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2008
I. Select the correct answer given under each quests: IxI5
(/) Which has the maximum no. of unpaired electrons ?
U) Fe
ib) Mn
ic) Cr (tf) None.
(//) Ferrocyanide ion is
(a) Tetrahedral (&) Octahedral
Ic) Square planer id) None. iw) Which of thp fn . tetrahedral in shape ? W'ng COmP,exes () Ni(CO)4
(b) [Cu (NHj) ]2+
4
rAg(CN)2j-
id) None. iiv) Which of the fnii SidwicJcrsEANruIe?WmS Cmplexes viiates [Fe (CN)4]4' (*) [Fe(CN)tf]3-fCo(NH,) 13+
* 6
id J None.
<l/) Which is a hexadenlate liganri <a] E%lenediammine
ib) OxaJato
ic) EDTA
id) None. (y>) Which one is not a Lewis acid (*) NH3 () A1CI,
Ic) BF,
(d) SO}.
(a) Aqueous solution
ib) Ammonia
ic) Diethyl ether
id) None. |
''ssEsar
i&) Tertiary alcohol () Primary alcohol Secondary-a]cojj0j
None.
Die%JmaJonate M Ethy; aceioacetate <<*) None.
U> M}mr f*) Glucose
ib) Pructo.se
ic) Both
id) None.
According t0 principle
t*i &X-&p
(b) AJT av>> (c) AX-ATs: -t
4jt
frf) None.
Hermitian ChdmCSlS
(b) Lapiacian
(c> Etonian 0permor id) None.
hich is
ia) Linear
{h) Trjgonalplaner
(c) Both
{d) None. |
la) vei>/%h
(b) one
(c) very low
id) None.
ixv) The free energy and equilibrium constant are related as
ia) AG= rtirk
ib) RT~ - RT In K RT x 2-303
log A"
GROUPA {Inorganic)
2. ia) What are transitional elements? Why are they so called ? Why Zri, Cd and Hg are not treated as transitional elements ? 3 + 2 + 2
[ b) Write down the electronic configuration and no. of unpaired electrons in g
(/) Or
(H) Co
inf) Fe
(/V) Cu.
3. (a) Explain the shape, hybridisation and no. of unpaired electrons in the following complexes:
( [Fe(CN)]4-
(ii) Ni(CO)4
3x3
ib) Write down the most recent IUPAC nomenclature of
U) LiAlH4
Ui) K3[Fe(CN)6]
(/) [Ni(NH,) ]Q.
2x3
4. What are non-aqueous solvents'? Explain the following in Iiq. NH, solvent:
(a) Redox reaction
(b) Solvolytic reaction |
(c) Metal-ammonia reaction
id) Precipitation reaction.
GROUPB
(Organic)
5. What are organometallic compound? Give two examples. How does Ethyl magnesium iodide reacts with 2 + 1 + 3 x 4
(a) Water
ib) Formaldehyde
(c) Acetone
id) Ethyl acetate?
6. How is aldopentose converted into glucose and vice versa. Establish the open chain structure of D(+) glucose. 4 + 4 + 7
7. Write short notes on: 5x3 (y) Free radical polymerisation
(//) Polyester iiii) Polyurethane.
GROUPC [Physical]
8. (a) Explain the postulates of Bohrs model of
H-atom. 5
(6) Photoelectric effect.
(c) Heisenbergs uncertainty principle.
9. (a) What are laws of photochemistry. Define
quantum yield. Why are quantum yields high and low in some cases ? 6 + 2 + 2
(M What are the differences between the thermal and photochemical reactions ? 5
10. Write short notes on: 4+5 + 6 (/) Clausius - Mosotti equation
(ii) Dipolemoment
[iii) Paramagnetism, Diamagneiism and ferromagnetism. |
Vinoba Bhave University 2008 B.Sc Chemistry Part -2 - Question Paper