In O₂ and H₂O₂ , the O-O bond lengths are 1.21 and 1.48 Å respectively. In ozone, the average O-O bond length is

• 1.28 Å

• 1.18 Å

• 1.44 Å

• 1.52 Å

Among [Fe(H₂O)₆]⁺, [Fe(CN)₆]^3-, [Fe(Cl)₆]^3- species, the hybridisation state of the Fe atom are, respectively.

• d²sp³, d²sp³, sp³d²

• sp³d²,d²sp³, d²sp³

• sp³d², d²sp³,sp³d²

• None of the above

Among the following, the molecule that will have the highest dipole movement is

• H₂

• HF

• HBr

• HCl

Which of the following pair have identical bond order?

• CN^- and NO⁺

• CN^- and O${}_2^{-}$

• CN^- and CN⁺

• NO⁺ and O${}_2^{-}$

Identify the T-shaped molecule from the following.

• BF₃

• NH₃

• NF₃

• CIF₃

Which one of the following statements is correct?

• Ferromagnetic substance like ZnFe₂O₄ becomes paramagnetic on heating

• NaCl is a paramagentic salt

• CuSO₄ is a diamagnetic salt

• MnO is an example of antiferronmagnetic substance

Among the following, the molecule of highest dipole moment is

• CCl₄

• NH₃

• H₂O

• CHCl₃

The bonds present in the structure of dichromate ion are

• four equivalent Cr-O bonds only

• six equivalent Cr-O bonds and one Cr - O - O bond

• six equivalent Cr-O bonds and one O-O bond

• eight equivalent Cr-O bonds

9.

The stablest radical among the following is

• C₆H₅ - CH₂ - $\stackrel{.}{\mathrm{C}}$H₂

• CH₃$\stackrel{.}{\mathrm{C}}$H₂

• C₆H₅ - $\stackrel{.}{\mathrm{C}}$H₂-CH₃

• CH₃-$\stackrel{.}{\mathrm{C}}$H-CH₃

Match List-I and List-II and choose the correct matching codes.

List - I	List - II
A. [Ni(CN)4]2-	1. Ti4+
B. CHlorophyll	2. sp3; paramagentic
C. Ziegler- Natta catalyst	3. non-planar
D. [NiCl4]2-	4. Mg2+
E. Deoxyhaemoglobin	5. Planar 6. dsp2; diamagentic

• A - 6; B - 4; C - 1; D - 2; E - 3

• A - 2; B - 4; C - 1; D - 6; E - 3

• A - 2; B - 4; C - 1; D - 6; E - 5

• A - 6; B - 4; C - 1; D - 2; E - 5