MCQ Class 11 Chemistry Chapter 4 Chemical Bonding And Molecular Structure Advertisement MCQ’s For All Chapters – Chemistry Class 11th 1. Which molecule has a bond order of 3 according to the Lewis description?H₂O₂N₂F₂Question 1 of 202. What happens to bond length when bond order increases?It increasesIt remains unchangedIt decreasesIt becomes zeroQuestion 2 of 203. Why are the two O–O bond lengths in ozone equal?Ozone contains no electronsOzone is accurately represented by only one Lewis structureOzone is described by a resonance hybridBoth oxygen atoms have different charges onlyQuestion 3 of 204. What is a nonpolar covalent bond?A bond in which electrons are equally attracted by similar atomsA bond formed only between ionsA bond containing only lone pairsA bond in which electrons are completely transferredQuestion 4 of 205. Which molecule has zero dipole moment because its two equal bond dipoles cancel each other?H₂ONH₃BeF₂HFQuestion 5 of 206. Which molecule has a higher dipole moment according to the given comparison?NF₃NH₃BF₃H₂Question 6 of 207. According to VSEPR theory, what mainly determines the shape of a molecule?Number of neutronsNumber of valence-shell electron pairs around the central atomAtomic mass onlyNumber of inner-shell electronsQuestion 7 of 208. Which type of electron-pair repulsion is the strongest?Bond pair–bond pairLone pair–bond pairLone pair–lone pairProton–electronQuestion 8 of 209. What is the geometry of BF₃ according to VSEPR theory?LinearTetrahedralTrigonal planarOctahedralQuestion 9 of 2010. What is the bond angle in CH₄ associated with sp³ hybridisation?90°104.5°120°109.5°Question 10 of 2011. Which type of overlap forms a sigma bond?Sidewise overlap onlyEnd-to-end overlap along the internuclear axisOverlap perpendicular to the internuclear axis onlyNo orbital overlapQuestion 11 of 2012. Which statement about a pi bond is correct?It is formed by head-on overlapIt is formed by sidewise overlap of orbitalsIt is always stronger than a sigma bondIt contains no electron densityQuestion 12 of 2013. Which type of hybridisation produces two equivalent hybrid orbitals?spsp²sp³sp³d²Question 13 of 2014. What is the geometry of BCl₃?LinearTrigonal planarTetrahedralTrigonal pyramidalQuestion 14 of 2015. What is the geometry of SF₆?TetrahedralTrigonal planarOctahedralLinearQuestion 15 of 2016. In PCl₅, why are the axial bonds slightly longer and weaker than the equatorial bonds?Axial bonds contain no electronsAxial bond pairs experience greater repulsion from equatorial bond pairsEquatorial bonds have no overlapAxial atoms have no valence electronsQuestion 16 of 2017. What is the main difference between an atomic orbital and a molecular orbital?An atomic orbital is polycentric while a molecular orbital is monocentricAn atomic orbital is monocentric while a molecular orbital is polycentricBoth are always monocentricBoth are always polycentricQuestion 17 of 2018. What is the bond order of H₂ according to molecular orbital theory?00.512Question 18 of 2019. Why is O₂ paramagnetic?It has no electronsIt contains two unpaired electrons in antibonding molecular orbitalsAll its electrons are pairedIts bond order is zeroQuestion 19 of 2020. Which statement correctly describes an intermolecular hydrogen bond?It occurs only within one moleculeIt forms between molecules of the same or different compoundsIt is stronger than a covalent bondIt occurs only between carbon atomsQuestion 20 of 20 Loading...
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