MCQs For NCERT Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure

Please refer to the MCQ Questions for Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure with Answers. The following Chemical Bonding and Molecular Structure Class 11 Chemistry MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Chemistry with Answers for all chapters in your NCERT Class 11 Chemistry book.

Chemical Bonding and Molecular Structure Class 11 MCQ Questions with Answers

See below Chemical Bonding and Molecular Structure Class 11 Chemistry MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. According to VSEPR theory the geometry of a covalent molecules depends upon
(a) the number of bond pairs of electrons
(b) the number of lone pairs of electrons
(c) the number of electron pairs present in the outer shell of the central atom
(d) All the above

Question. The geometry of ClO₃^– ion according to Valence Shell ElectronPair Repulsion (VSEPR) theory will be
(a) planar triangular
(b) pyramidal
(c) tetrahedral
(d) square planar

Question. In BrF₃ molecule, the lone pairs occupy equatorial positions to minimize
(a) lone pair – bond pair repulsion only
(b) bond pair – bond pair repulsion only
(c) lone pair – lone pair repulsion and lone pair – bond pair repulsion
(d) lone pair – lone pair repulsion only

Question. Which of the correct increasing order of lone pair of electrons on the central atom?
(a) IF₇ < IF₅ < CIF₃ < XeF₂
(b) IF₇ < XeF₂ < CIF₂ < IF₅
(c) IF₇ < CIF₃ < XeF₂ < IF₅
(d) IF₇ < XeF₂ < IF₅ < CIF₃

Question. The covalent bond length is the shortest in which one of the following bonds?
(a) C — O
(b) C — C
(c) C ≡ N
(d) O — H

Question. Hydrogen chloride molecule contains
(a) polar covalent bond
(b) double bond
(c) co-ordinate bond
(d) electrovalent bond

Question. The number of lone pair and bond pair of electrons on the sulphur atom in sulphur dioxide molecule are respectively
(a) 1 and 3
(b) 4 and 1
(c) 3 and 1
(d) 1 and 4

Question. Among the following molecules : SO₂, SF₄, CIF₃, BrF₅ and XeF₄, which of the following shapes does not describe any of the molecules mentioned?
(a) Bent
(b) Trigonal bipyramidal
(c) See-saw
(d) T-shape

Question. A σ-bonded molecule MX₃ is T-shaped. The number of non-bonding pairs of electron is
(a) 0
(b) 2
(c) 1
(d) can be predicted only if atomic number of M is known.

Question. Shape of methane molecule is
(a) tetrahedral
(b) pyramidal
(c) octahedral
(d) square planar

Question. The shape of stannous chloride molecule is
(a) see-saw
(b) square planar
(c) trigonal pyramidal
(d) bent

Question. Which of the following statements is false ?
(a) H₂ molecule has one sigma bond
(b) HCl molecule has one sigma bond
(c) Water molecule has two sigma bonds and two lone pairs
(d) Acetylene molecule has three pi bonds and three sigma bonds

Question. The number of sigma (σ) and pi (π) bonds present in 1,3,5,7 octatetraene respectively are
(a) 14 and 3
(b) 17 and 4
(c) 16 and 5
(d) 15 and 4

Question. A molecule has two lone pairs and two bond pairs around the central atom. The molecule shape is expected to be
(a) V-shaped
(b) triangular
(c) linear
(d) tetrahedral

Question. Using VSEPR theory, predict the species which has square pyramidal shape
(a) SnCl₂
(b) CCl₄
(c) SO₃
(d) BrF₅

Question. Allyl cyanide molecule contains
(a) 9 sigma bonds, 4 pi bonds and no lone pair
(b) 9 sigma bonds, 3 pi bonds and one lone pair
(c) 8 sigma bonds, 5 pi bonds and one lone pair
(d) 8 sigma bonds, 3 pi bonds and two lone pairs

Question. The molecule not having π-bond is
(a) Cl₂
(b) O₂
(c) N₂
(d) CO₂

Question. The enolic form of a acetone contains
(a) 9 sigma bonds, 1 pi bond and 2 lone pairs
(b) 8 sigma bonds, 2 pi bonds and 2 lone pairs
(c) 10 sigma bonds, 1 pi bond and 1 lone pair
(d) 9 sigma bonds, 2 pi bonds and 1 lone pair

Question. Linear combination of two hybridized orbitals belonging to two atoms and each having one electron leads to a
(a) sigma bond
(b) double bond
(c) co-ordinate covalent bond
(d) pi bond.

