Solved Chemistry MCQ Test Series on Chemical Bonding and Molecular Structure for NEET, IIT, JEE main

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Chemical Bonding and Molecular Structure

Syllabus :

Chemical combination; Kossel-Lewis Approach to Chemical Bonding; Lattice Energy; Covalent Bond; Octet Rule; Ionic and electrovalent Bond; Electrovalency; Covalency; Writing formula of an ionic compound; Coordinate Bond; Metallic Bond; Bond parameters - bond length, bond angle, bond enthalpy, bond order, resonance structures, polarity of bonds; The Valence Shell Electron Pair Repulsion (VSEPR) Theory; Valence Bond Theory; Geometry of molecules; Hybridisation; Molecular Orbital Theory; Bonding in some Homonuclear Diatomic Molecules; Hydrogen Bonding

Chemistry Solution: Chemical Bonding and Molecular Structure

MCQ Test Series – Set 4 (Q No.31-40)

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Question 31: Among the following compounds the one that is polar and has the central atom with sp² hybridisation is:

a. H₂CO₃

b. SiF₄

c. BF₃

d. HClO₂

Question 32: The bond order –

a. Can have negative value

b. Is any number other than zero

c. Is any integer

d. Can have any value including zero

Question 33: Which of the following molecular species has unpaired electron(s)?

a. N₂

b. F₂

c. O₂^-

d. O₂^2-

Question 34: Which compound has planar structure?

a. XeF₄

b. XeOF_2­

c. XeO₂F₂

d. XeO₄

Question 35: Molecular orbital theory is preferred over valence bond theory as it can explain:

a. Bond strength

b. Geometry of molecule

c. The magnetic nature of the molecule

d. None of the above

Question 36: Acetylene consists of –

a. Both sigma and pi bonds

b. Sigma bond only

c. Pi bond only

d. None of these

Question 37: Which among the following has the highest volatility?

a. H₂O

b. H₂S

c. H₂Se

d. H₂Te

Question 38: Which one of the following is not the resonating structure of CO₂:

a. O ≡ C = O

b. O = C = O

c. ^–O – C ≡ O⁺

d. ⁺O ≡ C – O^-

Question 39: Born Haber cycle is based on:

a. Law of conservation of mass

b. Law of conservation of energy

c. Fajan’s law

d. Charle’s law

Question 40: Which of the following models best describes the bonding within a layer of the graphite structure?

a. Metallic bonding

b. Ionic bonding

c. Non-metallic covalent bonding

d. Van der Waals forces

India Study Solution - Chemistry Solutions and Guide

MCQ Test Series: Chemical Bonding and Molecular Structure

Solutions of Set 4 (Q. No.31 – 40)

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Answer 32: (d). Answer 33: (c). Answer 34: (a). Answer 35: (c). Answer 36: (a). Answer 37: (b). Answer 38: (a). Answer 39: (b). Answer 40: (c).

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Chemical Bonding and Molecular Structure - Online solved Chemistry Test Series, Questions Answers for IITJEE, NEET, Entrance Exams

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Practice Questions Answers (Objective Questions with Solutions)

Chemical Bonding and Molecular Structure

Syllabus :

Chemical combination; Kossel-Lewis Approach to Chemical Bonding; Lattice Energy; Covalent Bond; Octet Rule; Ionic and electrovalent Bond; Electrovalency; Covalency; Writing formula of an ionic compound; Coordinate Bond; Metallic Bond; Bond parameters - bond length, bond angle, bond enthalpy, bond order, resonance structures, polarity of bonds; The Valence Shell Electron Pair Repulsion (VSEPR) Theory; Valence Bond Theory; Geometry of molecules; Hybridisation; Molecular Orbital Theory; Bonding in some Homonuclear Diatomic Molecules; Hydrogen Bonding

Chemistry Solved Test Series: Chemical Bonding and Molecular Structure

MCQ Test Series – Set 3 (Q No.21-30)

Question 21: The molecule that deviates from octet rule is –

a. CCl₄

b. BF₃

c. MgO

d. NCl₃

Question 22: The sigma and π-bonds present in benzene ring are:

a. Three sigma and three pi

b. Six sigma and three pi

c. Six pi and three sigma

d. Nine sigma and three pi

Question 23: NH₃ and BF₃ combine readily because of the formation of:

a. A covalent bond

b. A hydrogen bond

c. A coordinate bond

d. An ionic bond

Question 24: Which of the following bonds has the highest energy?

a. S-S

b. O-O

c. Se-Se

d. Te-Te

Question 25: Which is not true for resonance?

a. Identical bonding

b. Identical arrangement of atoms

c. Same number of paired electrons

d. Structure with nearly same energies

Question 26: Which of the following contains both electrovalent and covalent bonds?

a. MgCl₂

b. H₂O

c. NH₄Cl

d. None

Question 27: Which is a covalent compound?

a. RbF

b. MgCl₂

c. CaC₂

d. NH₃

Question 28: Which one of the following species is planar and non-planar with two lone pairs of electrons on the central atom?

a. ClF₃

b. XeF₅^-

c. PCl₅

d. BeF₅

Question 29: Hybridisation of carbon in CO_2­ is –

a. sp³

b. dsp²

c. sp

d. sp²

Question 30: The high boiling point of water is due to:

a. Its high specific heat

b. Hydrogen bonding between the molecules

c. Weak dissociation of water molecules

d. Its high dielectric constant

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Chemistry Solved Objective Test Series: Chemical Bonding and Molecular Structure for NEET, IITJEE

