60.

61.

62.

63.

64.

65.

Consider the following statements with respect to hydrogen bonding :

(i) High degree of directionality.

(ii) special kind of dipole-dipole interaction.

(iii) HF ion is linear with the hydrogen atom between the two fluorine atoms

[F--H--F] involving strong hydrogen bond.
The correct statements are

(A) Only (i & iii) (B) Only G& ii)

(C) Only (ii & iii) (0) Allof the above (i, ii & iii)
Identify a complex, which does not obey 18-electron rule.

(A) ഥം ൫ ചം (C) പം ௫) ചം

Match the items in List I (organometallic complex) with their most appropriate structure
in List IT:

List I List IT
0 [வூடு (m) |Open-faced sandwiches

(11) ഷ്ഠ state of CpIn (೧) [Tilted rings

111) [8010 state of CpIn (0) | Polymer

(iv) |Cp,ReH (0) | Triple deckers

(^^) i-p; ii-m; 111-0; iv-n (8) i-n; ii-p; 111-0; iv-m
(6) 1-0 1-1; iii-p; iv-o (D) 1-0; ii-n; 1-0; iv-m.

Zeise’s salt, [Pt(CH,)Cl,]" has shown that the ethylene occupies the fourth co-ordination

site of the square planar complex. Identify the correct representation of ர co-ordination
of an ethylene ligand with platinum metal.

H ப
‏لام‎ 2
He aH 7۸ 3 ಛ್‌
{|
Of © AQ ol 0०) ಗ್‌
வே பச்‌ ‏ہت‎ SH இப்‌
H H H H H H
Match the items in List I (name of process) with their most appropriate catalyst (List Il):
List I List II
(i) | Wilkinson catalyst (ष) | [र1((0)70] `
൫ |Oxo process യ |740[]2-
൩) |Monsanto acetic acid process (0) |Co,(CO),
(11) |Wacker process ൩ |[(Ph3P);RhCl]
(A) 1-0; ii-n; 1-0; iv-m. (8) 1-७ ii-n; 11-0; एन
(6) 1-0 1-1; iii-p; iv-o (2) 1-0; 1-0; 11-17; iv-n

Which characterization technique would useful to confirm hydride functionality in
H,Fe(CO), ?
(^^) Mass spectrometry (B) Infra-red
(C) 'HNMR (D) Méssbauer
⊽⊔⊽ 11 020/2021
[P.T.O.]