Triumph- JEE Advanced CHemistry - Paper 1

1. CHEMISTRY
[16] IIT JEE – 2013
Part II
Section–I : Straight Correct Answer Type
This section contains 10 multiplechoice questions. Eachquestion has fourchoices (A),(B), (C) and(D), out
of which ONLYONE is correct.
21. Thecompoundthatdoes NOTliberate CO2 ,ontreatment withaqueous sodiumbicarbonatesolution,is
(A)Benzoicacid (B)Benzenesulphonicacid
(C)Salicylicacid (D) Carbolicacid (Phenol)
Ans: (D)
22. Concentratednitricaciduponlongstanding,turns yellow-brownduetotheformationof
(A) NO (B) NO2 (C) N O2 (D) N O2 4
Ans: (D)
23. Methyleneblue,form its aqueous solution,is adsorbed on activatedcharocal at 25C . Forthis process,
the correct statement is
(A) The adsorption requires activation at 25C
(B) The adsorption is accompanied byadecrease in enthalpy.
(C) Theadsorption increases with increaseof temperature.
(D)Theadsorptionis irreversible.
Sol: (B)
24. Sulfideores arecommonforthemetals
(A) Ag , Cu and Pb (B) Ag, Cu and Sn (C) Ag, Mg and Pb (D) Al, Cu and Pb
Sol: (A)
25. The arrangement of X
ionsaround A
ion insolidAXis given inthe figure(not drawntoscale).If the
radius of X
is 250 pm, the radius of A
is
(A) 104 pm (B) 125 pm (C) 183 pm (D) 57 pm
Sol: (A) r r pm   2 1 104e j

2. CHEMISTRY
[17] IIT JEE – 2013
26. Upontreatment withammoniacal H S2 ,themetal ionthatprecipitates as asulfideis
(A) Fe IIIb g (B) Al IIIb g (C) Mg IIb g (D) Zn IIb g
Sol: (D)
27. The standard enthalpies of formation of CO g2 ( ) H O2 ( ) and glucose (s) at 25C are
 400 300kJ mol kJ mol/ , / and 1300 kJ mol/ ,respectively. Thestandardenthalpyofcombustion
per gram of glucose at 25C is
(A)  2900 kJ (B)  2900 kJ (C)  1611. kJ (D)  1611. kJ
Sol: (C) C H O s O g CO g H O6 12 6 2 2 26 6 6( ) ( ) ( ) ( )    
HC
o
     6 400 6 300 1300b g b g b g
 2900 kJ mol/
 
2900
180
kJ g/
 1611. /kJ g
28. Considerthe followingcomplex ions, P, QandR.
P FeF Q V H O 
 
6
3
2 6
2
, b g and R Fe H O

2 6
2
b g
The correct orderof the complexions, accordingto theirspin-onlymagneticmoment values (inB.M.) is
(A) R Q P  (B) Q R P  (C) R P Q  (D) Q P R 
Sol: (B)

3. CHEMISTRY
[18] IIT JEE – 2013
29. In the reaction
P Q R S   
thetimetakenfor75%reactionofP is twicethetimetakenfor50%reactionofP.TheconcentrationofQ
varies withreactiontimeas showninthefigure.Theoverall orderof thereactionis
(A) 2 (B) 3 (C) 0 (D) 1
Sol: (D) t1 2/ is independent of intial concentration of P. First order withrespect to P andzero order with
respect to Q.(From given figure)
30. KI in acetone, undergoes SN 2 reaction with each of P, Q R and S. The rates of the reaction varyas
H C Cl3  Cl Cl
P Q R S
(A) P Q R S   (B) S P R Q  
(C) P R Q S   (D) R P S Q  
Sol: (B)

4. CHEMISTRY
[19] IIT JEE – 2013
Section–II
Multiple Correct Answer(s) Type
This section contains 5 multiple choice questions. Each question four 4choices (A), (B), (C) and (D),out of
which ONE or MORE are correct.
31. Thepairs (s)ofcoordinationcomplexes/ionsexhibitingthesamekindofisomerismis (are)
(A) Cr NH Cl Cl3 5 2b g and Cr NH Cl Cl3 4 2b g
(B) Co NH Cl3 4 2b g 
and Pt NH H O Cl3 2 2b g b g 
(C) CoBr Cl2 2
2
and PtBr Cl2 2
2
(D) Pt NH NO Cl3 3 3b g b g and Pt NH Cl Br3 3
b g
Sol: (B, D)
32. Among P, Q, R and S, the aromatic compound(s) is/are
AlCl3
  P
NaH
  Q
NH CO
C
4 2 3
100 115
b g   R
HCl
  S
(A) P (B) Q (C) R (D) S
Sol: (A, B, C, D)

5. CHEMISTRY
[20] IIT JEE – 2013
33. Thehyperconjugativestabilities of tert-butyl cationand 2-butene, respectively, aredue to
(A)   p (empty) and   * electrondelocalisations.
(B)   * and   electron delocalisations
(C)   p (filled)and   electrondelocalisations.
(D)p(filled) * and   * electrondelocalisations
Sol: (A)
34. Benzeneandnaphthaleneformanidealsolutionatroomtemperature.Forthisprocess,thetruestatement(s)
is (are)
(A) G is positive (B) Ssystem is positive
(C) Ssurroundings  0 (D) H  0
Sol: (B, C, D)
35. The initial rate of hydrolysis of methyl acetate 1Mb g byaweak acid HA M,1b g is HA M,1b g of that of
a strong acid HX M,1b g, at 250
C. The Ka
of HA is
(A) 1 10 4
 
(B) 1 10 5
 
(C) 1 10 6
 
(D) 1 10 3
 
Sol: (A)
H
H
HA
HX



1
100
 H M
HA
 
 10 10 2
.
 K
H A
HA
a  
 
 
   
~
. .10 10 10 10
1
1 10
2 2
4e je j

6. CHEMISTRY
[21] IIT JEE – 2013
Section–III
Integer Answer Type
This section contains 5 questions. The answer to each is a single-digit integer, ranging from 0 to 9 (both
inclusive).
36. The total number of carboxylic acidgroups in the product P is
1
2
3
3
3
2 2
. ,
.
.
H O
O
H O

 
Sol: (2)
37. Atetrapeptidehas COOH groupsonalanine.Thisproduces glycine(Gly),valine(Val),phenyl alanine
(Phe) andalanine(Ala), Oncompletehydrolysis.For this tetrapeptide, thenumberofpossiblesequences
(primarystructures) wih NH2 groupattached to a chiral center is
Sol: (4) Phe – Gly– Val – Ala
Phe – Val – Gly– Ala
Val – Phe – Gly– Ala
Val – Gly– Phe – Ala
38. EDTA4 is ethylenediaminetetraacetate ion. The total number of N Co O  bond angles in
Co EDTAb g1
complexionis
Sol: (8)
39. Thetotal numberoflonepairsofelectronsinmelamineis
Sol: (6)
40. TheatomicmassesofHeandNeare4and20amu,respectively.ThevalueoftheBrogliewavelenthofHe
gas at  73 C is "M" times that of the de Broglie wavelength of Ne at 7270
C M is
Sol: (5) 
  
  
MV
M
KT
M
K MT3 3
M
M
M
T
T
He
Ne
Ne
He
Ne
He
  


  
20
4
1000
200
5