KUET 2022 Question Paper M.Sc. Chemistry

FOR KUET EXAM PREPARATION

KUET 2022
Question Paper · M.Sc.
Chemistry
EXAM YEAR TYPE SUBJECT

KUET 2022 Question Paper M.Sc. Chemistry

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sr. No. .........520.........

ENTRANCE TEST!2022
SCHOOL OF' PHYSICAL & MATHEMATICAL SCIENCES
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CHEMISTRY
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Question Booklet Serles I Ll

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Total Questions i 60 I

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TimeAllowed i
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70 Minutes Roll No. :

a g Instructions for Candidates :
l. writeJour EntranceTest Roll Number in the provided
space at rhe top ofthis page ofeuestion Booklet
and fill up the necessary information in the spices provided on the O'MR Ansier She;t.

2. OVR Answer Sheer has.an Original Copy and a Candidale's Copy glued beneath ital thetop. While
maxlng enrrres ln the ungrnal ( opy, candidate should ensure thar lhe t$o cooies are alisned orooerh
so that the enrries made in lhe original copy against each item are exacrry cbpied in rhi ciaiciate
UoDv.
!

m
:. e u entries in ttre oMR Answer sheet, including answers to questions, axe to be recorded in the original
Copy only.
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. question among the options A, C and D and
4.
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eeflectTheshallircomplete
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Choose the correcr /,mosr appropriate response for each B,

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reaoby lne UMK scanner no complaint

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and thisto entenained.
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5 Use only blue/black point pen darken
barl to the appropriate response. [n no case
gel/inl pen or pencil should be used.
6 Do not darken more than one circle ofoptions for any question. A question with more than one darkened
response shall be considered wrong.
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or u.z) marKs trom the lotal score ot lhe ca[didate.
8 or yrhose candidates who would obtain positive score in Entrance Test Examination shall be eligibre
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foradmission.

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9. Do not make any stray mark on the OMR sheet.

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el.mRough work, ifany, should done on blank provided with the gquestion
l a booklet.
10. Calculators and mobiles shall notbe permitted inside the examination

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hall.

gla 12 oMRAnswer sheet must handled carefiilly it should not foldeda or mutilated in which
I be the sheets

a wlll not evaluated
oe
be and be case it

13 Ensur€ that your oMR Answer sheet has been signed by the Invig ator and the
candidate himsciiT
herself.
14 At the end ofthe-examination, hand over the,pMR Answir Sheet to rhe invigilator
who will first tear olr
the original oMR sheet in presence of the can'didate a.nd hand over rhe
candiEate's copy to th"
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Page 1 of 10

l. Which of the following statement is/are false 5. After two half lives, the concentration of reaclan
about the conection terms in van der Waals is reduced to in case of zero orde
equations ? reachon.

(A) The coefficient "a" accounts for the mutual (A) 0%
attraction between the molecules. (B) 2s%
(B) The term a,/v'increases the pressure of real (c) so%
gas relative to ideal gas.
(D) 7 5o/o
(C) The coefficient "b" represents the volume The rate of formation of NO in the reaclio
that is compressible.
4NH3(g) + so,(e) + 4No(g) + H,o(g) i
(D) Both (B) and (C) 5.90 x l0 3 moll-rs-'. The rate ofdisappearanc
of oxygen would be :
2. The fraction of total gas molecules which has
acquired most probable velocity will (A) 4.72 x l0 3 moll- Is '
with the decrease in tempemture. (B) 7.38 x 10r moll-rs-'
(A) increase (C) 3.39 x loj moll-'s'
(B) decrease (D) 5.90 x 10-r mollrs I
(C) remains constant '1. For the T -+ co, what will be the valuc of A
(D) can't say without knowing pressure the rate constant, k = 3.2 x l0r mofrL s' an
E" = 1.0 x 10, kJ mol' ?
3. For a cubic crystal, the Miller indices of the
plane for which interplanar spacing is a/{3 would
(A) A = 1.0 x 10'? kJ mol '
be: (B) A = 3.2 x 10r mol-rL sj
(A) l l1 (C) A=1.2 x l03mol 'Ls'
(B) 100 (D) A = 3.2 x 103 kJ mol' s-'
(c) 200 8. Ifthe intensity of incident beain of monochromat
radiation having intensity I" is reduced to ha
(D) 110 when passed through a solution ofconcentrati(
4. Which ofthe following liquid crystalline phases c and thickness l, then what would be intensi
has only orientational order and no positional oftransmitted radiation if thickness of the solulic
order ? is kept the same and concentration tripled ?
(A) Smectic liquid crystal ' (A) I"
(B) Cholesteric liquid crystal (B) 1/2 r.
(C) Nematic liquid crystal (c) l/4 r.
(D) Non€ of these ,. (D) 1/8 r"

