0:-॥ (2)
Correct Answer:- Option-C
Question76:-Which of the following electrolyte have maximum Flocculation Value ?

മുട (4):

8:- 004) 300 (4)`
٢:۰۱۷5
D:-NaCl

Correct Answer:- Option-D
Question77:-The equilibrium constant of the following redox reactions at 298 K is *1xx10*(8)° ‘2Fe*(3+)* (aq) +
2I-(aq)= 2fe*(2)° +(aq) * `|_(2)` (6)
If the standard reduction potential of iodine becoming iodine is +.54V, what is the standard reduction potential of
“Fe*(3+) /Fe*(2+) ?

A:--1.006V

B:-+.77V

0 7۷

D:--.652V

Correct Answer:- Option-B
Question78:-A first order reaction is 50% complete in 69.3 minutes. Time required for 90% completion for this reaction is

A:-100 minutes

B:-230 minutes

C:-2303 minutes

D:-125 minutes

Correct Answer:- Option-B
Question79:-An organic compound with the molecular formula *C_(9)H_(10)°O forms 2, 4-DNP derivative, reduces Tollen's
reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-bezendicarboxylic acid. Identify the
compound.

A:-2-methyl Benzaldehyde

B:-3-ethyl Benzaldehyde

C:-2-ethyl Benzaldehyde

D:-4-ethyl Benzaldehyde

Correct Answer:- Option-C
Question80:-The reaction that involves the formation of both C-C and C-O bonds is

A:-Diels-Alder reaction

B:-Darzen's glycidic ester condensation

C:-Aldol reaction

D:-Beckmann rearrangement

Correct Answer:- Option-B
Question81:-Amongst the following which is not isolobal pairs ?

A:-Mn(CO)_(5)*, ` 011 (3)

8:-7९(0) (4), 0 `

©: ०(60) (3), ` ९ (2)

0:-`11೧(00)_(5)`, 85““

Correct Answer:- Option-C
Question82:-The ligand system present in Vitamin *B_(12)° is

A:-Porphyrin

B:-Corrin

C:-Phthalocyanine

D:-Crown ether

Correct Answer:- Option-B

Question83:-Match the metalloproteins in Column A with its biological and metal center in Column B.
Column A Column B

(a) Hemoglobin (i) Electron carrier and iron

(b) Cytochrome b (ii) Electron carrier and copper

(c) Vitamin ` 8 (12) (iii) ‘O_(2) transport and copper

(d) Hemocyanin (iv) Group transfer reactions and cobalt

(v) *O_(2)° storage and cobalt

(vi) *O_(2) * transport and iron

The correct match is

A:-(a)-(vi); (b)-(i); (c)-(iv) and (d)-(iii)
B:-(a)-(v); (b)-(i); (c)-(iv) and (d)-(iii)
C:-(a)-(iv); (b)-(v); (¢)-(i) and (d)-(ii)