Chemistry 1st Year Chemical Bonding MCQs

This is the place to check Chemistry 1st Year Chemical Bonding MCQs with answers online. This chapter is about Chemical Bonding. The force which holds the atoms or ions together to form a large range of compound is called Chemical Bond. A bond is formed by parting of different atoms. These bonds have a different composition. They include Atomic Size, Ionic and Covalent Radii, Ionization energy and some others. These all have different variations in the periodic table which are different in groups and periods. There are three types of bonds i.e. Ionic, Covalent and Coordinate covalent bond. For Covalent bonds, there are different theories which are VSEPR, VBT theories. The Atomic Orbital Hybridization is the most prominent which explains the shapes of molecules.  MOT theory is also very crucial. For a bond, there are Bond Energies, Bond Length and Dipole Moment. So, this is a brief introduction about Chemical Bonding. Have a look at the important MCQs of this chapter.

Chemistry 1st Year Chemical Bonding MCQs

Chemistry 1st Year Chemical Bonding MCQs

KEY POINTS

  • Chemical Bond
  • Atomic Sizes
  • Ionization Energy, Electron Affinity and Electronegativity
  • Lewis Concept
  • Theories of Covalent Bond
  • Atomic Orbit Hybridization
  • Molecular Orbit Theory
  • Bond Energy, Bond length and Dipole Moment

 

Question#1. Oxy-acids of halogens has the co-ordinate covalent bond between:

  • Hydrogen and oxygen
  • Hydrogen and hydrogen
  • Halogens and oxygen
  • Oxygen and oxygen

Answer

Answer

Halogens and oxygen

Question#2. Which of the following has a perfect triangular structure:

  • CO2
  • NO
  • PH3
  • SO3

Answer

Answer

SO3

Question#3. Limitation of valance bond theory (VBT) is that:

  • It doesn’t address the shapes of the molecules
  • It doesn’t involve the criteria of bond formation
  • It doesn’t involve the concept of valency
  • None of the above

Answer

Answer

It doesn’t address the shapes of the molecules

Question#4. End to end overlapping of orbitals give rise to the formation of:

  • Sigma bond
  • Metallic bond
  • Pi bond
  • Coordinate covalent bond

Answer

Answer

Sigma bond

Question#5. Side by side overlapping of orbitals gives rise to the formation of:

  • Sigma bond
  • Metallic bond
  • Pi bond
  • Ionic bond

Answer

Answer

Pi bond

Question#6. In sp3 hybridized orbital, the s character is:

  • 25%
  • 75%
  • 50%
  • 100%

Answer

Answer

25%

Question#7. Dipole moment gives the information about:

  • % ionic character
  • The geometry of the molecules
  • Bond angles
  • All of the above

Answer

Answer

All of the above

Question#8. Bonding affects properties like:

  • Solubility
  • Reaction kinetics
  • Melting, boiling points, and isomerism
  • All of these

Answer

Answer

All of these

Question#9. In sp2 hybridized orbital, the s character is_______.

  • 11.11%
  • 33.33%
  • 22.22%
  • 44.44%

Answer

Answer

33.33%

Question#10. An ionic compound A+B is most likely to form when:

  • The ionization energy of A is high and electron affinity of B is low
  • The ionization energy of A is low and electron affinity of B is high
  • Both the ionization energy and the electron affinity of A and B are high
  • Both the ionization energy and the electron affinity of A and B are low

Answer

Answer

Ionization energy of A is low and electron affinity of B is high

Question#11. The bond order of nitrogen molecule and neon:

  • 2 and 1
  • 3 and 0
  • 0 and 3
  • 2 and 0

Answer

Answer

3 and 0

Question#12. Which of the following blocks will have comparatively higher electron affinity?

  • s block
  • f block
  • p block
  • d block

Answer

Answer

p block

Question#13. Which one of the following  has the maximum number of sp2 carbon atoms:

  • Benzene
  • Methane
  • CCl4
  • Ethene

Answer

Answer

Benzene

Question#14. The process in which the orbitals of different energies and shape mix with each other to give equivalent hybrid orbitals is called:

  • Dissolution
  • Hybridization
  • Resonance
  • Ionization

Answer

Answer

Hybridization

Question#15. The structure of water is:

  • Trigonal
  • Angular
  • Linear
  • Tetragonal

Answer

Answer

Angular

Question#16. In a crystal, cations and anions are held together by:

  • Sharing of electrons
  • Nuclear forces
  • Electrostatic forces
  • Electrons

Answer

Answer

Electrostatic forces

Question#17. Ionic compounds are obtained by the combination of groups

  • 3 and 5
  • 1 and 7
  • 2 and 5
  • 4 and 8

Answer

Answer

1 and 7

Question#18. In a double bond connecting 2 atoms, there is a sharing of

  • 1 electron
  • 2 electrons
  • 3 electrons
  • two-electron pairs

Answer

Answer

two-electron pairs

Question#19. F2 molecule is formed by the overlap of

  • s-s orbital
  • s-p orbital
  • p-p head-on overlapping of orbitals
  • p-p parallel overlapping of orbitals

Answer

Answer

p-p head-on overlapping of orbitals

Question#20. Which of the following compounds has a non-directional bond?

  • BF3
  • KBr
  • Mg CO3
  • NF3

Answer

Answer

KBr

Question#21. The structure of CrO-24 is:

  • Tetrahedral
  • Octahedral
  • Cubic
  • Triclinic

Answer

Answer

Tetrahedral

Question#22. Number of electrons shared in SF6 molecule is_______.

  • 4
  • 6
  • 8
  • 12

Answer

Answer

12

Question#23. The following molecules has a linear structure except?

  • CS2
  • SO2
  • CO2
  • BeCl2

Answer

Answer

SO2

Question#24. Which of the following species has lone pair of electrons on the central atom?

  • CH4
  • NH+4
  • PCl5
  • PCl3

Answer

Answer

PCl3

Question#25. The shape of H3O+ is:

  • Tetrahedral
  • Angular
  • Pyramidal
  • Trigonal planar

Answer

Answer

Pyramidal

Question#26. Which pair has trigonal planar geometry?

  • NH3, PH3
  • H2O, C2H2
  • BF3, AlH3
  • CO2, SO2

Answer

Answer

BF3, AlH3

Question#27. Which of the following statements is not correct?

  • The double bond is stronger than the single bond
  • σ bond is stronger than π bond
  • The triple bond is shorter than a double bond
  • σ bond is weaker than π bond

Answer

Answer

σ bond is weaker than π bond

Question#28. A molecule in which the distance between two carbon atom is largest is_________.

  • Ethane
  • Ethene
  • Ethyne
  • Benzene

Answer

Answer

Ethane

Question#29. All the metals shine when they are freshly cut. The reason is

  • The conductivity of the metal is increased
  • The process of cutting gives energy to the metal atoms
  • The electron becomes less delocalized according to valance bond theory
  • The electrons are excited at higher energy levels and emit the photons when they fall back

Answer

Answer

The electrons are excited at higher energy levels and emit the photons when they fall back

Question#30. Total number of valance electrons of a nitrogen atom in an ammonium ion is

  • 6
  • 10
  • 8
  • 16

Answer

Answer

8

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