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9. Which of the following statement is/are 12, If one mole of ethane is burnt in excess of O,
CORRECT ? at constant pressure and 500K, 1560 kJ of hcat
l. Third law of thermodynamics allows us to is liberaled. What is the change in intemal energy
calculate absolute entropy of a substance. for the reaction
2. Temperature dependence of enthalpy of a
m
crH6G) + 3.5 or(g) -+ 2 Cor(e) + 3 H,o(g)

m monoxide is . co
reaction is given by Arhenius equation.

o
(A) -1562.08 kJ
.c
3. Residual entropy of carbon
e m
e m
(B) +1562.08 kJ
l a s
s
nol zeio

l a a g
(B) I and ag
(A) I and 2 (c) -518.5 kJ
3 (D) -1s57.9 kJ
(C) 2 and 3 t3. If the dissociation constant of weak acid, HA,
(D) l, 2 and 3 is ( of 1.00 x l0{, then the percentage acid
dissociated at equilibrium will be closed to
10. The Clasius-Clapeyron equation is not applicable
to which of the following processes ? if0.l00 mol ofthis acid is dissolved in

m
100 mL of water

c. o
(A) Sublimation of ice in freezer
(A) 99.0%

(C) Evaporation ofmercury liquid fiom broken sem(B) 1.00%
(B) Condensation of sleam into water

g la (c) 99.9%
a

a
thermometer

(D) Conversion of O, (g) into 03 (g)
(D) 0.10%
ll. The following processes are used for cooling :
14. Dudng the conductometric titration of an acid
1. Adiabetic expansion (placed in beaker) by an alkali (taken in buaette),
2. Adiabeticdemagnetization the plot between the conductance and volumc of
alkali added was found to initially decrease
m
3. Joule-Thomsoneffect
m c. o
slightly and then slowly increase followed by a

c. o
4. Evaporation
m
sharp increase. Which of the following

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The conect sequence ofthese proc€sses to Foduce combinations would give such a plot ?

s
la (A) r, 4,2,
lower and lower temperature is :

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g
(A) Strong acid and strong base
a
3
(B) Weak acid and strong base
(B) 1, 4, 3, 2
(c) 4, r,2,3 (C) Strong acid and weak base

(D) 4, r, 3,2 (D) Weak acid and weak base

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w
18' For a particle in a one-dimensional box
15. Molar conductance at infinite dilution for a pot€ntial V" inside the box and infinite out
I and for CB is
compoundAB is 145 0 Scm'?mol ratio of the energy difference bctt
the
110.1 Scm'1mol-r' Limitilg molar conductance n = I and n = 2 states to that of between I
forA* is 73.5 Scm'?mol-r' What is limiting molar andn=3statesrs:
conductance for C* ion ? (A) 4:9

(A) 326.6 Scm'?mol ' (B) 3:5
'(c; t:t
(B) 38.6 Scm'?mol-'
(D) 1:4
(C) 181.6 Scmzmolt
,n. The number of vibrational degrees of fre
(D) 90.8 Scm'?mol ' for SO, molecule would be :

16, For a cell reaction involving two electrons change' (A) 2
the standard e.m f. of the cell is found to
be
(B) 3
0.295 V at 25"C. The equilibdum aonstant
of
(c) 4
the reaction would be (diven F = 96500 C (D) 5
molr; R = 8.314 JKrmol-')
ZO. The rotational spectrum of a rigid diatomic,
(A) 10 x 101 clnsists of equally spaced lines with s
equal to :
(B) 1.0 x 10'o
(A) B
(c) 2.0 x 10r'
(B) B/2
(D) 4.0 x lo''z (c) 28
17. Which ofthe following quanturn nurnbers specifies (D) 68
the z-component of angular momentum of an
21. The number of lone pairs are identica
electron in an atom ? pair :

(A) PrinciPal quantum numb€r (n) (A) XeFa, CIF3

(B) Azimuthal quantud number (l) (B) XeOa, ClF3
(C) XeOrF, ICI;
(C) Magnetic quantum number (m)
(D) XeOn, ClF.
(D) Both (B) and (C)

4
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22. An orbital with same number of angular and 26. The BBB multicentre bond is seen in highcr
radial nodes is: boranes. Identify number of such BBB bonds in
B5H, borane molecule. (st)t( of BrH,
: 4120)
(A) 4p
(B) 5d (A) I

m
co
(c) 4f (B) 2
(D) 3d
.om
c (c)
e m .
s
3

e m l a
molecular orbitals formed from combination of g
Switching the internuclear axis from Z to X, the

a
(D)
a
px orbital's gofl two atoms in a homo diatomic 27. What is correct for the carborane CrBr0Hr,
4

a
?

