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 20 of 49
- A. sp3
- B. sp2
- C. sp
- D. dsp2
Explanation: In a diamond, the carbon atoms are arranged tetrahedrally. Each carbon atom is sp3 hybridised and attached to four other carbon atoms…
Correct answer: sp3- A. H2O
- B. H2S
- C. H2Se
- D. H2Te
Explanation: The strongest intermolecular force is hydrogen bonding, which is a particular subset of dipole-dipole interactions .It occurs when a…
Correct answer: H2O- A. Covalent solids
- B. Molecular solids
- C. Ionic solids
- D. Metallic solids
Explanation: Covalent solids are those solids in which constituents particles are atoms that are interlinked through the covalent bonds.
Correct answer: Covalent solids- A. Fast reactions
- B. Non-directional nature
- C. Non-rigid structures
- D. lsomerism
Explanation: Covalent bonds are directional in nature. Therefore, they exhibit the phenomenon of isomerism.
Correct answer: lsomerism- A. Formed by axial overlapping of atomic orbitals, and is stronger than sigma bond.
- B. Formed by parallel overlapping of atomic orbitals, and is stronger than sigma bond.
- C. Formed by axial overlapping of atomic orbitals, and is weaker than sigma bond.
- D. Formed by parallel overlapping of atomic orbitals, and is weaker than sigma bond.
Explanation: Pi (π) bonds are formed by the parallel overlap of atomic orbitals that have electron density above and below the bond axis.
Correct answer: Formed by parallel overlapping of atomic orbitals, and is weaker than sigma bond.- A. Oils
- B. Polypeptide
- C. Monopeptide
- D. Protein
Explanation: The primary structure of proteins is made up of long-chain amino acids known as the polypeptide chain.
Correct answer: Polypeptide- A. Increases increases
- B. Decreases decreases
- C. Increases decreases
- D. Decrease increase
Explanation: Molecular orbital configuration of N2 is 1s2 2s2 2p3 Molecular orbital configuration of O2 is 1s2 2s2 2p4.
Correct answer: Decrease increase- A. F→ F
- B. Cl→ Cl
- C. O→ O
- D. H→H
Explanation: The amount of energy released when an electron is added to an atom is termed as electron affinity.
Correct answer: H→H- A. Intramolecular hydrogen bonds
- B. Disulphide bonds
- C. A rippled effect
- D. Intermolecular hydrogen bonds
Explanation: Option A is correct because alpha helices are stabilized by intramolecular hydrogen bonds between the carbonyl oxygen of one amino acid…
Correct answer: Intramolecular hydrogen bonds- A. Intermolecular hydrogen bonds
- B. Disulfide bonds
- C. A rippled effect
- D. Hydrophobic Interactions
Explanation: A. a-helix and beta pleated sheets have hydrogen bonding so Option A is correct.B.
Correct answer: Intermolecular hydrogen bonds- A. Li
- B. H
- C. Be
- D. He
Explanation: Ionization energy is directly related to the stability of electronic configuration. helium has highest value in the table
Correct answer: He- A. ns1
- B. ns2
- C. ns2,np5
- D. ns2,np6
Explanation: Ionization energy is directly related to the stability of electronic configuration.
Correct answer: ns2,np6- A. High I. E of metal
- B. Low lattice energy
- C. Low E.A of nonmetal
- D. Low I.E of metal
Explanation: Ionic bonds are formed between atoms when one atom donates electrons (forming a positively charged cation) and another atom accepts those…
Correct answer: Low I.E of metal- A. 25% and 33%
- B. 33% cach
- C. 33% and 25%
- D. 25% cach
Explanation: BF4- and NH4+ both have 3 covalent bonds and 1 co-ordinate covalent bond in their structure.
Correct answer: 25% cach- A. Acceptor
- B. Donor
- C. Neutral
- D. Negatively charged
Explanation: Option B is correct.A donor species is a substance that can donate electrons to another substance.
Correct answer: Donor- A. Released
- B. Absorbed
- C. Remain same
- D. Constant
Explanation: When oppositely charged ions are brought closer, ionic bonds form and bond forming releases energy.
Correct answer: Released- A. C2H4
- B. H2S
- C. CO2
- D. NCI3
Explanation: In the nitrogen trichloride molecule (NCl3), there are three single bonds between the nitrogen and chlorine atoms.
Correct answer: NCI3- A. H-bonding
- B. Covalent bond
- C. Coordinate covalent bond
- D. Electrovalent bond
Explanation: A coordinate covalent bond, also known as a dative bond or a Lewis acid-base bond, is formed when one atom (the donor) provides both…
Correct answer: Coordinate covalent bond- A. NH3
- B. NH4Cl
- C. CH4
- D. CO
Explanation: CH4 has four covalent bonds which is most out of all given options.
Correct answer: CH4- 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.