MCQ Questions Chapter 4 Chemical Bonding and Molecular Structure Class 11 Chemistry

Please refer to Chemical Bonding and Molecular Structure MCQ Questions Class 11 Chemistry below. These MCQ questions for Class 11 Chemistry with answers have been designed as per the latest NCERT, CBSE books, and syllabus issued for the current academic year. These objective questions for Chemical Bonding and Molecular Structure will help you to prepare for the exams and get more marks.

Chemical Bonding and Molecular Structure MCQ Questions Class 11 Chemistry

Please see solved MCQ Questions for Chemical Bonding and Molecular Structure in Class 11 Chemistry. All questions and answers have been prepared by expert faculty of standard 11 based on the latest examination guidelines.

MCQ Questions Class 11 Chemistry Chemical Bonding and Molecular Structure

Question. Which one of the following is a correct set?
(a) H₂O, sp³, angular
(b) BCI³,sp³, angular
(c) NH⁺₄, dsp², square planar
(d) CH⁴, dsp², tetrahedral

Question. The number of sigma and pi bonds in peroxodisu1phuric acid are respectively 
(a) 9 and 4
(b) 11 and 4
(c) 4 and 8
(d) 4 and 9     

Question. In which pair of species, both species do have the similar geometry? 
(a) CO₂ , SO₂
(b) NH₃ , BH₃
(c) CO^2-₃ , SO^2-₃
(d) SO^2-₄ , CO^–₄   

Question. The number of valence shell bonding electrons to be distributed in the Lewis electron dot model for HNNN is
(a) 6
(b) 10
(c) 11
(d) 16   

Question. The shape of XeF₄ molecule and hybridisation of xenon in it are 
(a) tetrahedral and sp³
(b) square planar and dsp²
(c) square planar and sp³d²
(d) octahedral and sp₃d₂         

Question. The percentage of p-character in the orbitals forming P—P bonds in P₄ is 
(a) 25
(b) 33
(c) 50
(d) 75       

Question. In TeCI₄ , the central atom tellurium involves 
(a) sp³ hybridisation
(b) sp³d hybridisation
(c) sp³d² hybridisation
(d) dsp² hybridisation         

Question. In BrF₃ molecule, the lone pairs occupy equatorial positions to minimise 
(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. Among the following, the pair in which the two species are not isostructural, is 
(a) SiF₄ and SF₄
(b) IO^–₃ and XeO₃
(c) BH^–₄ and NH⁺₄
(d) PF^–₆ and SF₆     

Question. Which one of the following compounds has sp² hybridisation?
(a) CO₂
(b) SO₂
(c) N₂O
(d) CO   

Question. In a regular octahedral molecule, MX ₆ the number of X — M — X bonds at 180° is
(a) three
(b) two
(c) six
(d) four   

Question. H₂O is di polar, whereas BeF₂ is not. It is because
(a) the electronegativity ofF is greater than that of O
(b) H₂O involves hydrogen bonding whereas BeF₂ is a discrete molecule
(c) H₂O is linear and BeF₂ is angular
(d) H₂O is angular and BeF₂ is linear     

Question. Which one of the following is paramagnetic? 
(a) N₂
(b) NO
(c) CO
(d) O₃       

Question. Assuming that Hund’s rule is violated, the bond order and magnetic nature of the diatomic molecule B₂ is 
(a) 1 and diamagnetic
(b) 0 and diamagnetic
(c) 1 and paramagnetic
(d) 0 and paramagnetic       

Question. The bond order in NO is 2.5 while that in NO⁺ is 3. Which of the following statements is tme for these two species ?
(a) Bond length in NO^– is greater than in NO 
(b) Bond length in NO is greater than in NO⁺
(c) Bond length in NO^– is equal to in NO
(d) Bond length is unpredictable     

Question. In a homonuclear molecule which of the following set of orbitals is degenerate? 
(a) σ2s and σ1s
(b) n2P_x and n2p_y
(c) n2P_x and σ2p_z
(d) σ2p_z and n2P_x       