Question. Which of the following statements is not correct ?
(a) Double bond is shorter than a single bond
(b) Sigma bond is weaker than a π(pi) bond
(c) Double bond is stronger than a single bond
(d) Covalent bond is stronger than hydrogen bond

Question. As the s-character of hybridised orbital increases, the bond angle
(a) increase
(b) decrease
(c) becomes zero
(d) does not change

Question. In hexa-1, 3-diene-5-yne the number of C —C δ, C — C π and C — H σ bonds, respectively are
(a) 5, 4 and 6
(b) 6, 3 and 5
(c) 5, 3 and 6
(d) 6, 4 and 5

Question. The angle between the overlapping of one s-orbital and one p-orbital is
(a) 180°
(b) 120°
(c) 109°28′
(d) 120° 60′

Question. The nature of hybridisation in the ammonia molecule is
(a) sp²
(b) dp²
(c) sp
(d) sp³

Question. Which of the following will have sp³ d³ hybridisation?
(a) BrF₅
(b) PCl₅
(c) XeF₆
(d) SF₆

Question. The shape of CO₂ molecule is
(a) linear
(b) tetrahedral
(b) planar
(d) pyramidal

Question. The hybridisation state of carbon in fullerene is
(a) sp
(b) sp²
(c) sp³
(d) sp³d

Question. Which of the following statements is true for an ion having sp³ hybridisation?
(a) all bonds are ionic
(b) H-bonds are situated at the corners of a square
(c) all bonds are co-ordinate covalent
(d) H-atoms are situated at the corners of tetrahedron

Question. The shape of sulphate ion is
(a) square planar
(b) triagonal
(c) trigonal planar
(d) tetrahedral

Question. The strength of bonds formed by s–s and p–p, s–p overlap in the order of
(a) s–p > s–s > p–p
(b) p–p > s–s > s–p
(c) s–s > p–p > s–p
(d) s–s > s–p > p–p

Question. Which of the following molecule does not have a linear arrangement of atoms ?
(a) H₂S
(b) C₂H₂
(c) BeH₂
(d) CO₂

Question. In which one of the following molecules the central atom said to adopt sp2 hybridization?
(a) BeF₂
(b) BF₃
(c) C₂H₂
(d) NH₃

Question. The trigonal bipyramidal geometry is obtained from the hybridisation
(a) dsp³ or sp³d
(b) dsp² or sp2d
(c) d ²sp³ or sp³d²
(d) None of these

Question. A sp³-hybrid orbital contains
(a) 25% s-character
(b) 75% s-character
(c) 50% s-character
(d) 25% p-character

Question. The types of hybridisation of the five carbon atoms from left to right in the molecule CH₃ — CH == C == CH — CH₃ are
(a) sp³, sp², sp², sp², sp³
(b) sp³, sp, sp², sp², sp³
(c) sp³, sp², sp, sp², sp³
(d) sp³, sp², sp², sp, sp³

Question. Pick out the incorrect statement from the following
(a) sp hybrid orbitals are equivalent and are at an angle of 180° with each other
(b) sp² hybrid orbitals are equivalent and bond angle between any two of them is 120°
(c) sp³d² hybrid orbitals are equivalent and are oriented towards corners of a regular octahedron
(d) sp³d³ hybrid orbitals are not equivalent

Question. All carbon atoms are sp² hybridised in
(a) 1, 3-butadiene
(b) CH₂ = C = CH₂
(c) cyclohexane
(d) 2-butene

