Which type of bond involves transfer of electrons? A) Covalent B) Ionic C) Metallic D) Hydrogen Answer: B) Ionic
Which bond involves sharing of electrons? A) Ionic B) Covalent C) Metallic D) Hydrogen Answer: B) Covalent
Which element is most likely to form a covalent bond? A) Sodium B) Chlorine C) Oxygen D) Calcium Answer: C) Oxygen
Ionic bonds are usually formed between: A) Two metals B) Two non-metals C) Metal and non-metal D) Noble gases Answer: C) Metal and non-metal
Which compound is ionic? A) CO₂ B) H₂O C) NaCl D) CH₄ Answer: C) NaCl
Covalent bonds are strongest between atoms with: A) High electronegativity difference B) Similar electronegativity C) Low atomic number D) High atomic mass Answer: B) Similar electronegativity
Which bond is present in H₂ molecule? A) Ionic B) Polar covalent C) Non-polar covalent D) Metallic Answer: C) Non-polar covalent
Which force holds metal atoms together? A) Covalent bond B) Ionic bond C) Metallic bond D) Hydrogen bond Answer: C) Metallic bond
Hydrogen bonding occurs in: A) CH₄ B) NH₃ C) CO₂ D) NaCl Answer: B) NH₃
Which compound has polar covalent bonds? A) O₂ B) H₂ C) HCl D) N₂ Answer: C) HCl
Which element tends to lose electrons? A) Oxygen B) Nitrogen C) Sodium D) Chlorine Answer: C) Sodium
Which element tends to gain electrons? A) Sodium B) Magnesium C) Chlorine D) Aluminum Answer: C) Chlorine
A bond formed by donation of lone pair is called: A) Ionic B) Covalent C) Coordinate D) Metallic Answer: C) Coordinate
Example of coordinate bond: A) NH₃ B) NH₄⁺ C) CH₄ D) CO₂ Answer: B) NH₄⁺
Which has highest bond energy? A) Single bond B) Double bond C) Triple bond D) Ionic bond Answer: C) Triple bond
Bond length decreases with: A) Increase in bond order B) Decrease in bond order C) Increase in atomic size D) Increase in temperature Answer: A) Increase in bond order
Sigma bond is formed by: A) Sideways overlap B) End-to-end overlap C) Ionic attraction D) Hydrogen bonding Answer: B) End-to-end overlap
Pi bond is formed by: A) Head-on overlap B) Sidewise overlap C) Electron transfer D) Nuclear fusion Answer: B) Sidewise overlap
Which bond is weaker? A) Sigma B) Pi C) Ionic D) Metallic Answer: B) Pi
Number of sigma bonds in ethane (C₂H₆): A) 5 B) 6 C) 7 D) 8 Answer: C) 7
Hybridization in methane: A) sp B) sp² C) sp³ D) sp³d Answer: C) sp³
Shape of methane: A) Linear B) Trigonal planar C) Tetrahedral D) Bent Answer: C) Tetrahedral
Hybridization in ethene: A) sp B) sp² C) sp³ D) sp³d Answer: B) sp²
Shape of ethene molecule: A) Linear B) Trigonal planar C) Tetrahedral D) Octahedral Answer: B) Trigonal planar
Hybridization in acetylene: A) sp B) sp² C) sp³ D) sp³d Answer: A) sp
Shape of acetylene: A) Linear B) Bent C) Tetrahedral D) Trigonal Answer: A) Linear
Bond angle in methane: A) 90° B) 104.5° C) 109.5° D) 120° Answer: C) 109.5°
Bond angle in water: A) 180° B) 120° C) 104.5° D) 90° Answer: C) 104.5°
Lone pair repulsion is: A) Weakest B) Stronger than bond pair C) Equal to bond pair D) Negligible Answer: B) Stronger than bond pair
VSEPR theory predicts: A) Bond strength B) Molecular shape C) Atomic mass D) Reaction rate Answer: B) Molecular shape
Which molecule is linear? A) CO₂ B) H₂O C) NH₃ D) CH₄ Answer: A) CO₂
Which molecule is bent? A) CO₂ B) CH₄ C) H₂O D) BF₃ Answer: C) H₂O
