SUBJECT CODE BCKUL&T CODE 2012 \@)

CHEMICAL SCIENCES TEST BOOKLET

Time : 3.40 Hours Maxintum Marks: 200

LNSTRUCTIONS

l<oll No.. ......................

1. You have opted for English as medium of Question Paper. Th~s Test Booklet contauis one hundred and fort) f ive (20 PartLA't5O Pan 'B' t 7 5 Part 'C') Multiple Choice Questions (MCQs). You are required to answer a maximum 6f 15, 35 and 25 quest~clls from part 'P.' 'B' and 'C' respectively. If more than requued nwnbet of quesbons are ansurered, only first 15,35 and 25'questions in Parts 'A' 'B' and 'C' respectively, will be taken up fol evaluation.

2. Answer sheet has been provided separate!^. Before you start filling up your particulars. please ensure that the booklet contalns requist~e number of pages and that these are not torn or mutdated If it is sc. you may request the Invigilator to change the booklet Likewise, check the answer sheet also. Sheets for rough work have been appended to the test booklet.

3. -Wr~te your Roll No., Name, Your address and Serlal N d e r of this Test Bocklet an the - Answer sheet in the space provided on the slde 1 of Answer sheet. Also put y~

signatures inthe space ~dentliied. 4. Y!u must &ken the approoriate circles with a pencil related to Number,

Subtect Code, Bookkt Gade and Centre G o 4 an t h e aaswer sheet. If isthe sole r e s ~ o n s i ~ f i of the candidate to metieuluusly_faH~w the inSfBtstLonyiven the Answer Sheet, failisg which. the computer shsfi nai be able to deClPher lthe

GL-.$*;~> %* -

1 have verified all the information filled in by the. csndidatr. . .

f A

.............................. Signature of the Invigilator

-. .+ - -- 5. .Ea2Kqu&tion5r-~arl 'A' and 'B' carries 2 marks and Part 'C' questiofib carry 4 marks

each ~~qcc t ive ly . There will be negativemrkmg @ 25% for each wrong answkf. 6. Below each question in Part 'A', 'B' and 'C' four aitemarives or responses aTe glvel).

Only one of these alternatives 1s the '.correctv option to the question. You have to find, for each question, the correct or the best answer.

7. Cand~dates found copyme or resortme to anv unfair means are l~able to be disaualified from this and future exarnmations.

8. Candidate should not ~v r~ t e anything anywhere except on answer sheet or sheets for rough work.

9. After the test IS over. you MUST hand over the Test Booklet and answer sheet (OMR) to the mnvlgilator.

10. Use of calculator 1s not pern~ltted.

3 1 1 V ; ) & ? ? m ) ~ ~ # 1 ~ ~ ~ $ ~ ? 7 ? ~ ( 2 0 ym'AqF)+50 ym 'B' + 75 ym 'C' F) ) i&x m=i (MCQ)& w d I amd ym 'A' TY i+

sllamTm15 a k y m ' B ' d 3 5 n m ) m y m ' C ' $ 8 2 5 n m ) & m H d I xf? f%d&i8~ns?)&mftpwrn&mwdw~'A ' 3)15 ,mfB' 3)35 aw w ~ ' C ' 8 2 5 J i i n ) $ l m $ l t ) I i3a?wm3)RVTWl# l m * ~ * * m T ? m ~ ~ ~ ~ m ~ t a ~ f t i r m r $ $ m 3 ~ i , 3 1 f 3 ? # d a w m ? i + m t - & ; I f f i ? 1 s R ~ 6 i = i t ~ sr~+~*~&mr*m&dl*m+mw&m)m d '1 j3 j y~~d3r f imm&3i? i y3 l f t f t rAd3T'7 .Tc1# I m m & p 1 d&w3emwm*311; r= i rqm3m;l~m$Tm g f t i r m r m r r m r m m l & ~ * f f 8 / m d & m m m * # * * r n ~ g f t i J m r * * * & * 3 J ' i i r i e i J ~ @ m ) ~ ~ ~ t ; 1 w w m d h 4 7 & ~ 8 1 8 a ~ m g ? m I ) : R p w W m r @ d * w d * ; r m 3 ; ) ~ ~ 14Q3rrll:m#*3)~;TA:m3mm*deMm ~ ? m g f t i r m r & m r f t e , & 3 l i i b S f t d I ~ ' A ' i w r y m ' B ' d ~ ~ h m = i & 2 d i ~ , w ~ ' C ' d ~ i & m 4 a + m r ~ # 1mk5

9.11 x 103 'Kg

6.63 x 10-"J sec

1.6 x 10-19c

1.38 . 1 0-2' J/K

3.0 x 1 On mlSec

1.097 x 10' m-'

6.033 x 1 0" mole-'

USEFUL FUNDAMENTAL CONSTANTS

Mass of electron

Planck's constant

Charge of electron

Boltzrnann constant

Velocity of Light

1.6 x 1 0 - I ~ J

I .67 x I o-27 kg

6.67 r lo-' Nm'kg-?

