Hybridization MCQs
Hybridization is the process of combining atomic orbitals (s and p) on a specific atom to create a new set of orbitals (equal in number to the original ones) that exhibit both s and p characteristics and are optimally arranged in space for covalent bonding. Hybridization typically involves s, p, and d orbitals. The hybrid orbitals in bonding atoms are named based on the atomic orbitals from which they are derived. The number of hybrid orbitals matches the number of atomic orbitals used to form them. Certain geometries correspond to specific bonding patterns in molecules, which gave rise to the concept of hybridization based on a mathematical model of bonding.
In which solvent does NaCl have maximum solubility?
(a) H₂O
(b) C₂H₅OH
(c) CH₃COCH₃
(d) C₂H₅OC₂H₅
The compound which contains both ionic and covalent bonds:
(a) KCl
(b) KCN
(c) CH4
(d) H2
BCl₃ is a planar molecule whereas NCl₃ is pyramidal because
(a) B-Cl bond is more polar than N-Cl bond
(b) N-Cl bond is more covalent than B-Cl bond
(c) the nitrogen atom is smaller than the boron atom
(d) BCl₃ has no lone pairs but NCl₃ has a lone pair of electrons
The total number of lone pairs of electrons in I₃⁻ ion is
(a) 3
(b) 6
(c) 9
(d) 12
Which one of the following pairs of molecules will have permanent dipole moments for both members?
(a) NO₂ and CO₂
(b) NO₂ and O₃
(c) SiF₄ and CO₂
(d) SiF₄ and NO₂
The main axis of a diatomic molecule is z, and the molecular orbitals px and py overlap to form which of the following orbitals?
(a) pi molecular orbital
(b) sigma molecular orbital
(c) gamma molecular orbital
(d) No bond will be formed
Which of the following compounds has the smallest bond angle in its molecule?
(a) H₂O
(b) H₂S
(c) NH₃
(d) SO₂
Ether is more volatile than alcohol having the same molecular formula. This is due to
(a) alcohols having resonance structures
(b) intermolecular hydrogen bonding in ethers
(c) intermolecular hydrogen bonding in alcohols
(d) the dipolar character of ethers
Which one of the following properties is not shown by NO?
(a) it is diamagnetic in the gaseous state
(b) it is a neutral oxide
(c) it combines with oxygen to form nitrogen dioxide
(d) its bond order is 2.5
The maximum number of 90° angles between bond pair-bond pair electrons is observed in
(a) dsp² hybridization
(b) sp³d hybridization
(c) dsp³ hybridization
(d) sp³d² hybridization
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