Question. Which species has the highest bond order ?
(a) O₂
(b) O^2–₂
(c) N₂
(d) Both O₂ and O^2–₂       

Question. Peroxide ion
I. has five completely filled antibonding molecular orbitals
II. is diamagnetic
III. has bond order one
IV. is isoelectronic with neon
Which one of these is correct? 
( a) II and III
(b) I, II and II
(c) I, II and III
(d) I and IV         

Question. Given are O₂ , o;, o~+ and o~-, respectively. Find the correct increasing bond order 
(a) O₂ < O₂^2– < O²⁺₂ < O⁺₂
(b) O²⁺₂ < O₂< O⁺₂  < O²⁺₂
(c) O₂^2– < O₂ < O⁺₂ < O^2-₂
(d) O⁺₂ < O₂^2– < O₂ < O²⁺₂     

Question. The relationship between the dissociation energy of N₂ and N⁺₂ is 
(a) dissociation energy of N₂ = dissociation energy of N⁺₂
(b) dissociation energy of N₂ can either be lower or higher than the dissociation energy of N⁺₂
(c) dissociation energy of N⁺₂ > dissociation energy of N⁺₂
(d) dissociation energy of N; > dissociation energy of N₂     

Question. The species having bond order different from that in CO is
(a) NO^–
(b) NO⁺
(c) CN^–
(d) N₂   

Question. The bond order of N⁺₂ is 
(a) 1.5
(b) 3.0
(c) 2.5
(d) 2.0     

Question. The compound in which the number of dn-pn bonds are equal to those present in ClO₄^– 
(a) XeF₄
(b) XeO₃
(c) XeO₄
(d) XeF₆   

Question. The H-O-H bond angle in H₂O is 104. 5°. This fact can be best explained with the help of 
(a) valence shell electron pair I repulsion (VSEPR) theory
(b) molecular orbi tal theory
(c) presence of hydrogen bond
(d) electronegativity difference between hydrogen and oxygen atoms   

Question. Which of the following groups all do not have sp³d hybridisation? 
(a) ClF₃ , IF₃, XeF₃⁺
(b) ICI₂, ClF₂, I₃
(c) CIF₃, BrF₃, IF₃
(d) PCl₃, AsCI₃, PF₅     

Question. The C—H bond distance is the longest in
(a) C₂H₆
(b) C₂H₂
(c) C₂H₂Br₂
(d) C₂H₄   

Question. In methane the bond angle is 
(a) 180°
(b) 90°
(c) 109°
(d) 120°       

Question. How many electron pairs are present in valence shell of oxygen in water molecule ? 
(a) 4
(b) 1
(c) 2
(d) 3       

Question. In which of the following compound sp² hybridisation is absent ? 
(a) CH₂ = CH—CH= CH₂
(b) CH = C—CH₂—CH₃
(c) CH₂ —CH=CH₂
(d) CH₂ = CH—CH₂—CH₃     

Question. The actual geometry of NO^–₂ is 
(a) planar
(b) linear
(c) V-shape
(d) tetrahedral   

Question. The C—O—H bond angle in ethanol is nearly 
(a) 90°
(b) 104°
(c) 120°
(d) 180°     

Question. C—C bond length is maximum in 
(a) diamond
(b) graphite
(c) naphthalene
(d) fullerene     

Question. In which of the following pairs of molecules/ions both the species are not likely to exist?
(a) H₂⁺, He^2–₂
(b) H₂^–, He^2–₂
(c) H₂⁺, He₂
(d) H₂^–+, He²⁺₂     

Question. Which one of the following molecules is spected to exhibit diamagnetic behaviour?
(a) C₂
(b) N₂
(c) O₂
(d) S₂   

Question. Stability of the species Li₂ , Li₂^– and Li₂⁺ increases in the order of 
(a) Li2 < Li! < Li2
(c) Li2 < Li2 < Li!
(b) Li2 < Li! < Li2
(d) Li2 < Li2 < Li!         