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Chemistry Test Series (MCQ Practice Questions)

Chemical Bonding and Molecular Structure

Syllabus:

Chemical combination; Kossel-Lewis Approach to Chemical Bonding; Lattice Energy; Covalent Bond; Octet Rule; Ionic and electrovalent Bond; Electrovalency; Covalency; Writing formula of an ionic compound; Coordinate Bond; Metallic Bond; Bond parameters - bond length, bond angle, bond enthalpy, bond order, resonance structures, polarity of bonds; The Valence Shell Electron Pair Repulsion (VSEPR) Theory; Valence Bond Theory; Geometry of molecules; Hybridisation; Molecular Orbital Theory; Bonding in some Homonuclear Diatomic Molecules; Hydrogen Bonding

Chemistry Test Series: Chemical Bonding and Molecular Structure

MCQ Test Series – Set 2 (Q. No.11-20)

Question 11: The attraction that non-polar molecules have for each other is primarily caused by –

a. Van der Waal’s forces

b. Difference in electronegativities

c. Hydrogen bonding

d. High ionisation energy

Question 12: The number of types of bonds between two carbon atoms in calcium carbide is:

a. One sigma, one pi

b. Two sigma, one pi

c. Two sigma, two pi

d. One sigma, two pi

Question 13: Which of the following species is diamagnetic in nature?

a. He₂⁺

b. H₂

c. H₂⁺

d. H₂^-

Question 14: Which of the following molecules has the highest bond order?

a. O₂^-

b. O₂

c. O₂⁺

d. O₂^2-

Question 15: Molten sodium chloride conducts electricity due to the presence of –

a. Free electrons

b. Free ions

c. Free molecules

d. Free atoms

Question 16: Which of the following have low lattice energy?

a. Cs-F

b. Cs-Cl

c. Cs-Br

d. Cs-I

Question 17: Which one is electron deficient compound?

a. ICl

b. BCl₃

c. NH₃

d. PCl₃

Question 18: Which of the following is least ionic?

a. BeI₂

b. BeCl₂

c. BeBr₂

d. BeF₂

Question 19: The shape of sulphate ion is –

a. Tetrahedral

b. Square planar

c. Trigonal

d. Trigonal planar

Question 20: Which of the following has pπ – dπ bonding?

a. NO₃^-

b. SO₃^2-

c. BO₃^3-

d. CO₃^2-

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Chemistry Objective Test Questions with Solutions: Chemical Bonding and Molecular Structure

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India Study Solution Chemistry Test Series (MCQ Practice Questions)

Chemical Bonding and Molecular Structure

Syllabus

Chemical combination; Kossel-Lewis Approach to Chemical Bonding; Lattice Energy; Covalent Bond; Octet Rule; Ionic and electrovalent Bond; Electrovalency; Covalency; Writing formula of an ionic compound; Coordinate Bond; Metallic Bond; Bond parameters - bond length, bond angle, bond enthalpy, bond order, resonance structures, polarity of bonds; The Valence Shell Electron Pair Repulsion (VSEPR) Theory; Valence Bond Theory; Geometry of molecules; Hybridisation; Molecular Orbital Theory; Bonding in some Homonuclear Diatomic Molecules; Hydrogen Bonding

Chemistry Test Series: Chemical Bonding and Molecular Structure

MCQ Test Series – Set 1 (Q. No. 1-10)

Question 1: Tendency of I^-, Br^-, Cl^- and F^- to be oxidised is in order:

a. I^- > Br^- > Cl^- > F^-

b. I^- < Br^- < Cl^- < F^-

c. I^- < Cl^- > F^- > Br^-

d. I^- = Br^- > Cl^- = F^-

Question 2: Some statements about valence bond theory are given below –

a. The strength of bond depends upon extent of overlapping

b. The theory explains the directional nature of covalent bond

c. According to this theory oxygen molecule is paramagnetic in nature

(1) All are correct   (2) Only a and c   (3) Only a and b are correct   (4) All are wrong

Question 3: Which has maximum covalent character?

a. NaCl

b. SiCl₄

c. AlCl₃

d. MgCl₂

Question 4: The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is –

a. 2

b. 3

c. 4

d. 1

Question 5: The correct order regarding the electronegativity of hybrid orbitals of carbon is –

a. sp < sp² < sp³

b. sp > sp² < sp³

c. sp > sp² > sp³

d. sp < sp² > sp³

Question 6: The electronegativity of O, F, N, Cl and H are 3.5, 4.0, 3.2, 3.0 and 2.1 respectively. The strongest bond will be:

a. F-O

b. O-Cl

c. N-H

d. O-H

Question 7: When two atoms of chlorine combine to form one molecule of chlorine gas, the energy of the molecule is –

a. Greater than that of separate atoms

b. Equal to that of separate atoms

c. Lower than that of separate atoms

d. None of these

Question 8: Which of the following species is not correctly matched with its geometry according to the VSEPR theory?

a. BrF₆⁺ → octahedral

b. SnCl₅^- → trigonal bipyramidal

c. ClF₂^- → linear

d. IF₄⁺ → T-shape

Question 9: Variable valency is shown by:

a. s-block elements

b. d-block elements

c. p- and d-block elements

d. all elements

Question 10: Covalent compounds are generally soluble in –

a. Polar solvents

b. Non-polar solvents

c. Concentrated acids

d. All solvents

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