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 8 of 49
- A. Mg+2
- B. Na+1
- C. Al+3
- D. Ca+2
Explanation: Enthalpy change of hydration depends upon charge density Charge density depends on two factors: 1.) Size of metal ion :- smaller the size…
Correct answer: Al+3- A. Temperature
- B. Degree of dilution
- C. Nature of electrolyte
- D. Speed of ions
Explanation: Electrical conductivity depends on temperature. The electrical conductivity of a metal decreases with increase in temperature because the…
Correct answer: Temperature- A. BeCl2 and CO2
- B. NH3 and BF3
- C. SCl2 and H2O
- D. CH4 and NH4+
Explanation: The correct answer is b) NH3 and BF3. These two species have different shapes (trigonal pyramidal and trigonal planar, respectively).
Correct answer: NH3 and BF3- A. S-S overlapping
- B. S-Pz overlapping
- C. S-Px overlapping
- D. Pz - Pz overlapping
Explanation: In formation of HF, 1s orbital of H overlaps with 2Pz orbital to F to form bond. Therefore bonding is due to S-Pz overlapping.
Correct answer: S-Pz overlapping- A. Hydrogen bonding
- B. Dipole - dipole interaction
- C. London forces
- D. Both (b) and (c)
Explanation: The H- atom develops sufficient polar positive charge. Thus, partial positive charged hydrogen atom can form a strong H-bond with oxygen…
Correct answer: Hydrogen bonding- A. NH3
- B. H2O
- C. BF3
- D. SO2
Explanation: BF3 (boron trifluoride) is a trigonal planar molecule with three fluorine atoms arranged symmetrically around a central boron atom.
Correct answer: BF3- A. HF
- B. H2O
- C. NH3
- D. All of the above
Explanation: H2O, being a polar molecule, is capable of forming extensive hydrogen bonds with other water molecules, and it is also able to form…
Correct answer: H2O- A. N2H5+
- B. BaCl2
- C. HCl
- D. H2O
Explanation: The compound that contains the coordinate covalent bond is N2H5+ (hydrazinium ion), where the nitrogen atom donates a pair of electrons to…
Correct answer: N2H5+- A. Only ionic
- B. Covalent and coordinate
- C. Only covalent
- D. Covalent and ionic
Explanation: In N2O5, the combining atoms are nitrogen and oxygen. As both of them are non-metals.
Correct answer: Covalent and coordinate- A. Linear
- B. Tetrahedral
- C. Angular
- D. Trigonal Planar
Explanation: SnCl2 (Tin dichloride) has a bent or V-shaped geometry, which is an example of an angular or non-linear shape.
Correct answer: Angular- A. The value of electron affinity is always positive
- B. The value of electron affinity is always negative
- C. The value of first electron affinity is always positive
- D. The value of first electron affinity is always negative
Explanation: Whenever an electron is added to a neutral atom, energy is released out so the first electron affinity is always negative.
Correct answer: The value of first electron affinity is always negative- A. Covalent bond
- B. Dative bond
- C. Ionic bond
- D. Metallic bond
Explanation: An Ionic bond, also called an electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions…
Correct answer: Ionic bond- A. Bond is formed by the overlapping of half-filled orbitals
- B. Bond is formed by the attraction of positive and negative ions
- C. Bond is formed by the overlapping of "s" orbital is strong
- D. Bond formed by the large sized atoms is strong
Explanation: Bonding tends to take place between the outermost electrons of an atom (or outermost shell).
Correct answer: Bond formed by the large sized atoms is strong- A. Metallic
- B. Ionic
- C. Covalent
- D. Coordinate Covalent
Explanation: The type of bonding in Sodium (Na) is metallic (Option A). 'Metallic bonding' implies the presence of an attractive force between…
Correct answer: Metallic- A. F-F
- B. Cl-Cl
- C. Br-Br
- D. I-I
Explanation: Bond energy( B.E ) is a measure of the bond strength of a chemical bond, and is the amount of energy needed to break the atoms involved in…
Correct answer: Cl-Cl- A. Layered structure of metals
- B. Freely moving electrons
- C. Loosely held metal atoms
- D. Vibrational movement of metals
Explanation: The thermal conductivity of any physical material is a measure of its potential to conduct heat.
Correct answer: Freely moving electrons- A. C2H5OH
- B. NaCl
- C. SiO2
- D. CH4
Explanation: A polar molecule has a net dipole moment and partial charges in the same molecule due to difference in electronegativity.
Correct answer: C2H5OH- A. Equal to zero
- B. Equal to 0.5
- C. More than 1.7
- D. Less than 1.7
Explanation: Electronegativity is a measure of an atom's ability to attract electrons towards itself in a chemical bond.
Correct answer: More than 1.7- A. Na+
- B. Ca2+
- C. Li+
- D. Al3+
Explanation: The hydration energy is the energy released when a gaseous ion is dissolved in excess water to form an infinitely dilute solution.
Correct answer: Al3+- A. Hg
- B. Distilled water
- C. NaCl(l)
- D. Dilute sugar solution
Explanation: Pure distilled water is a poor conductor of electricity. Water itself is a good electrical insulator, but it can conduct electricity when…
Correct answer: Distilled water