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Solved Practice Questions on Molecular orbital Theory Questions with Solutions | Inorganic Chemistry PDF Download

Q.1. The oxygen molecule is paramagnetic. It can be explained by
(a) Resonance
(b) Hybridisation
(c) Valence bond theory
(d) Molecular orbital theory

Correct Answer is Option (d)


Q.2. Find the diamagnetic species
(a) H2
(b) H2
(c) He2+
(d) H2
+

Correct Answer is Option (a)


Q.3. Each P of P4O10 is attached to how many oxygen atoms?
(a) 3
(b) 2.5
(c) 2
(d) 4

Correct Answer is Option (d)


Q.4. O-O bond length is minimum in
(a) O2
(b) O2
(c) O2+
(d) O22-

Correct Answer is Option (c)


Q.5. Find the molecule having the highest bond order
(a) O2+
(b) O2
(c) O22-
(d) O2

Correct Answer is Option (a)


Q.6. Which among the following has the shortest C-C bond length?
(a) Ethene
(b) Ethane
(c) Benzene
(d) Ethyne

Correct Answer is Option (d)


Q.7. Find the paramagnetic species
(a) CN
(b) NO+
(c) CO
(d) O2

Correct Answer is Option (d)


Q.8. Which of the following pairs has the same bond order?
(a) O2+, NO+
(b) N2, O2
(c) O22-, B2
(d) NO, CO

Correct Answer is Option (c)


Q.9. When O2 changes to O2, the electron goes to which of the orbitals?
(a) 𝜋 orbital
(b) 𝜎 orbital
(c) 𝜋* orbital
(d) 𝜎* orbital

Correct Answer is Option (c)


Q.10. Which of the following is not paramagnetic?
(a) CO
(b) N2+
(c) NO
(d) O2

Correct Answer is Option (a)

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