Question. The bond order in the superoxide ion (O^–₂) is 
(a) 2.5
(b) 2
(c) 1.5
(d) 1         

Question. Oxygen molecules contains 
(a) no unpaired electron
(b) one unpaired electron
(c) two unpaired electrons
(d) three unpaired electrons
(e) four unpaired electrons       

Question. The paramagnetic behaviour of B₂ is due to the presence of
(a) two unpaired electrons in n_b MO 
(b) two unpaired electrons in n* MO
(c) two unpaired electrons in σ* MO
(d) two unpaired electrons in σ_b MO       

Question. As per molecular orbital theory, which can’t exist in stable state? 
(a) H₂
(b) H⁺₂
(c) H^–₂
(d) He₂       

Question. Which of the following is diamagnetic?
(a) H₂
(b) H^–₂
(c) H⁺₂
(d) He⁺₂   

Question. When O₂ is converted into H⁺₂
(a) both paramagnetic character and bond order increase
(b) bond order decreases
(c) paramagnetic character increases
(d) paramagnetic character decreases and the bond order increases     

Question. Which of the following is not correct with respect to bond length of the species ? 
(a) C₂ > C^2–₂
(b) B⁺₂ > B₂
(C) O₂ > O^–₂
(d) Nl⁺₂ > N₂   

Question. According of VSEPR theory the repulsion between different pair (lone or bond) of electrons obey the order Codes
(a) lp – bp > Ip – Ip > bp – bp
(b) Ip – bp > bp – bp > Ip – Ip
(c) Ip – Ip > Ip – bp > bp – bp
(d) bp – bp > Ip – Ip > Ip – bp     

Question. Bond angles of NH₃ , PH₃, AsH₃ and SbH₃ is in the order
(a) PH₃ > AsH₃ > SbH₃ > NNH₃
(b) SbH₃ > AsH₃ > PH₃ > NH₃
(c) SbH₃ > AsH₃ > NH₃ > PH₃
(d) NH₃ > PH₃ > AsH₃ > SbH₃   

Question. Shape and hybridisation of IF₅ respectively are
(a) trigonal bipyramidal, sp³d
(b) sea-saw, sp³d
(c) square pyramidal, sp³d²      
(d) pentagonal pyramidal, sp³d³     

Question. Which one of the following linear structure?
I.I₃^–
II NO₂^–
III. I₃⁺
IV. S0₂
V. N₃^–
(a) I, II and III
(b) IandV 
(c) II, III and IV
(d) All of these   

Question. The total number of lone pairs of electrons in melamine is
(a) 4
(b) 7 
(c) 6
(d) 9     

Question. What type of hydridisation takes place in the N atom of NH₃ ? 
(a) sp₂
(b) sp₃
(c) dsp₂
(d) sp       

Question. In which of the following pairs the two species are not isostructural? 
(a) CO^2-₃and NO_3^–
(b) PCl⁴₄and SiCl₄
(c) PF₃ and BrF₅
(d) AlF^3-₆ and SF₆     

Question. In which reaction, the hybridisation on the central atom changes from sp² to sp³ ? 
(a) NH₃ + H⁺ → NH₄⁺
(b) BF₃ + F^– → BF₄^–
(c) H₂O + H⁺ → H₃O⁺
(d) C₂H₂ + 2H₂ →  C₂H₆     

Question. How manycr σ and n bonds are present in given compound ?
     Ph-CH=C—C₂H₅
                 l
               CH₃  
(a) 19σ and 4n-bonds
(c) 25σ and 4n-bonds
(b) 22σ and 4n-bonds
(d) 26σ and 4n-bonds       

Question. BCI₃ is a planar molecule, while NCI₃ is pyramidal, because 
(a) N—Cl bond is more covalent than B—Cl bond
(b) nitrogen atom is smaller than boron atom
(c) B—Cl bond is more polar than N—Cl bond
(d) BCI₃ has no lone pair of electrons but NCI₃ has a lone pair of electrons   

