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 45 of 49
881. In which sequence are the molecules quoted in order of increasing bond angle with in the molecule:
- A. H2O, SF6, BF3
- B. NH3, CH4, H2O
- C. H2O, CO2, BF3
- D. H2O, H2O, BF3
Explanation: Ammonia has trigonal pyramidal shape, methane has tetrahedral geometry while H2O show linear geometry.
Correct answer: NH3, CH4, H2O- A. I A
- B. II A, V A
- C. VA, VII A
- D. V A, VIII A
Explanation: The elements of group IIA and VA show abnormally low values in every period of the periodic table.
Correct answer: II A, V A- A. F, CI
- B. CI, Br
- C. F, Br
- D. Br, I
Explanation: Cl has electron affinity value -349kJ/mol and Br has electron affinity value -324kJ/mol which are the closest among given options.
Correct answer: F, Br- A. It is a metal
- B. It forms positive ions
- C. It may form ionic bond
- D. It belongs to p _ block
Explanation: Elements having low ionization energy usually belong to s-block and high ionization energy to p- block.
Correct answer: It belongs to p _ block- A. Triangular planar
- B. Tetrahedral
- C. Linear
- D. Distorted tetrahedral.
Explanation: SOCl2 has disordered tetrahedral structure .This geometry is attributed to the effects of the lone pair on the central sulfur(IV) center.
Correct answer: Distorted tetrahedral.- A. HC1O3
- B. H2S
- C. H3O+
- D. PbCI4
Explanation: In PbCI4 the central atom Pb has no lone pair of electrons.
Correct answer: PbCI4- A. SO-24
- B. ClO-4
- C. NH+4
- D. XeF4
Explanation: All of the other molecules have tetrahedral shape whereas XeF4 has square planar shape with bond angle 90° or 180° .
Correct answer: XeF4- A. CH4
- B. KCN
- C. H2
- D. KCl
Explanation: Option B is correct.The compound that contains both ionic and covalent bonds is KCN.
Correct answer: KCN- A. It was a crisis for whom he was totally unprepared.
- B. It was a crisis for which he totally was unprepared.
- C. It was a crisis for which he was totally unprepared.
- D. It was crisis for which he was totally unprepared.
Explanation: This option is correct. "Which" is the correct relative pronoun to introduce the clause referring to the crisis.
Correct answer: It was a crisis for which he was totally unprepared.- A. We have a motto: live life to the full.
- B. We have a motto, live life to the full.
- C. We have a motto; live life to the full.
- D. We have a motto live life to the full
Explanation: This sentence correctly uses a colon to introduce a quotation or a statement that explains or illustrates the preceding clause.
Correct answer: We have a motto: live life to the full.- A. HF
- B. HCl
- C. HBr
- D. HI
Explanation: HF has greater bond energy than HCl. The bond energy of HF is 568 kJ/moL, while the bond energy of HCl is 431 kJ/moL.
Correct answer: HF- A. Pressure of mutiple bonds
- B. Nature of hybridization present
- C. Difference in electronegativity between the two bonded atoms
- D. Ionization energies of the two bonded atoms
Explanation: Explanation for this question will be added soon.
Correct answer: Ionization energies of the two bonded atoms- A. CCl4
- B. AlCl3
- C. CO2
- D. HCl
Explanation: HCl is polar covalent compound as the chloride ion is more electronegative than hydrogen ion.
Correct answer: HCl894. The difference in the E.N values of the bonded atoms b/w two atoms is an index to of covalent bond:
- A. Polar nature
- B. Non-polar nature
- C. Strength
- D. Nature
Explanation: The 'electronegativity of an atom' determines how strongly it attracts electrons to itself.
Correct answer: Polar nature- A. Polar
- B. Non-polar
- C. Reactive
- D. Non-reactive
Explanation: Option BHalogen are non polar , discrete diatomic in all phases( gas,liquid,solid).
Correct answer: Non-polar- A. SF4
- B. SiF4
- C. BF3
- D. XeF4
Explanation: SF4 has sp3d hybridization so possesses a seesaw structure and has a permanent dipole moment.
Correct answer: SF4- A. Cube
- B. Pentagon
- C. Hexagon
- D. Tetrahedron
Explanation: The shape of CH4 is tetrahedron and the four Hydrogen atoms lie at the four corners of a tetrahedron.
Correct answer: Tetrahedron- A. Methane
- B. Ethane
- C. Alkyne
- D. None of these options are correct
Explanation: The hybridization of methane molecules occurs by mixing one orbital with three p orbitals.
Correct answer: None of these options are correct- A. Ethane
- B. Ethyne
- C. Ethene
- D. Cyclopropane
Explanation: C2H4 is a planar molecule and each bond angle is about 120 degrees.
Correct answer: Ethene- A. BF3
- B. C2H4
- C. BeCl2
- D. CH4
Explanation: Explanation for this question will be added soon.
Correct answer: CH4