Rydberg constant

Avogadro number

8.854 x lo-'' Fm-'

47t x 1 0-7 Hm-'

Molar Gas constants

9.11 x 10-"Kg

6.63 x lo-''' J sec

I .6 x lo-" C

LIST OF THE ATOMIC WEIGHTS OF THE ELEMENTS

Element Svmbol Atomic Atomic Element Symbol Atomic Atomic Number Weight Number Weight

Actinium A c 89 (227) Mercury Hg 80 200.59 Aluminium A l 13 26.98 Molybdenum Mo 42 95.94 Americium Am 95 (243) Neodymium Nd 60 144.24 Antimony Sb 5 1 121.75 Neon N e 10 20.183 Argon A r 18 39.948 Neptunium NP 93 (237) Arsenic As - 33 74.92 Nickel Ni 28 58.71 Astatine At 85 (210) Niobium Nb 41 92.91 Barium Ba 56 137.34 Nitrogen N 7 14.007 Berkelium Bk 97 (249) Nobelium No 102 (253) Beryllium Be 4 9.012 Osmium 0 s 76 190.2 Bismuth Bi 83 208.98 Oxygen 0 8 15.9994 Boron B 5 10.81 Palladium Pd 46 106.4 Bromine B r 35 79.909 Phosphorus P 15 30.974 Cadmium Cd 48 112.40 Platinum Pt 78 195.09 Calcium C a 20 40.08 Plutonium P u 94 (242) Californium C f 98 (251) ~ o l o n i u m Po 84

C 6 (210)

Carbon l2.Ol1 potassium K 19 39.102 Cerium C e 58 140.12 Praseodymium Pr 59 140.91 Cesium C s 55 132.91 Promethium Pm 61 Chlorine C I 17 35.453 protactinium Pa

(147) 91

Chromium C r 24 (231

52.00 Radium Ra 88 Cobalt Co 27 Radon

(226) Rn 86

Copper C u 29 (222)

63.54 Rhenium Re 75 186.23 Curium Cm 96 (247) Rhodium Rh 45 102.91 Dysprosium DY 66 162.50 Rubidium Rb 37 85.47 Einsteinium Es 99 (254) Ruthenium Ru 44 101.1 Erbium Er 68 167.26 samarium Sm 6 2 150.35 Europium Eu 6 3 151'96 Scandium Sc 21 . 44.96 Fermium Fm 100

(253) selenium Se 34 78.96 Fluorine F 9 19'00 silicon Si . .14 28.09 Francium F r 87

(223) silver Ag 47 107.870 Gadolinium Gd 64

3 1 157'25 Sodium Na 1 I 22.9898

Gallium Ga 69.72 3 2

Strontium Sr 38 87.62 Germanium G e 72.59

79 196.97 Sulfur S 16 32.064

Gold A u Hf 72 178.49

Tantalum Hafnium

Ta 73 180.95

He 2 4.003 Technetium Tc 43 (99)

Helium Ho 67

164.93 Tellurium Te 52 127.60 Holmium

H 1 1,0080 Terbium Hydrogen

Tb 65 158.92

Indium In 49 114.82 Thallium TI 81 204.37

Iodine I 53 126.90 Thorium Th 90 232.04

Iridium I r 77 192.2 Thulium Tm 69 168.93

Iron Fe 26 55.85 Tin Sn 50 118.69

Krypton Kr 36 83.B0 Titanium Ti 22 47.90

Lanthanum La 57 138.91 Tungsten W 74 183.85

Lawrencium L r 103 (257) Uranium U 92 238.03

Lead Pb 82 207.19 Vanadium V 23 50,94

Lithium L i 3 6.939 X e 54 131.30

Lutetium L u 7 1 174.97 Ytterbium Yb 70 173.04

Magnesium Mg 12 24,312 Yttrium Y 39 88.91 Manganese Mn 25 54.94 Zinc Zn 30 65.37 Mendelevium Md 101 (256) Zirconium Z r 40 91.22

'Rased on mass of CI2 at 12.000 ... . The ratio of these weights of those on !he order chemical scale (in which oxygen of natural isotopic composition was assigned a mass of 16.0000 ...) is 1.000055. (Values in parentheses represent the most stable known isotopes.)

1 . *i-TzT&Li:&-~uralrl~8?

Which of the following numbers is the largest? 234 ,243 ,324 3 4 ' ,42i ,432

2. h . r ) ' m A B C D E F G H mm*a &3crfm814f)4FA,C m F $Emh-mehm& The cube ABCDEFGH in the figure has each edge equal to a. The area of the triangle with vertices at A, C and F is

3. w w UGCCSIR $ 3 T e n ) & h f h d & f f ~ $ & U U I I-I?-Aw d? What is the number of distinct arrangements of the letters of the word UGCCSIR so that U and I cannot come together?

Suppose the sum of the seven positive numbers is 21. What is the minium possible value of the average of the sqaures of these numbers?

f39z)r7+ml7788?

Which of the following is true?