Question. Which one of the following compounds has the smallest bond angle in its molecule ? 
(a) SO₂
(b) H₂O
(c) SH₂
(d) NH₃     

Question. The molecular shapes of SF₄ , CF₄ and XeF₄ are 
(a) different with 1, 0 and 2 lone pairs of electrons on the central atom, respectively
(b) different with 0, l and 2 lone pairs of electrons on the central atom, respectively
(c) the same with 1, 1 and 1 lone pair of electrons on the central atoms, respectively
(d) the same with 2, 0 and 1 lone pairs of electrons on the central atom, respectively       

Question. How many re-bonds are present in naphthalene? 
(a) 4
(b) 5
(c) 6
(d) 7   

Question. Valence bond theory of metallic bond was given by
(a) Dalton
(b) Drude! 
(c) Fajan
(d) Pauling     

Question. Which one of the following is a correct set with respect to molecule, hybridisation and shape ? 
(a) BeCI² , sp², linear
(b) BeCI² , sp², triangular planar
(c) BCI³ , sp², triangular planar
(d) BCI³ , sp³, tetrahedral     

Question. In I-butene number of σ-bonds is
(a) 8
(b) 10
(c) 11
(d) 12     

Question. Which of the following set of properties belong to PCl₅ ?
(a) sp³, tetrahedral, 4 valence shell pairs of electrons
(b) sp³d, trigonal bipyramidal, 5 valence shell pairs of electrons
(c) sp³d², octahedral, 6 valence she! II pairs of electrons
(d) sp³d, square planar, 4 valence shell pairs of electrons       

Question. Which of the following is correct? 
(a) The number of electrons present in the valence shell ofS in SF₆ is 12
(b) The rates of ionic reactions are very slow
(c) According to VSEPR theory, SnCl₂ is a linear molecule
(d) The correct order of ability to form ionic compounds among Na⁺, Mg²⁺ and Al³⁺ is Al³⁺ > Mg²⁺ > Na⁺     

Question. The d-orbital involved in sp³ d-hybridisation is
(a) d_{x2- y2}
(b) d_xy 
(c) d_z2
(d) d_zx       

Question. Which of the following is planar? 
(a) XeF₂
(b) XeO₃F
(c) XeO₂F₂
(d) XeF₄     

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

Question. Cl—P—Cl bond angles in PCI₅ molecule are 
(a) 120° and 90°
(b) 60° and 90°
(c) 60° and 120°
(d) 1200 and 30°     

Question. Amongst the following, the molecule that is linear is
(a) SO₂
(b) CO₂
(c) ClO₂
(d) NO₂           

Question. The bond angle in AsH₃ is greater than that in 
(a) NH₃
(b) H₂O
(c) BCl₃
(d) None of these   

Question. SF₂, SF₄ and SF₆ have the hybridisations at sulphur atom respectively, as 
(a) sp², sp³, sp²d²
(b) sp³, sp³, sp³d²
(c) sp³, sp³d, sp³d²
(d) sp³,, spd², d²sp³,     

Question. In pyrophosphoric acid, H₄P₂O₇ , number of σ and dn — pn bonds are respectively
( a) 8 and 2
(b) 6 and 2
(c) 12 and O      
(d) 12 and 2    

Question. The bond angle is smallest in
(a) H₂O
(b) H₂S
(c) BeCI₂
(d) N₂O         

Question. Two type F XF angles are present in which of the following molecules? (X = S, Xe, C) 
(a) SF₄
(b) XeF₄
(c) SF₆
(d) CF₄   

Question. Number of lone pair(s) in XeOF₄ is/are
(a) 0
(b) 1
(c) 2
(d) 3     

Question. In which of the following molecules/ions all the bonds are not equal ?
(a) SF₄
(b) SiF₄
(c) XeF₄
(d) BF₄