Which molecule is trigonal pyramidal? A) NH₃ B) CO₂ C) CH₄ D) BF₃ Answer: A) NH₃
Which molecule has zero dipole moment? A) NH₃ B) H₂O C) CO₂ D) HCl Answer: C) CO₂
Dipole moment depends on: A) Mass B) Charge and distance C) Temperature D) Pressure Answer: B) Charge and distance
Which bond is most polar? A) H-H B) C-H C) H-Cl D) C-C Answer: C) H-Cl
Electronegativity increases across period: A) Left to right B) Right to left C) Top to bottom D) Bottom to top Answer: A) Left to right
Electronegativity decreases down group: A) True B) False C) Constant D) Random Answer: A) True
Which has highest electronegativity? A) Oxygen B) Nitrogen C) Fluorine D) Chlorine Answer: C) Fluorine
Which bond is purely covalent? A) NaCl B) H₂ C) HCl D) NH₃ Answer: B) H₂
Which compound shows hydrogen bonding? A) CH₄ B) HF C) CO₂ D) NaCl Answer: B) HF
Which intermolecular force is strongest? A) London forces B) Dipole-dipole C) Hydrogen bonding D) Van der Waals Answer: C) Hydrogen bonding
Which compound has metallic bonding? A) NaCl B) Fe C) H₂O D) CO₂ Answer: B) Fe
Metals are good conductors due to: A) Fixed electrons B) Free electrons C) Strong bonds D) Low density Answer: B) Free electrons
Which bond has highest melting point? A) Covalent B) Ionic C) Metallic D) Hydrogen Answer: B) Ionic
Covalent compounds are usually: A) High melting B) Low melting C) Conductors D) Ionic Answer: B) Low melting
Which compound is non-polar? A) NH₃ B) H₂O C) CO₂ D) HCl Answer: C) CO₂
Which type of bond is in diamond? A) Ionic B) Metallic C) Covalent D) Hydrogen Answer: C) Covalent
Graphite conducts electricity due to: A) Ionic bonding B) Free electrons C) Hydrogen bonds D) Weak forces Answer: B) Free electrons
Which molecule has resonance? A) CH₄ B) NH₃ C) CO₂ D) O₃ Answer: D) O₃ ✅ Done: MCQs 1–50
Which type of bonding exists in Na₂O? A) Covalent B) Ionic C) Metallic D) Hydrogen Answer: B) Ionic
Which compound has only single covalent bonds? A) C₂H₄ B) C₂H₂ C) CH₄ D) CO₂ Answer: C) CH₄
Bond order of O₂ molecule is: A) 1 B) 2 C) 3 D) 0 Answer: B) 2
Bond order of N₂ molecule is: A) 1 B) 2 C) 3 D) 4 Answer: C) 3
Which molecule has highest bond dissociation energy? A) O₂ B) N₂ C) F₂ D) Cl₂ Answer: B) N₂
Which bond is longest? A) Triple bond B) Double bond C) Single bond D) All equal Answer: C) Single bond
Which has shortest bond length? A) Single bond B) Double bond C) Triple bond D) Ionic bond Answer: C) Triple bond
Which compound shows partial ionic character? A) H₂ B) HCl C) CH₄ D) O₂ Answer: B) HCl
Which type of overlap forms sigma bond? A) Lateral B) Axial C) Diagonal D) Circular Answer: B) Axial
Which orbital overlap forms pi bond? A) s-s B) s-p C) p-p sideways D) s-d Answer: C) p-p sideways
Which molecule is non-linear? A) CO₂ B) H₂O C) BeCl₂ D) NO₂⁺ Answer: B) H₂O
Which molecule has sp³d hybridization? A) CH₄ B) NH₃ C) PCl₅ D) CO₂ Answer: C) PCl₅
Shape of PCl₅ is: A) Tetrahedral B) Trigonal bipyramidal C) Octahedral D) Linear Answer: B) Trigonal bipyramidal
Which molecule has sp³d² hybridization? A) SF₆ B) NH₃ C) CO₂ D) BF₃ Answer: A) SF₆
Shape of SF₆ is: A) Tetrahedral B) Octahedral C) Trigonal planar D) Linear Answer: B) Octahedral
Which molecule has lone pairs on central atom? A) CO₂ B) BF₃ C) NH₃ D) CH₄ Answer: C) NH₃
Which molecule is planar? A) CH₄ B) NH₃ C) BF₃ D) H₂O Answer: C) BF₃