6. X Y m $ R w r 5 ~ ~ 4 & M $ p ~ m h r n ~ $ 8 1 ~ ~ 3 ~ e r & ~ 8 ~ y--mT)'6 ~ ~ i m m ~ 5 d 8 1 & h j : ~ 8 : A circle of radius 5 units in the XY plane has its centre in the first quadrant, touches the x-axis and has a chord of length 6 units on the y-axis. The coordinates of its centre are

7. 6 4? T.T-Ldrnds3m)nTl Lft m ~ a p j ? v t i $ - ? ~ m m r n 8 i % m m ) o 7 $ ~ ~ & z m m h B m m 8 i m & = p m m m m m ~ Grm?i%m8: A wire of length 6m is used to make a tetrahedron of each edge lm, using only one strand of wire for each edge. The minimum number of times the wire has to be cut is

8. 4 R f 3 9 ~ 5 : d ~ M ~ j ~ ~ x 8i7?10g2x m j ~ m i ? ?

If the sum of the next two terms of the series below is x, what is the value of logzx ?

2, -4, 8, -16, 32, -64, 128 ,.........

A conical vessel with semi-vertical angle 30' and height 10.5 cm has a thin lid. A sphere kept inside it touches the lid. The radius of the sphere in cm is

10. ~ ~ M F + ? * T % % M W ~ ~ ? $ ipi7-3n%%wm*ammm81m ~ * 8 1 m 3 m F c ) m 8 1 W m ~ & 8 1 * & M a m ; f * & ~ z m i T ~ 8 1 & F m * ~ m # 8 ? Amar, Akbar and Anthony are three friends, one of whom is a doctor, another is an engineer and the third is a professor. Amar is not an engineer. Akbar is the shortest. The tallest person is a doctor. The engineer's height is the geometric mean of the heights of the other two. Then which of the following is true?

1. Amar is a doctor and he is the tallest 2. Akbar is a professor and he is the tallest 3. Anthony is an engineer and he is shortest 4. Anthony is a doctor and he is the tallest

11. m 1 0 0 m 1 0 0 h 4 1 0 0 *!lKH78&7 r n d 7 * d ~ z f h TW +IT?

If 100 cats catch 100 mice in 100 minutes, then how long will it take for 7 cats to catch 7 mice?

12. f 3 9 & i % m l m m 8 ? What does this digram demonstrate?

13. 9 1 3 B w & ~ N m ~ & s f f 8 1 9 T 3 & N w m ~ 8 1 ~ m w m ~ ~ E?*f3rm7;Ji.)g w * M & & m & = m M & & m h ? Suppose there are socks of N different colors in a box. If you take out one sock at a time, what is the maximum number of socks that you have to take out before a matching pair is found? Assume that N is an even number.

1. N 2. N + 1 3. N-I 4. N/2

At what time after 4 0' clock, the hour and the minute hands will lie opposite to each other?

15. f - t s & ~ * - i ~ ~ + ~ ~ j j . ) f j 2 m ' p 8 ? Which of the following curves just touches the x axis?

$ * ~ M V W ~ ? If AB is paralled to CD and AO=20D, then the area of triangle OAB is bigger than the area of triangle OCD by a factor of

R ~ & w ~ m J : w ~ r n w J r w f u 3 w ~ m k 7 m r 8 1 m J : ~ m % w M & $ * & m f o f t v ~ d 4 8 ~ 8 1 & & & 8 : A semi-circular arch of radius R has a vertical pole put on the ground together with one of its legs. An ant on the top of the arch finds the angular height of the tip of the pole to be 45". The height of the pole is

Suppose we make N identical smaller spheres from a big sphere. The total surface area of the smaller spheres is X times the total surface area of the big sphere, where Xis

19. wpm241 301 331 391 511 ................ $7 aW? v%r m %? What is the next number in the sequence 24, 30, 33, 39, 5 I,------?

20. w m z ) m w m ~ e m i r ) = l * d m & ;r**M%/F mW&~&31)mf*@Wd)sftW%1wmm&&;Td)* &*8 Four lines are drawn on a plane with no two parallel and no three concurrent. Lines are drawn joining the points of intersection of the previous four lines. The number of new lines obtained this way is

21. For an odd nucleon in 'g' nuclear orbital and parallel to I, spin and parity are:

1. 912 and (+) 2. 712 and (+) 3 . 912 and (-) 4 . 712 and (-)

22. I?gT-*s;mPbd*s:W,

1. PbC12 2. PbS04 3. Pb(Et)4 4. Pb(BF4)2

22. For the deposition of Pb by electroplating, the best suited compound among the following is

(A) Jml-?T ift e (B) * mYiJ-i

(C) m ift 3mQF m (D) m @7 rn

23. Appropriate reasons for the deviation form the Beer's law among the following are

(A) Monochromaticity of light (B) Association of analyte

(C) Very high concentration of analyte (D) Dissociation of analyte

1. A , B a n d D 2. B, C andD 3. A, C and D 4. A, B and C

24. Which one of the following shows the highest solubility in hot concentrated aqueous NaOH ?

25. In the vibrational spectrum of COz, the number of fundamental vibrational modes common in both infrared and Raman are