molecule will have a change from :
(A) It has a nido tYPe shucture
(A) Having one node to no node along the
x axls (B) It has 12 electron pairs for skeletal structurc
(B) Having no node to one node along the (C) It has an arachno type structure
x axis

m closo stuctures
(D) It has {n+l ) skele(al pairs with thee isomcric
(C) will keep its node
. c o
(D) A low energy M.O. to high energy M.O. m
s e
a
NMR spectra ofClF3 molecule depicts
reF

l
28. The :

ag
)r
rg
24. Identifu the molecule whose bond length deq€ases (A) T evidenced from Doublet liiplct and
shape
on adding an extra electron

(A) o. (B) T shape evidenced from Singlet

(B) N, (C) T shape evidenced from Doublet and Singlet

(C) B' (D) Sp3d hyb dization from Singlet

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(D) Li, 29. The inner transition elements differ to transition

co
om compounds can be . especially higher
elements in :

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25. The correct order of lewis acidity in case of
c.xenon
he

s e
em (A) > XeOFn> XeFn
(A) Coordination chemistry
coordination anumbers
l
:

las agtransitions and factors alibcting
g
XeF6

a
(B) Electronic
(B) XeOF,, > XeFo > XeFu these excitations

(C) XeFa > XeOFn > XeFu (C) Magnetic p(operties especially couplings

(D) XeFn > XeFu > XeOF,, (D) All of these
.t
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30 Which ofthe following lanthanide (IIl) ions has 34' The corect order of At for the tetrahedrai cobalt(
highest observed magnetic moment ? complexes is l

(A) Nd{4f3} (A) lcocl{]'1> lcoBra]'1 > [Co(NCS),]r
(B) cd{4e} (B) tCo(NCS)l12 > 1CoCl4]: > [CoBr,l'
(c) Dy{af'} (C) lcoBra]'?' > [CoCl.} > ICo(NCS),1]
(D) La({4f"} (o) tco(NCS).,1? > lCoBr,r > lCoCl,Jl
31. Metallothioneins are natural polypeptides to 35. The final product ofthe reaclion between M(
reverse the toxicity of softer heavy metals like and [Mn(CO)6]. is :
mercury and cadmium; these have mostly the
(A) [Mn(co),]' Me
aminoacid residue with softer donor site :
(B) [Mn(co)jMe]
(A) Glycine
(c) [Mn(co)"]
(B) Leucine
(D) [(Meco)Mn(co),]
(C) Lysine
36' Cysteine is an amino acid with an S-donor s
(D) Cysteine
The calculated formation constants ol
32. Which of the following is the correct order of complexes with some metals (log K valucs)
araaigement of the first five lanthanides according 6.2, 14.4, < 4 and 0.8. Which sct of a.signnrc
to atomic number ? can be the correct one ?

(A) La, Ce, Pr, Nd, Pm (A) Fe", 6.2; Hg']., 14.4; Mg". < 4; Znr .
(B) La, Pr, Ce, Pm, Nd (B) Fe'?., 14.4t Hg", < 4; Mgr', 6.2; Zr''.
(C) La, Pr, Ce, Nd, Pm (C) Fe'?., 6.2; Hgz', 9.8: Mg". < 4; Znt . I
(D) La, Ce, Pr, Pm, Nd (D) Fe'?., < 4; Hgl', 6.2t Mg'-. 14.4; Znl' ,
33. Which of the following can be facile reducing ,r. For the precipitation based method using A1
agent ? io:r \lrr - :C. c r. /
(A) (nLC.H,).Fe (A) \blhard
(B) (1r-C,H,),Co (B) Haber
(C) (q'-C,H.),Ru (C) Fajan's
(D) (qr-C,H,),Mn (D) Mohr method
'a

==:..-:\

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38. For clear quantitative estimation ofAg* and Nir* 41. The most stable aarbanion
among the following
binary mixture, the corlect sequence can be : is:
(A) EDTA titration followed by
dimethylglyoxime to estimate Nir*

m
gravimetrically,

co
(A)
m .
c. o
(B) EDTA titration followed by chloride addition
e m
em of Nir* with drng a s
to estimate Agn gravimetrically.

(C) Cravimetdc sestimation
a Ag* grayimetrically g l
g lby a
a
followed
chloride.
wirh

(D) Ag* gravimetrically with chloride followed (B)
by Ni,+ with EDTA.

39. In the qualitative analysis scheme of cations

o m
(metal ions) ofgroup II, when HrS gas is passed

. c
m
through HCI containing anall4e solution, which

s e
a
of the following precipitates arc not obtained

l
?

