BOND LENGTH, BOND ENERGY, COVALENT MOLECULAR SHAPE, POLARITY & INTERMOLECULAR FORCES
Covalent Bonds and Molecular Shapes Quiz
Test your knowledge on key concepts related to bond length, bond energy, molecular shape, polarity, and intermolecular forces. This quiz features challenging multiple-choice questions designed to assess your understanding of these essential topics in chemistry.
Whether you're a student looking to reinforce your learning or just a chemistry enthusiast wanting to validate your expertise, this quiz is perfect for you.
- Explore different molecular shapes and bond types
- Understand the significance of electronegativity
- Learn about intermolecular forces and their effects on physical properties
1. The bond length in C-O is 0.143, whereas in C=O, the bond length
A. increases
B. decreases
C. Remains the same
D. May increase or decrease
2. The bond angle between the hydrogen atoms in water molecule is _________
A) 104.5°
B) 104°
C) 105.4°
D) 105°
3. The bond enthalpy of H2O and OH are 502 KJ mol-1 and 427 KKJ mol-1. Then what is the average bond enthalpy?
A) 502 KJ mol-1
B) 464.5 KJ mol-1
C) 427 KJ mol-1
D) 75 KJ mol-1
4. Resonance does stabilize the molecule.
A. False
B. True
C. Depends on temperature
D. None of the above
6. Which of the following is correct regarding repulsive interaction?
A) Lone pair-Lone pair is greater than Lone pair-Bond pair is greater than Bond pair-Bond pair
B) Lone pair-Lone pair is less than Lone pair-Bond pair is less than Bond pair-Bond pair
C) Lone pair-Bond pair is greater than Lone pair-Lone pair is greater than Bond pair-Bond pair
D) Lone pair-Lone pair is greater than Lone pair-Bond pair is less than Bond pair-Bond pair
7. The shape of the molecule depends on the _______
A) adjacent atom
B) valence electrons
c) surroundings
D) atmosphere
8. What is the shape of the molecule NH3?
A) Square pyramidal
B) V-shape
C) Triagonal pyramidal
D) Tetrahedral
9. What is the name of the above-given shape?
A) Triagonal planar
B) Tetrahedral
C) Square planar
D) Octahedral
11. What doesn't affect bond length?
A. Size of atoms
B. Bond multiplicity
C. Difference in substances
D. temperature
12. The one pair of bonded electrons moves back and forth between the three atoms of Ozone resulting in a mixed structure between two structures. This phenomenon is called:
A. Resonance
B. Delocalization
C. Molecularity
D. Orbitalization
13. The reaction energy change is calculated from the sum of Energy in and Energy out. It is negative for :
A. Endothermic reaction
B. Exothermic reaction
C. Hexothermic reaction
D. Moleculothermic reaciton
14. If the electronegativity difference between two atoms covalently bonded is 0.2, what is its bond type?
A. Nonpolar covalent
B. Polar covalent
C. ionic
D. metallic
15. Methane is a ......................................molecule.
A. polar
B. non-polar
C. ionic
D. metallic
16. Intermolecular forces controls ..............................properties of substances.
A. physical
B. chemical
C. intermolecular
D. covalent
17. Stronger intermolecular forces will suggests higher ...............................
A. Melting point
B. Boiling point
C. Both a. And b.
D. None of above
18. Which belong to intermolecular forces:
A. London disperson forces
B. Dipole-dipole interactions
C. Hydrogen bonding
D. All of above.
19. Instantaneous dipole is generated due to:
A. Metallic bond
B. Covalent bond
C. Constant motion of electrons
D. Valence electrons in a bond
20. Very polarizable molecules will have higher......................
A. Dispersion forces
B. Attraction forces
C. Hydrogen bonding
D. Bond energy
21. Surface area of a molecule affects :
A. Disperson forces
B. Hydrogen bonding
C. Dipole - Dipole interation
D. Covalent bonding
22. Hydrogen bonding arises due to dipole-dipole interations between molecules with :
A. F-H, O-H and N-H
B. G-H, O-F, X-T
B. H-H, O-O, Fe-O
D. N-F, O-F, T-F
23. The covalent bond is stronger than Hydrogen bonding about
A. Thirty times
B. Sixty times
C. Twenty times
D. Seventy times
24. The example of compound having hydrogen bonding is
A. Chlorine gas
B. Neon
C. Sodium chloride
D. Water
25. The force of attraction which is stronger than dipole-dipole forces is :
A. Londong dispersiopn forces
B. Hydrogen bonding
C. Vander waal forces
D. Intermolecular forces
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