1. three 2. two 3. one 4. zero

26. The light pink color of [co(H~o)~]*" and the deep blue color of [CoC14] " are due to

1. MLCT transition in the first and d-d transition in the second 2. LMCT transitions in both 3. d-d transitions in both 4. d-d transition in the first and MLCT transition in the second

In [ M O ~ ( S ~ ) ~ I ~ - cluster the number of bridging s:- and coordination number of Mo respectively, are

1. 2andB 2. 2and6 3. l a n d 8 4. 1 and6

I H NMR spectrum of HD would show

1. a singlet 2. a doublet 3 , a triplet with intensity ratio 1 :2: 1 4. a triplet with intensity ratio 1 : 1 : 1

[Ru(PPh3)2(acac)2] (acac =$i#%%?i-$i#Wk) VW%T iwm&d $7 ???iw 8:

1. 2 2. 3 3. 4 4. 5

The number of possible isomers of [R~(PPh;)~(acac)~] (acac = acetylacetonate) is:

1. 2 2. 3 3. 4 4. 5

~ r n ( I I ) W 9 ~ & + t : - \ m f t z r r r C u - o m & ~ m 8

1. 10 2. 6 3. 8 4. 4

The total number of Cu - 0 bonds present in the crystalline copper(I1) acetate monohydrate is

1. 10 2. 6 3. 8 4. 4

1. Li, Cl 2. K , F 3. Na, Cl 4. Li, F

The electronegativity difference is the hlghest for the pair

1. Li, CI 2. K,F 3 . Na, Cl 4. Li, F

Which ones among CO;~-, SO;, XeO; and N03- have planar structure?

1. CO;~-, so3 and X ~ O ; 3. CO;'-, Xe0; and NO3-

2. SO;, Xe0; and NO3- 4. CO;'-, SO3 and NO3-

33. The substitution of q5 - Cp group with nitric oxide is the easiest for

1. Cr, Re+ 2. Mo, V 3. V, Re+ 4. Cr, V

34. The molecule

/OCH3

(°C)5M=C\Ph

obeys 18 e rule. The two 'M' satisfying the condition are

1. Cr, ~ e ' 2. Mo, V 3 . V. Rei 4. Cr, V

1. Fe, Mo, Cu, Zn 2. Fe, Cu, Co, Ru 3. Cu, Mn, Zn, Ag 4. Fe, Ru, Zn, Mg

35. The correct set of the biologically essential elements is,

1. Fe, Mo, Cu, Zn 2. Fe, Cu, Co, Ru 3. Cu, Mn, Zn, Ag 4. Fe, Ru, Zn, Mg

36. [~u(eth~lenediamine)~]*+ i4Mk & cm f3?;z;T EPR dqp? 8 cviV d ad? hv? @ i+m

8 : [Cu m;rrfjfm *(I) 312 mr N mr 1 ]

36. The number of lines exhibited by a lugh resolution EPR spectrum of the species, [~u(eth~lenediamine)~+is [Nuclear spin (I) of Cu = 312 and that of N = 1 ]

& T) (II), ¶?l(II) 277 m (11) 8 m F?g 7l$$Ft akRh=l 4T rn ~ 3 i + JiT m3i+ m ~ m 3 m 8 1 ~ ~ ~ P :

37. Degradation of penicillin G

gives penicillamine that can utilize nitrogen, oxygen or sulfur atoms as donors to bind with lead@), mercury(I1) or copper(I1). The structure of penicillamine is

38. The molecule that has an S6 symmetry element is

39. The electric dipole allowed transition in a rl' atomic system is

When a hydrogen atom is placed in an electric field along the y-axis, the orbital that mixes most with the ground state 1s orbital is

1. 4 10 J K-' mol-' 3. 41 J K-' mol"

For water, AH,, - 41 kJ mol-' . The molar entropy of vaporization at 1 atm pressure is approximately

If A and B are non-commuting hermitian operators. all eigenvalues of the operator given by the commutator [A, B] are

1. complex 2. real 3. imaginary 4. zero

The value of the commutator [x , p:] is given by

The correlation coefficient between two arbitrary variables x and y is zero, if

45. A Carnot engme takes up 90 J of heat from the source kept at 300 K. The correct statement among the following is

1. it transfers 60 J of heat to the sink at 200 K 2. it transfers 50 J of heat to the sink at 200 K 3. it transfers 60 J of heat to the sink at 250 K 4. it transfers 50 J of heat to the sink at 250 K

46. El m E 2 d & $ M d ~ ~ ~ i . r g ~ u / ~ 8 # & d ~ ~ n 1 / n 2 = (312) exp [-(El -E2)lk~T] 8 6'm rn 81 wk~ ~ W W T g2lg1 8

46. The relative population in two states with energies El and Ez satisfying Boltzman distribution is given by nllnz = (312) exp [-(El-E2)kBT]. The relative degeneracy g2/gl is

47. The Daniel1 cell is

1 . P ( s ) (s) n 2 + ( a q ) u 2 ( a ) ( 1 t I ( ) 2. ptI (s)Jzn(s)lzn2+ (aq)l1-4gi (aq)/Ag(s)Ipt~~ (s)

