91Ó°ÊÓ

The bond length between \(\mathrm{C}-\mathrm{C}\) bond in sp 3 hybridized molecule is: (a) \(1.2 \AA\) (b) \(1.39 \mathrm{~A}\) (c) \(1.33 \AA\) (d) \(1.54 \AA\)

Dipole moment is shown by: (a) 2 -methyl propane (b) Trans-2-butene (c) Cis-2-butene (d) Carbon tetrachloride

\(\mathrm{O}_{2}^{2+}\) has a bond order of: (a) 1 (b) 2 (c) 3 (d) 4

In 1,3 -butadiene, the carbon is hybridized as: (a) sp (b) sp \(^{2}\) (c) \(\mathrm{sp}^{3}\) (d) \(\mathrm{sp}^{2}\) and \(\mathrm{sp}^{3}\)

The most polar covalent species among the ones listed is: (a) \(\mathrm{C}-\mathrm{S}\) (b) \(\mathrm{C}-\mathrm{O}\) (c) \(\mathrm{C}-\mathrm{F}\) (d) \(\mathrm{C}-\mathrm{Br}\)

Hybridization of 1 and 2 carbon atom in \({ }^{1} \mathrm{CH}_{2}={ }^{2} \mathrm{C}=\mathrm{CH}_{2}\) are: (a) sp, sp (b) \(\mathrm{sp}^{2}, \mathrm{sp}^{2}\) (c) \(\mathrm{sp}^{2}\), sp (d) \(\mathrm{sp}^{3}, \mathrm{sp}^{2}\)

The halide having the highest melting point is: (a) \(\mathrm{NaF}\) (b) \(\mathrm{NaCl}\) (c) \(\mathrm{NaBr}\) (d) \(\mathrm{NaI}\)

Born-Haber cycle is used to determine: (a) Electron affinity (b) Lattice energy (c) Crystal energy (d) All the above

The number of s and \(\pi\) -bonds present in pent-1-ene-4yne is: (a) 3,10 (b) 9,4 (c) 4,9 (d) 10,3

The ion which is not tetrahedral in shape is: (a) \(\mathrm{BF}_{4}\) (b) \(\mathrm{NH}_{4}^{+}\) (c) \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2}\) (d) \(\mathrm{NiCl}_{4}^{2-}\)