Question 1. A co-ordinate bond is formed by:
- (a)sharing of electrons contributed by both the atoms
- (b)complete transfer of electrons
- (c)sharing of electrons contributed by one atom only
- (d) none of these
Answer: 1. (c) sharing of electrons contributed by one atom only
Question 2. The species CO, CN–and N2are:
- (a) isoelectronic
- (b) having coordinated bond
- (c)having polar bond
- (d) having low bond energies
Answer: 2. (a) isoelectronic
Question 3. The axial overlap between the two orbitals leads to the formation of a:
- (a) sigma bond
- (b) pi bond
- (c) multiple bond
- (d) none of these
Answer: 3. (a) sigma bond
Question 4. In S02 molecule, S atom is:
- (a)sp3 hybridized
- (b) sp hybridized
- (c) sp2 hybridized
- (d) d sp2 hybridized
Answer: 4. (c) sp2 hybridized
Question 5. A molecule or ion is stable if:
- (a) Nb = Na
- (b) Nb < Na
- (c) Na < Nb
- (d) Na – Nb = + ve
Answer: 5. (c) Na < Nb
Question 6. The molecule Ne2 does not exist because
- (a) Nb > Na
- (b) Nb = Na +
- (c) Nb < Na
- (d) None of these
Answer: 6. (b) Nb = Na +
Question 7. Which one is diamagnetic among NO+, NO and NO ?
- (a)NO+
- (b) NO
- (c) NO–
- (d) None of these
Answer: 7. (a) NO+
Question 8. In sp3, sp2 and sp hybridized carbon atom, the p character is maximum in:
- (a) sp3
- (b) sp2
- (c) sp
- (d) all of the above have same p-character
Answer: 8. (a) sp3
Question 9. Out of the following, intramolecular hydrogen bonding exists in:
- (a) water
- (b)H2S
- (c) 4-nitrophenol
- (d) 2-nitrophenol
Answer: 9. (d) 2-nitrophenol