3. Pt, ( s ) l ~ e ( s ) l ~ e ~ + (aq)llcu2' ( ~ ~ ) ~ C U ( S ) I R ~ ~ (s) 4. Pt, (S)~H? (g)H2s04 ( a 9 ) ) 1 ~ ~ ~ + ( ~ ~ ) / C Y ( S ) I P ~ I I (s)

48. If the concept of half-life is generalized to quarter-life of a first order chemical reaction, it will be equal to

49. Kohlrausch's law is applicable to a dilute solution of

1. potassium chloride in hexane 3. hydrochloric acid in water

2. acetic acid in water 4. benzoic acid in benzene

1. I - 2 . NO; 3. Nai 4. Ag'

50. A &lute silver nitrate solution is added to a slight excess of sodium iodide solution. A sol of AgI is formed whose surface adsorbs

1. I - 2. NO; 3. Na' 4. Ag'

51. The absorption spectrum of O2 shows a vibrational structure that becomes continuum at 56875 ern-'. At the continuum, it dissociates into one ground state atom (O$ and one excited state atom (0,). The energy difference between 0, and 0, is 15125 cm-I. The dissociation energy (in cm") of ground state of O2 is

52. The angle between the two planes represented by the Miller indices (1 10) and (1 1 1) in a simple cubic lattice is

The correct representation of the variation of molar conductivity (y-axis) with surfactant concentration (x-axis) is [CMC = critical micelle concentration]

Ag20 MeOH

0 hv

54. The major product formed in the following reaction is

phJ+N2 * 0

MeOH hv

55. If the pK, value for p-methoxybenzoic acid is 4.46 and that of benzoic acid is 4.19, the o,, for methoxy group is

cadinene

56. The biosynthetic precursor of cadinene is

cadinene

1. shilumic acid 2. mevalonic acid 3. arachidonic acid 4. prephenic acid

57. The correct order of acidity of the compounds A-C is

..qPh pipe"dine*

COOEt COOEt

1. E~-I?WRR 2. El-- 3. syn f3&mr;r 4. Elcb-Rzmm

58. The mechanism involved in the following conversion is

HN qPh p~per~dine- 8 &o<o COOEI

+ H z p h COOEt + COz

1. E2-elimination 2. El-elimination 3. syn elimination 4. El cb-elimination

DMSO A + ("1 - M e 0 2 S - @ d 0

N K2C03 - Me02S U H

59. The correct statement(s) A-D are given for the following reaction. The correct one(s) is (are)

DMSO

Me02S + ("1 - M e 0 2 S e N n 0

N K2C03 - w H

(A) aromatic @so substitution reaction (C) aromatic nucleophilic substitution (B) aromatic electrophilic substitution (D) aromatic free radical substitution

1. A and B only 2. A and C only 3. C and D only 4. C only

60. The following photochemical transformation proceeds through

'Ph

1. Norrish type I reaction 3. Barton reaction

2. Norrish type II reaction 4. Paterno-Buchi reaction

1. Phe-Ala-Gly 2. Phe-Gly-Ala 3. Ala-Gly-Phe 4. Gly-Ala-Phe

61. A tripeptide gives the following products on Edman degradation.

The tripeptide is

1. Phe-Ala-Gly 2. Phe-Gly-Ala 3. Ala-Gly-Phe 4. Gly-Ala-Phe

62. 293 K m &%a ~33 7T;I) F 'H NMR dzp~ Ti: F &?&IF dffjtm (C3H7NO), ?&a7 & 6 7.8 (1 H, s), 2.8 (3 H, s) m 2.6 (3 H, s) T & 8'1 w #I%F 8'

1 0 N H 2. me-^ OMe 3. M ~ , ~ A ~ ~ H

" Me&Me

62. In the 'H NMR spectrum recorded at 293 K, an organic compound (C3H7NO), exhibited signals at 6 7.8 (1 H, s), 2.8 (3 H, s) and 2.6 (3 H, s). The compound is

63. In the IR spectrum ofp-nitrophenyl acetate, the carbonyl absorption band appears at

1. 1670 crn-' 2. 1700 cm-' 3. 1730 cm-' 4. 1760cm-"

64. The absolute configuration at the two chiral centres of (-)-camphor is

65. The major product formed in the following reaction is

CHO

66. The first person to separate a racemic mixture into individual enantiomers is

1. J. H. van't Hoff 3. L. Pasteur 3. H. E. Fischer 4. F. Wohler

(A) QF-81 (B) 'H NMR Zf' am'i% M 6 9.28 sn qwf&i- FH 81 (C) ¶%l%i&TZf' m? mi?/

67. Consider the following statements for [18]-annulene

(A) it is aromatic (B) the inner protons resonate at 6 9.28 in its 'H NMR spectrum (C) there are six protons in the shlelded zone.