Which theory explains hybridization? A) MOT B) VBT C) VSEPR D) Kinetic theory Answer: B) VBT
Which theory explains magnetic properties? A) VBT B) VSEPR C) MOT D) Orbital theory Answer: C) MOT
Oxygen molecule is: A) Diamagnetic B) Paramagnetic C) Non-magnetic D) Ferromagnetic Answer: B) Paramagnetic
Which molecule is diamagnetic? A) O₂ B) NO C) N₂ D) O₂⁻ Answer: C) N₂
Bond order of O₂⁻ is: A) 1.5 B) 2 C) 2.5 D) 3 Answer: A) 1.5
Bond order of O₂²⁻ is: A) 1 B) 2 C) 3 D) 0 Answer: A) 1
Which molecule has resonance? A) NH₃ B) CO₂ C) SO₂ D) CH₄ Answer: C) SO₂
Which structure contributes to resonance? A) Single structure B) Multiple structures C) Only ionic D) Only covalent Answer: B) Multiple structures
Which is an example of polar molecule? A) CO₂ B) CH₄ C) NH₃ D) BF₃ Answer: C) NH₃
Which factor affects bond polarity? A) Atomic mass B) Electronegativity difference C) Temperature D) Pressure Answer: B) Electronegativity difference
Which bond has maximum ionic character? A) H-F B) Na-Cl C) C-H D) O-H Answer: B) Na-Cl
Which element forms strongest hydrogen bonds? A) Carbon B) Fluorine C) Sulfur D) Phosphorus Answer: B) Fluorine
Hydrogen bonding increases: A) Boiling point B) Conductivity C) Density D) Pressure Answer: A) Boiling point
Which compound has intermolecular hydrogen bonding? A) Alcohol B) Ether C) Alkane D) Alkene Answer: A) Alcohol
Which intermolecular force is weakest? A) Hydrogen bond B) Dipole-dipole C) London dispersion D) Ionic Answer: C) London dispersion
Which property is affected by intermolecular forces? A) Melting point B) Atomic number C) Proton number D) Electron configuration Answer: A) Melting point
Which type of bonding exists in alloys? A) Ionic B) Covalent C) Metallic D) Hydrogen Answer: C) Metallic
Sea of electrons model explains: A) Ionic bonding B) Metallic bonding C) Covalent bonding D) Hydrogen bonding Answer: B) Metallic bonding
Which property is due to metallic bonding? A) Brittleness B) Conductivity C) Low density D) Non-reactivity Answer: B) Conductivity
Which bond is directional? A) Ionic B) Covalent C) Metallic D) Hydrogen Answer: B) Covalent
Which bond is non-directional? A) Covalent B) Ionic C) Coordinate D) Polar Answer: B) Ionic
Which compound has network covalent bonding? A) CO₂ B) Diamond C) NaCl D) NH₃ Answer: B) Diamond
Which allotrope conducts electricity? A) Diamond B) Graphite C) Fullerene D) Carbon black Answer: B) Graphite
Which molecule has expanded octet? A) NH₃ B) BF₃ C) PCl₅ D) CH₄ Answer: C) PCl₅
Which violates octet rule? A) CH₄ B) NH₃ C) BF₃ D) H₂O Answer: C) BF₃
Which species has odd number of electrons? A) NO B) CO₂ C) NH₃ D) CH₄ Answer: A) NO
Which compound is electron-deficient? A) NH₃ B) BF₃ C) CH₄ D) H₂O Answer: B) BF₃
Which molecule forms coordinate bond? A) NH₄⁺ B) CH₄ C) CO₂ D) O₂ Answer: A) NH₄⁺
Which orbital participates in sp³ hybridization? A) 1s + 3p B) 1s + 2p C) 1s + 3d D) 2s + 2p Answer: D) 2s + 2p
Which shape has 120° bond angle? A) Linear B) Trigonal planar C) Tetrahedral D) Bent Answer: B) Trigonal planar
Which molecule is symmetric? A) NH₃ B) H₂O C) CO₂ D) SO₂ Answer: C) CO₂
Which compound has highest polarity? A) CO₂ B) CH₄ C) H₂O D) BF₃ Answer: C) H₂O
Which concept explains molecular geometry best? A) MOT B) VBT C) VSEPR D) Quantum theory Answer: C) VSEPR