MCQs on Chemical Bonding and Molecular Structure
1. C-O bond length is minimum in
(a) CO2
(b) CO32-
(c) HCOO–
(d) CO
Answer:::: (d)
2. Molecules are held together in a crystal by
(a) hydrogen bond
(b) electrostatic attraction
(c) Van der Waal’s attraction
(d) dipole-dipole attraction
Answer:::: (c)
3. Sp3d2 hybridization is present in [Co(NH3)63+], find its geometry
(a) octahedral geometry
(b) square planar geometry
(c) tetragonal geometry
(d) tetrahedral geometry
Answer:::: (a)
4. Find the molecule with the maximum dipole moment
(a) CH4
(b) NH3
(c) CO2
(d) NF3
Answer:::: (b)
5. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°?
(a) four
(b) two
(c) three
(d) six
Answer:::: (c)
6. Find the pair with sp2 hybridisation of the central molecule
(a) NH3 and NO2–
(b) BF3 and NH2–
(c) BF3 and NO2–
(d) NH2– and H2O
Answer:::: (c)
7. The formal charge and P-O bond order in PO43- respectively are
(a) 0.6, -0.75
(b) -0.75, 1.25
(c) 1.0, -0.75
(d) 1.25, -3
Answer:::: (b)
8. Which of the molecules does not have a permanent dipole moment?
(a) SO3
(b) SO2
(c) H2S
(d) CS2
Answer:::: (d)
9. pℼ – dℼ bonding is present in which molecule
(a) SO32-
(b) CO32-
(c) NO3–
(d) BO33-
Answer:::: (a)
10. Which one has a pyramidal shape?
(a) SO3
(b) PCl3
(c) CO32-
(d) NO3–
Answer:::: (b)