The correct statements are

1 . A , B , C 2. AandBonly 3 . B and C only 4. A and C only

68. In the compound gven below, the relation between H ~ , HBj and between Br', Br2 is

1. H*, HB are enantiotropic; and Br', ~ r ' are diastereotopic 2. HA, HB are diastereotopic; and Br', B? are enantiotropic 3. HA, HB are diastereotopic; and ~ r ' , Br2 are homotopic 4. H ~ , H~ are enantiotropic; and Br', ~r~ are homotopic

B O c , ~ / \ r o ~ ~ - B o c ~ ~ / \ r o ~ OTBDMS OTBDMS

1. HCl, EtOH, m $ d 3. K2C03, MeOH

2. Bu4NF 4. CF3COOH, EtOH, rt

69. The most appropriate reagent to effect the following chemoselective conversion is

Bocx~/\ro~c -, Boc,~/y\~~ OTBDMS OTBDMS

1. HC1, EtOH, reflux 2. Bu4NF

3. K2C03, MeOH 4. CF,COOH, EtOH, rt

70 Among the following, an example of a "Green Synthesis" is

1. synthesis of malachite green 2. Friedel-Craft's acylation of anisole with Ac20/anhydrous AlC13 3. Jones' oxidation of benzyl alcohol to benzoic acid 4. Diels-Alder reaction of furan and maleic acid in water.

71. The recoil energy of a Mossbauer nuclide of mass 139 amu is 2.5 Mev. The energy emitted by the nucleus in keV is

72. am f~c-[Mo(CO)~(m3rft?)~] mi' + & C-0 m dS +$ /?qr d 8 .

m: PF3 (A); PC13 (B); P(Cl)Ph2 (C); PMe3 @)

v(CO), cm": 2090 (i); 2040 (ii); 1977 (iii); 1945 (iv)

1 ( A - (B-ii) (C-iii) (D-iv) 2. ( A - (B-i) (C-iv) (D-iii) 3. (A - v ) (B - i ) (C - ii) (D - i) 4. ( A - ) ( B - v ) (C-i) (D-ii)

72. Complexes of general formula, fac-[M~(CO)~(phosphine);] have the C-0 stretching bands as given below.

Phosphines: PF3 (A); PC13 (B); P(Cl)Ph2 (C); PMe3 (D)

v(CO), cm-': 2090 (i); 2040 (ii); 1977 (iii); 1945 (iv)

The correct combination of the phosphine and the streching frequency is,

1 ( A - (B-ii) (C-iii) (D-iv) 2. ( A - (B-i) (C-iv) (D-iii) 3. ( A - ( B - i ) ( C - i ) (D-i) 4 ( A - ( B - v ) (C-i) (D-ii)

73. On subjecting 9.5 ml solution of pb2' of X M to polorographic measurements, Id was found to be 1 PA. When 0.5 ml of 0.04 M ~ b " was added before the measurement, the Id was found to be 1.25 PA. The molarity X is

@ I A CH3COOH, faftff;r 4 (i) LWZ WW

B CH3COOH, &So4 J? (ii) C HClO4, H2S04 r): (iii) JFW HRT

D SbF5, HF r): (iv) rn 1. (A-i) (B-ii) (C-iii) (Wiv) 2. ( A - (B-i) (C-iii) ( ITiv) 3. (A-iii) (B-iv) (C-ii) (D-i) 4. (A-iv) (B-ii) (C-iii) ( S i )

74. Match each item from the list I (compound in solvent) with that from the list I1 (its behaviour) and select the correct combination using the codes given below

List I List Il A CH3COOH in pyridme (i) strong acid B CH3COOH in HrSO,j (ii) weak acid C HC104 in H2S04 (iii) strong base D SbFS in J3F (iv) weak base

75. Structure of a carborane with formula, CZB4H8 is formally derived from

2. Nideborane 4. Conjuncto-borane

76. Boric acid is a weak acid in aqueous solution. But its acidity increases significantly in the presence of ethylene glycol, because

1. ethylene glycol releases additional H' 2. B(OH)4- is consumed in fonning a compound with ethylene glycol 3. ethylene glycol neutralizes H' released by boric acid 4. Boric acid dissociates better in the mixed-solvent

77. Be2C3, M CaFz & ??WIT FL) i%?~&b 8 4 "C" & ~TWT iq-FJ;JV 8

1. 2 2. 4 3. 6 4. 8

77. Coordination number of "C" in Be2C3 whose structure is correlated with that of CaF2, is

1. 2 2. 4 3. 6 4. 8

78. f39 ~2

1. A ? C 2. B J C 3. A J D

78. For the molecule below,

consider the following statements about its room temperature spectral data.

