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 46 of 49
- A. sp3
- B. sp
- C. sp2
- D. dsp
Explanation: The carbon atoms in alkanes are sp3 hybridized, and have tetrahedral shapes, with the bonded atoms at angles of 109.5° to each other.
Correct answer: sp3- A. sp2
- B. sp3
- C. sp
- D. All of these
Explanation: Option: A In benzene, the carbon atom is joined to two other similar carbon atoms instead of just one.
Correct answer: sp2- A. Sp3
- B. Sp2
- C. Sp
- D. Sp2d
Explanation: Ethyne molecule is sp hybridized since it has one sigma and two carbon-carbon pi bonds. Hence, option C is correct.
Correct answer: Sp- A. Acetone
- B. Acetonitrile
- C. Acetic acid
- D. Acetamide
Explanation: Acetonitrile has a nitrile group (-CN), where the carbon is sp hybridized. The nitrogen is also sp hybridized.
Correct answer: Acetonitrile- A. 1
- B. 2
- C. 3
- D. 4
Explanation: In the ethyne molecule (C2H2), each carbon atom is sp hybridized to form a triple bond between them.
Correct answer: 4- A. sp2
- B. sp3
- C. sp
- D. None of these
Explanation: The sp2 hybridization is the mixing of one s and two p atomic orbitals, which involves the promotion of one electron in the s orbital to…
Correct answer: sp2- A. 109.5˚
- B. 180˚
- C. 90˚
- D. 120˚
Explanation: In sp2 hybridization, the orbital orientation is: 120 degrees. During sp2 hybridization, one s orbital and two p orbitals in the valence…
Correct answer: 120˚- A. 1
- B. 2
- C. 3
- D. 4
Explanation: In the formation of ethyne molecule, both the carbon atoms undergo sp-hybridization having two unhybridized orbital i.e., 2py and 2px.
Correct answer: 2- A. Acetone
- B. Acetonitrile
- C. Acetic acid
- D. Acetamide
Explanation: The structural formula of molecules is shown. Only acetonitrile is the one that does not have sp2 hybridization while others do contain…
Correct answer: Acetonitrile- A. It forms after a sigma bond
- B. It is formed by parallel overlapping of orbitals
- C. P orbital may form a pi bond
- D. Hybrid orbital forms a pi bond
Explanation: The explanation for this question will be added soon.
Correct answer: Hybrid orbital forms a pi bond911. Which of the following compounds possesses only a single covalent bond between carbon and hydrogen?
- A. CH4
- B. C2H2
- C. C2H4
- D. All of the above
Explanation: All of the above possess a single covalent bond between carbon and hydrogen. Hence, option D is right option
Correct answer: All of the above- A. Pi bond between hybridized orbitals
- B. Sigma bond between hybridized orbitals
- C. Pi bond between unhybridized orbitals
- D. Sigma bond between unhybridized orbitals
Explanation: Option A: Pi bond between hybridized orbitals: In molecular orbital theory, hybridized orbitals can overlap to form sigma bonds.
Correct answer: Pi bond between unhybridized orbitals- A. One sigma and one pi bond
- B. 2 sigma bonds
- C. 2 pi bonds
- D. Half pi and half sigma bond
Explanation: OPTION A: A double bond consists of one sigma bond and one pi bond. A sigma bond is a strong covalent bond formed by the overlap of two…
Correct answer: One sigma and one pi bond- A. 3
- B. 2
- C. 1
- D. 0
Explanation: One C=C will have "one" pi bond in it as a double covalent bond consisting of one pi bond and one sigma bond.
Correct answer: 1- A. 10
- B. 13
- C. 11
- D. 12
Explanation: Nitrogen has configuration 1s2 2s2 2p3. ( 5 valence electrons) Oxygen has configuration 1s2 2s2 2p4.
Correct answer: 11- A. Hexagonal
- B. Square planar
- C. Trigonal bipyramidal
- D. Tetrahedral
Explanation: d) Tetrahedral:The tetrahedral shape refers to a molecule with a central atom surrounded by four ligands, arranged at the corners of a…
Correct answer: Tetrahedral- A. SnCl4
- B. NF3
- C. SO3
- D. H2O
Explanation: The molecule has a trigonal pyramidal structure, like ammonia. The bond angle is reduced from 107° in ammonia to 101.9° in NF3, because…
Correct answer: NF3- A. C - F
- B. C - Cl
- C. C - I
- D. C - Br
Explanation: C-I bond is the longest bond of all the options as atomic radius increases down the group, iodine is furthest down hence minimum bond…
Correct answer: C - I- A. When both attractive and repulsive forces are balanced
- B. When attractive forces overcome repulsive forces
- C. When repulsive forces are negligible
- D. When repulsive forces exceed attractive forces
Explanation: Explanation:Bond is formed when either the attraction and repulsion are equal or the force of attraction is greater than repulsion.
Correct answer: When repulsive forces exceed attractive forces920. _ has dipole moment.
- A. CO
- B. CO2
- C. Benzene
- D. All of these
Explanation: In the free carbon monoxide molecule, a net negative charge δ- remains at the carbon end and the molecule has a small dipole moment of…
Correct answer: CO