(A) Cus
a g (c)
(B) Hss
(c) Bi,s3
(D) CoS

m
40. NO ligand has two binding modes linear and

c. o
?""
m
bent, identify its binding mode in [Co(CO)3(NO)

c. o r'\
I

e m
s
and [Ni(niC,Hr(NO)] complexes respectively.

em(A) Linear and Bent la
(D)
ill
ag
s
la (B) Bent and Linear Y ag I
Noz
(C) Both Linear

(D) Both Bent

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42. Among the following the least stable resonance 44. Which among the following is true for cyclohe)
structure ls : chair conformer ?
(A) It has 12 axial H's

(A)
z'-:\i--o (B) It has 6 axial H's & 6 equatorial H's
o (C) lt has 12 equatorials H's
(D) None of these

(B)4'z'-N"o
b
45. Which among the following doesn't o
Markownikoff's rule ?

(A) H3c-E-cH,
+

(c)/.-7^-N"o
b
(B) Fac-cH:cH2

,", cH:cH2
,.\,.\i-/o "".-J"'
(D)
o
(D) CH3-C'-CH:CH,

The conect statement about the compounds l, II 46. Acidic character ofterminal alkynes is bec
&III: of:
cooH cooH (A) Increased electron density
(B) Increased p-character of sp hybddized ca
oHn OH
atom

OHF (C) lncreased s-character of sp hybridized ca
atom
cooH COOCH3 coocH3
(D) None of th€se
(t) OD oIl)
4'1 . Isopropylchloride undergoes hydrolysis bl
(A) (r) & (ll) are identical
(A) SN' Mechanism
(B) 0) & (ll) are diastereomers
(B) S"'?Mechanism
(c) 0) & (III) are enantlomers
(C) SN' & S"'] Mechanism
(D) 0) & (II) are enantiomers
(D) Neither S*r nor S"'zMechanism

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48. In case of elimination reaction ofalkyl
halide 51. Among the .",."-,,
following
which among the following is compounds, the order of
group ?
the best leaving
""-a,,r"rr',
(A) -I
OH OH

A m
OH

d + A co
(B) -Br

(c) -cl
.c om cHe

e m .
m s
N02

s e (D
g l a
a
GI)' (n)
a
(D) _F

gl following exhibits higher rate
(rv)
49 which amongathe (A) III > Iv > I > II
or etectuophilic substitution,
(B) I>ry>lII>II

(A) ll./-] (c) II > I > III > rv
(D) IV>IIi>I>II

m
n c. o
TO,
(B) o
52.m
s e Alcohol condensation of ('-J with NaOH
:

gla yields:
..

(c) [R
?,
a
o.

(Dr [-
NHr
t-
(A)
a-\:.>\
\_,/ \_/

m
50. with periodic acid (HIO.) glycerol (B)
\11 Fm.com
c. o
undergoes
s e
oxidation to form :

s emGlyceric acid & Meso_oxalic acid la
la (B) Oxalic acid & dihydroxyacetone arF.lag
(A)

ag . (C)
\-J \_-/
(C) Formaldehyde and formic acid

(D) Gtyceraldehyde & glyceric
acid ,.
,or- a\11
\-./ \_,/

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Page 9 of 10

not a sex hormone ?
Which ofthe following is
o,, '? (A) T€stosterone
)-"*,
I _ ll t"
53. ?,."* for the conpound "r:::::,
:""]
Ethanol is , (D) Cortisone
(A) 254 n is correct statement ?
58. which among the following
(B) 237 nm
(A) sdrch is a polymer of ct glqcose
(C) 286 nm
(B) Amylose is a component of cellulose
(D) 313 nm
one typc of
of c-N (C) Proteins of compounds of only
54. The stretching vibration liequency
amino acid
is in the region of:
tlere are four
(A) 1400-1250 cm- (D) In cyclic structure offructose
carbon atoms
(B) 2260-2240 crr)
(c)zsso-zeso".'59.c(.D(+)glucose&p.D(+).glucoseale:
(D) 3590-4420 cm-' (A) Enanttomers
rHNMR peaks observed for the below (B) Geometrical isomers
55. The no. of
given compound is/are :
(c) Epimers
9n, (D) Anomers

r- I
60. At isoelectric point amino
(A) NH,{Ir-cooH
acids are presenr as :

Acotophgnone
I

R
(A) Two
(B) Thlee (B) NHrgH-coo
I

(C) Four R
(D) None of the above
a proton signal gives {c) iH'-qH{ooH
'l
56. The arca under the peak of
information about : R
(A) The natue of Protons
(B) The no. of neighbouring
protons
io) in,-qH-coo
I

(C) The no of equivalent P(otons R
(D) None of the above
10
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