Free Chemical Bonding MCQs with Answers

• A. Sp2
• B. Sp3
• C. Sp
• D. dsp2

Explanation: In BeCl2, beryllium forms two sigma bonds and has no lone pair on the central atom, giving two electron domains.

• A. 115.5°
• B. 109.5°
• C. 105. 7°
• D. 180°

Explanation: In methane, each carbon atom is sp3 hybridised and the four bonding orbitals point towards the corners of a tetrahedron.

• A. All p-orbitals are involved
• B. One s and 3 p-orbitals are involved
• C. one p-orbital is involved
• D. four p-orbitals are involved

Explanation: In sp3 hybridization, one s orbital mixes with three p orbitals of the same shell to form four equivalent sp3 hybrid orbitals.

• A. Triangular
• B. Tetrahedral
• C. Square planner
• D. Linear

Explanation: sp3 hybridization produces four equivalent hybrid orbitals directed toward the corners of a tetrahedron, giving tetrahedral geometry in a…

• A. 2n
• B. n
• C. 3n
• D. impossible to predict

Explanation: When n atomic orbitals mix, they produce n hybrid orbitals because orbital mixing conserves the total number of orbitals.

• A. sp3
• B. sp2
• C. sp
• D. All

Explanation: In O2, each oxygen is commonly described as sp2 hybridized: two sp2 orbitals form sigma bonds or hold lone pairs, while an unhybridized p…

• A. sp2
• B. sp
• C. sp3
• D. none of the above

Explanation: In a cyano group, the carbon is bonded through a triple bond, which requires one sigma bond and two pi bonds.

• A. square planar
• B. trigonal pyramidal
• C. tetrahedral
• D. linear

Explanation: sp3 hybridization produces four equivalent hybrid orbitals directed toward the corners of a tetrahedron, giving a tetrahedral…

• A. 5 sigma bonds
• B. 4 sigma and 1 pi bonds
• C. 3 sigma and 2 pi bonds
• D. 2 sigma and 3 pi bonds

Explanation: Acetylene has the structure H-C≡C-H. Each C-H bond is one sigma bond, and the carbon-carbon triple bond contains one sigma bond plus two…

• A. Single covalent bond
• B. Hydrogen bond
• C. Double covalent bond
• D. Coordinate covalent bond

Explanation: A coordinate covalent bond forms when one species donates both electrons of the shared electron pair, although the pair is then shared by…

• A. 2
• B. 1
• C. 3
• D. 4

Explanation: In N2, the three shared electron pairs consist of one sigma bond and two pi bonds, so the bond order is 3.

• A. Bonding molecular orbital
• B. Antibonding molecular orbital
• C. Hybrid orbital
• D. Super atomic orbital

Explanation: An antibonding molecular orbital results from destructive overlap and lies at higher energy than the combining atomic orbitals.

• A. Un-hybrid orbitals
• B. Hybrid orbitals
• C. Hybrid and un hybrid orbitals
• D. atomic orbital and hybrid orbital

Explanation: A pi bond forms by sideways overlap of parallel, unhybridized atomic orbitals, usually p orbitals, above and below the internuclear axis.

• A. Bond
• B. Attractive force
• C. Interaction
• D. All of above represent same entity

Explanation: The attractive force that holds atoms together in a compound through electron sharing or transfer is called a chemical bond.

• A. Pi
• B. Sigma
• C. Both
• D. Neither

Explanation: Two p orbitals can overlap end-to-end along the internuclear axis to form a sigma bond, or side-by-side to form a pi bond.

• A. propene
• B. butanoic acid
• C. butanal
• D. ethoxy ethane

Explanation: Ethoxy ethane, CH3CH2-O-CH2CH3, contains only single bonds, and every single bond is a sigma bond.

• A. Two sigma bonds
• B. Two Pi bonds
• C. One sigma and one Pi bonds
• D. One sigma and two Pi bonds

Explanation: A double bond consists of one sigma bond formed by head-on orbital overlap and one pi bond formed by sideways overlap of p orbitals.

• A. Trigonal bipyramidal
• B. Linear
• C. Square bipyramidal
• D. Both A and C

Explanation: The triiodide ion, I3-, has five electron domains around the central iodine: two bonding pairs and three lone pairs.

• A. O
• B. 1
• C. 2
• D. 3

Explanation: In XeOF4, xenon has five bonding regions around it, consisting of four Xe-F bonds and one Xe=O region, plus one lone pair.

• A. Triangular
• B. Square planner
• C. Trigonal bipyramidal
• D. Octahedral

Explanation: Five bonding electron pairs around a central atom arrange themselves as far apart as possible in a trigonal bipyramidal electron geometry…