A. 'H NMR has singlets at 5.48 and 3.18 ppm B. 'H NMR has multiplet at 5.48 and singlet at 3.18 ppm C. IR has CO stretchng bands at 1950 and 1860 cm-' D. IR has only one CO s t re tchg band at 1900 an-'

The correct pair of statements is,

4. B J D

1. AandC 2. B andC 3. AandD 4. BandD

In the cluster [CO~(CH)(CO)~] obeying 18e rule, the number of metal-metal bonds and the bridging ligands respectively, are

1. 3 a n d l CH 2. Oand3CO 3. 3 and 1 CO 4. 6 and 1 CH

1. Gd (III), Lu (I@ 3. Sm (Ill), Gd (ID)

2. Eu(III), Lu (III) 4. Sm (III), Eu (III)

Consider the ions Eu(III), Gd(III), Sm(II1) and Lu(II1). The observed and calculated magnetic moment values are closest for the pair

Silicates with continuous 3D frame work are

2. Eu(III), Lu (ID) 4. Sm (111), Eu (111)

The correct spinel structure of C0304 is

83. In the solid state, the CUCI~'- ion has two types of bonds. These are

1. three long and two short 3. one long and four short

2. two long and three short 4. four long and one short

1. Ala, Leu, His 3. Leu, Glu, Cys

2. Glu, His, Cys 4. Ala, His, Glu

84. In metalloenzymes, the metal centers are covalently llnked through the side chains of the amino acid residues. The correct set of amino acids which are involved in the primary coordination spheres of metalloenzymes is

1. Ala, Leu, His 3. Leu, Glu, Cys

2. Glu, His, Cys 4. Ala, His, Glu

- 1 ?i+T 11

A. [(R)-BINAPIRU~' (i)

B. [Rh(C0)2121- (ii) mm%i e r o r

C. Pd(PPh3)4 (iii) WPT% i;*+ WFV?FJT

85. Consider the catalyst in column I and reaction in column I1

Column I Column I1

A. [(R)-BINAP]RU'- (i) Hydro formylation

B. [Rh(CO),12]- (ii) Asymmetric hydrogenation

C. Pd(PPh3)4 (iii) Asymmetric hydrogen transfer

D. (iv) Heck coupling

The best match of a catalyst of Column I with the reaction under Column I1 is

86. A solution of 2.0 g of brass was analysed for Cu electrogravimetrically using Pt-gauze as electrode. The weight of Pt-gauze changed from 14.5 g to 16.0 g. The percentage weight of Cu in brass is

87. The platinum complex of NH3 and C1- ligands is an anti-tumour agent. The correct isomeric formula of the complex and its precursor are:

1. c i ~ - P t ( N H ~ ) ~ c l ~ and P~c&'- 2. t ran~-Pt(NH~)~Cl~ and F'tch2-

3. c i ~ - P t ( N H ~ ) ~ c l ~ and P ~ ( N H ~ ) ~ ~ + 4. trans-Pt(NH3)2C12 and P~(NH~).,~'-

88. Fe(N03)3-9H20 & & $ mNaC1, H3PO4, KSCN m N a F J: & bh F? L) d%?k m V W ~ ? ? C ) & m ~ ~ ? t m ~ 8

88. Successive addition of NaC1, H3P04, KSCN and NaF to a solution of Fe(N03)3.9H20 gives yellow, colorless, red and again colorless solutions due to the respective formation of:

89. Which one of the following will NOT undergo oxidative addition by methyl iodide?

90. In hydrofomylation reaction using [Rh(PPh3)3(CO)(H)] as the catalyst, addition of excess PPh3 would

1. increase the rate of reaction 2. decrease the rate of reaction 3. not influence the rate of reaction 4. stop the reaction

91. Find out the number of lines in the 3 1 ~ N M R signal for

1. (i) > (ii) > (iii) > (iv) 3. (ii) > (iii) > (iv) > (i)

2. (i) > (iv) > (iii) > (ii) 4. (iii) > (i) > (iv) > (ii)

92. The rate of exchange of OH2 present in the coordination sphere by "OH2 of, (i) [cu(oH~)~]~'; (ii) [M~(oH~)~]"; (iii) P ~ ( O H ~ ) ~ ] ~ + ; (iv) W ~ ( O H ~ ) ~ ] ~ ~ , follows an order

1. (i) > (ii) > (iii) > (iv) 3. (ii) > (iii) > (iv) > (i)

2. (1) > (iv) > (iii) > (ii) 4. (iii) > (i) > (iv) > (ii)

#&m-*8: 1. A m B 2. B M C 3. C M D 4. A M D

93. Based on the behaviour of the metalloenzymes, consider the following statements.

A. In the enzymes, the zinc activates O2 to form peroxide species. B. In the enzymes, the zinc activates H20 and provides a zinc bound hydroxide. C. In the oxidases, the iron activates O2 to break the bonding between the two oxygens. D. Zinc ion acts as a nucleophile and attacks at the peptide carbonyl.

The set of correct statements is,

1. A a n d B 2. BandC 3. C a n d D 4. AandD

94. ~.e~'-~oIphynns fail to exhibit reversible oxygen transport and cannot differentiate CO fi-om 02. However, the hemoglobin is fiee from both these pit falls. Among the following,

A. ~e '+-~orph~r ins undergo p-oxodimer formation and the same is prevented in case of the hemoglobin.

B. Fe-CO bond strength is much low in case of hemoglobin when compared to the Fe2+- porphy-rins.

C. While Fe-CO is linear, Fe-O2 is bent and is recognized by hemoglobin. D. The interlinked four monomeric units in the hemoglobin are responsible to overcome the

pitfalls.

