Chemical Bonding MCQs for MDCAT Practice

Chemistry section, Chemical Bonding chapter. Sample questions from past PMC papers.

1. Question 1
   In the following molecules, which one has the shortest C-C bond length?
   • A.C3H8
   • B.C2H8
   • C.C2H4
   • D.C2H2
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2. Question 2
   Which of the following compounds shows shortest C-H bond length?
   • A.Methane
   • B.Acetylene
   • C.Ethylene
   • D.Ethane
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3. Question 3
   A bond is said to be ionic when the electronegativity difference between the bonded atoms is
   • A.equal to 1.0
   • B.equal to zero
   • C.less than 0.7
   • D.greater than 0.7
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4. Question 4
   Which one of the following molecules has zero dipole moment.
   • A.NH3
   • B.NF3
   • C.BF3
   • D.H2O
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5. Question 5
   For sp3d2 hybridization, the expected geometry will be?
   • A.Tetrahedral
   • B.Square planar
   • C.Trigonal
   • D.Octahedral
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6. Question 6
   What is the hybridization of the carbon atoms in a molecule of ethyne, represented by H-C≡C-H?
   • A.sp2
   • B.sp3
   • C.dsp2
   • D.sp
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7. Question 7
   The Tetra-valency of carbon is best explained by the concept of:
   • A.Resonance
   • B.Hybridization
   • C.Electron delocalization
   • D.VSEPR rule
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8. Question 8
   Which one of the following molecules has the shortest distance of carbon atoms?
   • A.CH3 - CH3
   • B.CH2 = CH2
   • C.CH ≡ CH
   • D.CH3 - CH2 - CH3
   • E.CH_2_ = CH_2 - CH_3_
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