF3 (boron trifluoride) is an electron pair acceptor because boron has an incomplete octet in its valence shell.
Correct answer: A pair of electrons- A. Merge
- B. Integrate
- C. Overlap
- D. Separate
Explanation: The correct answer is C) Overlap. According to Valence Bond Theory, the essential condition for chemical bonding is that the orbitals of…
Correct answer: Overlap- A. Decreases
- B. Increases
- C. Remains same
- D. First increases then decreases
Explanation: In a period of the periodic table, the number of inner electron shells remains the same, while the nuclear charge (the number of protons…
Correct answer: Remains same- A. Electron is added to a gaseous atom.
- B. A covalent bond in a molecule is broken.
- C. An electron is removed from a gaseous atom.
- D. A covalent bond is formed between atoms.
Explanation: The correct answer is that electron affinity refers to the energy released when an electron is added to a gaseous atom, resulting in the…
Correct answer: Electron is added to a gaseous atom.- A. Increase.
- B. Remain the same.
- C. Decrease.
- D. First increase, then decrease.
Explanation: Along the period, the number of shells remain same and the attraction of nucleus towards outermost electrons increase with increase in…
Correct answer: Decrease.- A. Ionization energy
- B. Electropositivity
- C. Electronegativity
- D. Electron affinity
Explanation: Ionization energy: The amount of energy required to remove the most loosly bonded electron,valance electron to form a cation.
Correct answer: Ionization energy- A. H2
- B. CI2
- C. N2
- D. All of these
Explanation: Among the molecules H2 (hydrogen gas), Cl2 (chlorine gas), and N2 (nitrogen gas), all of them contain non polar covalent bonds.
Correct answer: All of these- A. Boron
- B. Nitrogen
- C. Carbon
- D. Oxygen
Explanation: Nitrogen having a half-filled 2p orbital will have no electron pairs in the valence shell, so there will be no repulsion.
Correct answer: Nitrogen- A. PH3, NH3
- B. BF3, PCI3
- C. H2S, CO2
- D. So2, CO2
Explanation: NH3 (Ammonia) has a pyramidal shape, with the nitrogen atom in the center and three hydrogen atoms surrounding it.
Correct answer: PH3, NH3872. Which of the following best describes the shape and polarity of the carbon disulphide molecule?
- A. Bent and polar
- B. Pyramidal and polar
- C. Linear and non-polar
- D. Bent and non-polar
Explanation: The carbon disulfide (CS2) molecule has a linear shape and is nonpolar.
Correct answer: Linear and non-polar- A. Polar covalent bond.
- B. Non-polar covalent bond.
- C. Pie bond.
- D. Co-ordinate covalent bond.
Explanation: In 'H-F' bond electronegativity difference is '1.9'. they show polar covalent bond.
Correct answer: Polar covalent bond.- A. Sigma Bond.
- B. Pie-Bond.
- C. Hydrogen Bond.
- D. Metallic Bond.
Explanation: When the two partially filled atomic orbitals overlap in such a way that the probability of finding electron is maximum around the line…
Correct answer: Sigma Bond.- A. Electron is added to gaseous atom.
- B. Covalent bond is of molecule is broken.
- C. Electron is removed from gaseous atom.
- D. Covalent bond is formed between the atoms.
Explanation: The electron affinity of an atom is the energy released when an electron adds to an empty or partially filled orbital of an isolated…
Correct answer: Electron is added to gaseous atom.- A. increase.
- B. remain same.
- C. decrease
- D. first increase, then decrease.
Explanation: Along the period, the number of shells remain same and the attraction of nucleus towards outermost electrons increase with increase in…
Correct answer: decrease- A. Parallel to sp2
- B. In the same plane
- C. Perpendicular to sp2 orbitals
- D. Out of plane
Explanation: In sp2 hybridization, the unhybridized "p" orbital is perpendicular to the plane formed by the three sp2 hybrid orbitals.
Correct answer: Perpendicular to sp2 orbitals- A. PCI5
- B. SF6
- C. NH3
- D. HN=NH
Explanation: NH3 has sp3 hybridization. In ammonia, the central nitrogen (N) atom forms three sigma bonds with three hydrogen atoms.
Correct answer: NH3- A. NH3
- B. NCI3
- C. NF3
- D. NBr3
Explanation: NH3 has a bond angle of approximately 107 degrees. The central nitrogen (N) atom is bonded to three hydrogen (H) atoms, and the lone pair…
Correct answer: NH3- A. NH 4Cl
- B. NaCl
- C. HCl
- D. AlCl3
Explanation: NH4Cl (Ammonium Chloride) is the one that contains all three types of chemical bonds: covalent, ionic, and potential hydrogen bonding.
Correct answer: NH 4Cl