Question. Which one of the following is not correct in respect of hybridization of orbitals?
(a) The orbitals present in the valence shell only are hybridized
(b) The orbitals undergoing hybridization have almost equal energy
(c) Promotion of electron is not essential condition for hybridization
(d) Pure atomic orbitals are more effective in forming stable bonds than hybrid orbitals

Question. Molecular orbital theory was given by
(a) Kossel
(b) Mosley
(c) Mulliken
(d) Werner

Question. With increasing bond order, stability of bond
(a) Remain unaltered
(b) Decreases
(c) Increases
(d) None of these

Question. Which of the following corresponds unstable molecule? Here Nb is number of bonding electrons and Na is number of antibonding electrons.
(a) Nb > Na
(b) Nb < Na
(c) Na = Nb
(d) Both (b) and (c)

Question. If Nx is the number of bonding orbitals of an atom and Ny is the number of antibonding orbitals, then the molecule/atom will be stable if
(a) N_x > N_y
(b) N_x = N_y
(c) N_x < N_y
(d) N_x ≤ N_y

Question. In the molecular orbital diagram for O₂ ⁺ ion, the highest occupied orbital is
(a) σ MO orbital
(b) π MO orbital
(c) π* MO orbital
(d) σ* MO orbital

Question. The theory capable of explaining paramagnetic behaviour of oxygen is
(a) resonance theory
(b) V.S.E.P.R. theory
(c) molecular orbital theory
(d) valence bond energy

Question. In an anti-bonding molecular orbital, electron density is minimum
(a) around one atom of the molecule
(b) between the two nuclei of the molecule
(c) at the region away from the nuclei of the molecule
(d) at no place

Question. When two atomic orbitals combine, they form
(a) one molecular orbital
(b) two molecular orbital
(c) three molecular orbital
(d) four molecular orbital

Question. Paramagnetism is exhibited by molecules
(a) not attracted into a magnetic field
(b) containing only paired electrons
(c) carrying a positive charge
(d) containing unpaired electrons

Question. The difference in energy between the molecular orbital formed and the combining atomic orbitals is called
(a) bond energy
(b) activation energy
(c) stabilization energy
(d) destabilization energy

Question. The bond order in N₂⁺ is
(a) 1.5
(b) 3.0
(c) 2.5
(d) 2.0

Question. Which molecule has the highest bond order?
(a) N₂
(b) Li₂
(c) He₂
(d) O₂

Question. Which of the following order of bond angles is correct?
(a) BF₃ < NF₃ < PF₃ < ClF₃ 
(b) BF₃ < NF₃ < PF₃ > ClF₃
(c) ClF₃ < PF₃ < NF₃ < BF₃
(d) BF₃ < NF₃ < PF₃ < ClF₃       

Question. The percentage of p -character of the hybrid orbitals in graphite and diamond are respecitvely, 
(a) 50 and 75
(b) 67 and 75
(c) 33 and 75
(d) 33 and 25     

Question. The state of hybridisation of the central atom and the number of lone pairs over the central atom in POCI₃ are
(a) sp ,0
(b) sp², 0 
(c) sp³, 0
(d) dsp², 1       

Question. The hybridisation of orbitals ofN atom in NO₃^– ,No₂⁺ and NH₄⁺arerespectively 
(a) sp, sp², sp³
(b) sp², sp, sp³
(c) sp, sp³, sp²
(d) sp², sp³, sp       

Question. The structure of IF₇ is
(a) square pyramid
(b) trigonal bipyramid
(c) octahedral
(d) pentagonal bipyramid       

Question. Which of the following has maximum number oflone pairs associated with Xe ? 
(a) XeO₃
(b) XeF₄
(c) XeF₆
(d) XeF₂         

Question. The number of types of bonds between two carbon atoms in calcium carbide is 
(a) one sigma(σ) two pi(π)
(b) one sigma(σ)one pi(π)
(c) two sigma(σ)one pi(π)
(d) two sigma(σ)two pi(π)       

