CH-01
June - Examination 2018 B.Sc. Pt. I Examination
Inorganic Chemistry Paper - CH-01
Time : 3 Hours ] [ Max. Marks :- 50
Note: The question paper is divided into three sections A, B and C.
Write answers as per the given instructions.
{ZX}e : ¶h àíZ nÌ "A', "~' Am¡a "g' VrZ IÊS>m| ‘| {d^m{OV h¡& à˶oH$
IÊS> Ho$ {ZX}emZwgma àíZm| Ho$ CÎma Xr{OE&
Section - A 10
×
1 = 10 (Very Short Answer Questions)Note: Answer all questions. As per the nature of the question delimit your answer in one word, one sentence or maximum up to 30 words. Each question carries 1 mark.
IÊS> - "A' (A{V bKw CÎmar¶ àíZ)
{ZX}e : g^r àíZm| Ho$ CÎma Xr{OE& Amn AnZo CÎma H$mo àíZmZwgma EH$ eãX, EH$ dm³¶ ¶m A{YH$V‘ 30 eãXm| ‘| n[agr{‘V H$s{OE& à˶oH$ àíZ 1 A§H$ H$m h¡&
1) (i) What type of hydrogen bond is formed by salicylic acid.
Give structure?
g¡{b{g{bH$ Aåb Ûmam {H$g àH$ma H$m hmBS´>moOZ ~§Y ~Zm¶m OmVm h¡? g§aMZm Xr{OE&
467
CH-01 / 1700 / 4 (1) (P.T.O.)
467
CH-01 / 1700 / 4 (2) (Contd.)
(ii) PCl5 exists while NCl5 does not exist. Explain, why?
PCl5
~ZVm h¡ naÝVw
NCl5Zhr§ ~ZVm& g‘PmBE, ³¶m|?
(iii) What is the geometry of SF6 molecule?
SF6
AUw H$s Á¶m{‘{V ³¶m h¢?
(iv) Calculate the bond order of He2+ molecule?
He2+
AUw Ho$ ~§Y H«$‘ H$s JUZm H$s{OE&
(v) The dipolemoment of NH3 is much more than that of NF3. Explain.
NH3
H$m {ÛY«wd AmKyU©,
NF3go H$B© A{YH$ hmoVm h¢& g‘PmBE?
(vi) Which elements show diagonal relationship?
{dH$U© - g§~§Y {H$Z - {H$Z VËdm| Ho$ ‘ܶ nm¶m OmVm h¢?
(vii) Write the electronic configuration of Ar?
Ar
H$m Bbo³Q´>m°{ZH$ {dݶmg {b{IE&
(viii) Draw the structure of P4O6? P4O6
H$s g§aMZm ~ZmBE&
(ix) Write the hybridisation and shape of XeF2 molecule.
XeF2
AUw H$m g§H$aU d AmH¥${V {b{IE&
(x) What are Polyhalides?
nmbrh¡bmBS> ³¶m h¢?
Section - B 4
×
5 = 20 (Short Answer Questions)Note: Answer any four questions. Each answer should not exceed 200 words. Each question carries 5 marks.
CH-01 / 1700 / 4 (3) (P.T.O.) 467
IÊS> - ~ (bKw CÎmar¶ àíZ)
{ZX}e : {H$Ýht Mma àíZm| Ho$ CÎma Xr{OE& Amn AnZo CÎma H$mo A{YH$V‘
200 eãXm| ‘| n[agr{‘V H$s{OE& à˶oH$ àíZ 5 A§H$m| H$m h¡&
2) Write differences between bonding and antibonding molecular orbitals?
~ÝYr d {dnarV ~ÝYr AmpÊdH$ H$jH$m| ‘| AÝVa {b{IE&
3) Write short notes on:
g§{jßV {Q>ßnUr {b{IE&
(i) Schottky defect /
em°Q²>H$s Ìw{Q>¶m±
(ii) Frenkel defect /
’«o$ÝHo$b Ìw{Q>¶m±
4) What are the evidences for Vander Waal forces?
dmÝS>a dmb ~bm| Ho$ nj ‘| ³¶m à‘mU h¢?
5) Write importance of Ca and Mg in biological process.
Mg
d
CaH$m O¡{dH$ à{H«$¶mAm| ‘| ‘hËd {b{IE&
6) How is borazine prepared? Discuss its properties and structure?
~moamoOrZ H$mo H¡$go àmßV H$a|Jo? BgH$s JwUmo§ d g§aMZm H$s {ddoMZm H$s{OE&
7) What are polycentric orbitals? Describe 3c-Ze bond in diborane?
~hþHo$pÝÐV H$jH$ ³¶m h¢? S>mB~moaoZ ‘|
3c-Ze~ÝY H$s ì¶m»¶m H$s{OE&
8) Give two methods of preparation of Xe OF4. Explain its chemical properties and describe its structure.
Xe OF4
Ho$ {daMZ H$s Xmo {d{Y¶m± Xr{O¶| BgHo$ amgm¶{ZH$ JwUm| H$mo
g‘PmVo hþE BgH$s g§aMZm H$s ì¶m»¶m H$s{O¶o&
467
CH-01 / 1700 / 4 (4)
9) What are fluorocarbons? How are they prepared ? Write their uses.
âbwAmoamo H$m~©Z ³¶m h¢? ¶o H¡$go ~Zm¶o OmVo h¢? BgHo$ Cn¶moJm| H$mo {b{IE&
Section - C 2
×
10 = 20 (Long Answer Questions)Note: Answer any two questions. You have to delimit your each answer maximum up to 500 words. Each question carries 10 marks.
IÊS> - g (XrK© CÎmar¶ àíZ)
{ZX}e : {H$Ýht Xmo àíZm| Ho$ CÎma Xr{OE& Amn AnZo CÎma H$mo A{YH$V‘ 500 eãXm| ‘| n[agr{‘V H$s{OE& à˶oH$ àíZ 10 A§H$m| H$m h¡&
10) Discuss Fajan's rule giving suitable examples.
’$m¶mÝg {Z¶‘m| H$s C{MV CXmhaUm| g{hV {ddoMZm H$s{OE&
11) Discuss conductivity of metals on the basis of molecular orbital theory (band theory)
AUw H$jH$ {gÕmÝV (~¡ÊS> {gÕmÝV) Ho$ AmYma na YmVwAm| H$s MmbH$Vm H$s ì¶m»¶m H$s{OE&
12) Write short notes on the following:
{ZåZ na g§{jßV {Q>ßnUr {b{IE…
(i) Inert pair effect /
A{H«$¶ ¶w½‘ à^md
(ii) Tetrasulphur tetranitride /
Q>oQ´>mgë’$a Q>oQ´>mZmBQ´>mBS>
13) What is radius ratio? Derive the radius ratio for cubic structure of an ionic compound.