Question. Number of non-bonding electron pair on Xe in XeF₆ , XeF₄ and XeF₂ respectively will be 
(a) 6,4,2
(b) l,2,3
(c) 3,2, 1
(d) 0,3,2     

Question. The number of sigma (σ) and pi (n) covalent bonds respectively in benzene nitrile are 
(a) 5, 13
(b) 15, 3
(c) 13, 5
(d) 16, 2       

Question. Hybridisation shown by carbon and oxygen of—OH group in phenol are respectively 
(a) sp², sp²
(b) sp³, sp³
(c) sp, sp²
(d) sp², sp³       

Question. Based on VSEPR theory, the number of 90 degree F—Br—F angles in BrF₅ is 
(a) 0
(b) 1
(c) 2
(d) 3         

Question. The species having pyramidal shape is
(a) SO₃
(b) BrF₃
(c) SiO₃^2–
(d) OSF₂       

Question. Which one of the following conversions involve change in both hybridisation and shape? 
(a) CH₄ → C₂H₆
(b) NH₃ → NH₄⁺
(c) BF₃ → BF₄
(d) H₂O → H₃O⁺       

Question. Which of the following has sp² hybridisation? 
(a) C₂H⁶
(b) C₂H₄
(c) BeCl₂
(d) C₂H₂   

Question. The AsF₅ molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are
(a) d_{x2 -y2}, d_z2, s, P_x, P_y
(b) d_x2, s, P_x, P_z
(c) S,P_x,P_y ,P_z,d_z2
(d) d_{x2 -y2}, S, p_x, p_y     

Question. The enolic fom1 of acetone contains 
(a) 9 sigma bonds, 1 pi bond and 2 lone pairs
(b) 8 sigma bonds, 2 pi bond and 2 lone pairs
(c) 10 sigma bonds, l pi bond and l Ione pair
(d) 9 sigma bonds, 2 pi bond and l lone pair   

Question. A a-bonded molecule MX₃ is T-shaped. The number non-bonding pairs of electron is 
(a) 0
(b) 2
(c) 1
(d) can be predicted only if atomic number of Mis known     

Question. In which of the following species, all the three types of hybrid carbons are present ? 
(a) CH₂ =C=CH₂
(b) CH₃ —CH=CH—CH₂⁺
(c) CH₃ — C=C—CH₂⁺
(d) CH₃ —CH=CH—CH₂^–           

Question. In XeF₆, oxidation state and state of hybridisation of Xe and shape of the molecule are, respectively 
(a) + 6, sp³d³, distorted octahedral
(b) +4, sp³d², square planar
(c) + 6, sp³, pyramidal
(d) + 6, sp³d², square pyramidal     

Question. Which of the following species is non-linear? 
(a) ICI₂^–
(b) I₃^–
(c) N₃^–
(d) CIO₂^–     

Question. The state of hybridisation ofS in SF₄ is
(a) sp³ and has a lone pair of electron
(b) sp² and has tetrahedral structure
(c) sp³ d and has a trigonal bipyramidal structure
(d) sp³d² and has an octahedral structure     

Question. The bond angle and percentage of d-character in SF₆ are
(a) 120°, 20%
(b) 90°, 33%
(c) 109°, 25%
(d) 90°, 25%   

Question. The compound in which underlined carbon uses only its sp³ hybrid orbitals for bond formation is 
(a) CH₃COOH
(b) CH₃CONH₂
(c) CH₃CH₂OH
(d) CH₂CH=CH₂         

Question. In which of the following pair both molecules do not possess same type ofhybtidisation?
(a) CH₄ and H₂O
(c) SF₆ and XeF₄
(b) PCI₅ and SF₄
(d) BCl₃ and NCl₃     

Question. I. H—C—H angle in CH₄
II. CI—B—CI angle in BCl₃
III. F—I—F angle in IF₇ in a plane
IV. I—I—I angle in I₃^–
Increasing order of above bond angles is
(a) I < II < III < IV
(c) III < I < II < IV
(b) II < I < III < IV
(d) IV < II < I < III