The correct set of statements is,

1. A a n d B 2. AandC 3. CandD 4. B and D

(A) SnC12 + CO~(CO)~ - ( O C ) 4 C o S n C o ( C 0 ) 4 I

95. Reactions A and B are, termed as respectively C1

I (B) Me2SnC12 + 2NaRe(CO)5 - ( O C ) 5 R e S n R e ( C O ) 5 + 2NaCl

I Me

1. Insertion, Metathesis 3. Oxidative addition, Metathesis

2. Metathesis, Insertion 4. Oxidative addition, Insertion

96. A metal crystallizes in fcc structure with a unit cell side of 500 pm. If the density of the crystal is 1.33 glcc, the molar mass of the metal is close to

97. The activation energy for the bimolecular reaction A + BC -+ AB + C is Eo in the gas phase. If the reaction is camed out in a confined volume of h3, the activation energy is expected to

1. remain unchanged 3. decrease with decreasing h

2. increase with decreasing h 4. oscillate with decreasing h

98. In a many-electron atom, the total orbital angular momentum (L) and spin (S) are good quantum numbers instead of the individual electron orbital ( I , , 12) and spin (s,, s2) angular momenta in the presence of

1. inter-electron repulsion 3. hyperfine coupling

2. spin-orbit interaction 4. external magnetic field

99. The packing fraction of a simple cubic lattice is close to

34

100. The number of IR active vibrational modes of pyridine is

101. One of the excited states of Ti has the electronic configuration [ h ] 4 s 2 3d1 4~7'. The number of microstates with zero total spin (S) for thls configuration is

102. For the reaction A? + 2A in a closed container, the relation between the degree of dissociation (a) and the equilibrium constant K, at a fixed temperature is given by

103 The fugacity of a gas depends on pressure and the compressibility factor Z (= p T / IRT) through the relation [ V is the molar volume]

For most gases at temperature T and up to moderate pressure, this equation shows that

1. f < p , i f T + O 2 . f < p , i f T +ca

104. The internal pressure (aU/dV), of a real gas is related to the compressibility factor Z = p V I R T by

[ V is the molar volume]

1. (aulav), = RT(az/dv)T 2. ( 8 ~ 8 ~ ) ~ = RTI( V Z )

105. Suppose, the ground stationary state of a harmonic oscillator with force constant k is given by

~ / o = exp [-Ax2]

Then, A should depend on k as

1 . A x k - ' I 2

3. A a k'"

2. A a k

4 . AcckIt3

106. Combining two real wave functions and h , the following functions are constructed: A = qh + h, B = p l + i h , C = # 1 - ' zh, D = i(#l+ h) . The correct statement will then be

1. A and B represent the same state 2. A and C represent the same state 3. A and D represent the same state 4. B and D represent the same state

107. Crystal A difficts fiom (1 11) and (200) planes but not fiom (I 10) plane, while the crystal B diffracts fi-om (1 10) and (200) planes but not fiom the (1 1 1) plane. From the above, we may conclude that

1. A has fcc lattice while B has bcc lattice 2. A has bcc lattice while B has fcc lattice 3. A and B both have fcc lattice 4. A and B both have bcc lattice

108. The decomposition of NH3 on Mo surface follows Langrnuir-Hinshelwood mechanism. The decomposition was carried out at low pressures. The initial pressure of NH3 was 10.' tom. The pressure of NH3 was reduced to lo4 ton in 10 minutes. The rate constant of decomposition of NH3 is

1. 9 . 9 ~ l ~ ~ t o r r m i n - ' 3. 9.9 x 1 oJ torr min"

q a ~ m qy?&%~ p (P.D.I.) 8 :

37

109. A polymer sample has the following composition.

The polydispersity index (P.D.I.) of the polymer is

110. The equilibrium constant for .an electrochemical reaction 2 ~ e ~ ' + snZ' + 2 ~ e " + Sn4'

is [EO (Fe3' /Fe2') = 0.75V,E0 (Sn4' /Sn2') =O. 15V, (2.303RT / F)= 0.06VI

111. A bacterial colony grows most commonly by cell division. The change in the population due to cell division in an actively growing colony is dN = /Z,N d l . The population of bacterial colony at

time t is [No = N(t = 0)]

112. The Arrhenius parameters for the thermal decomposition of NOC1, 2 NOCl(g) + 2N0 (g)

+C12(g), areA= 1013 M-'s-', E,= 105 kJmol-' and ~ ~ = 2 . 5 k~mol-I . The enthalpy (inkJ mol-I) of the activated complex will be

113. The rotational partition function of Hz is

3. exp [ - ~ r ] l r 4 . KY

114. The potential in Debye-Hiickel theory is proportional to

3. exp [ - ~ r ] l r 4 . KY

115. The vibrational frequency and anharrnonicity constant of an alkali halide are 300 cm-' and 0.0025, respectively. The positions (in crn-') of its fundamental mode and first overtone are respectively

116. The adsorption of a gas is described by the Langmuir isotherm with the equilibrium constant K = 0.9 kPa-' at 25OC. The pressure (in kPa) at which the fractional surface coverage is 0.95, is

1 117. The energy of a harmonic oscillator in its ground state is -Am . According to the virial theorem, 2

the average kinetic (7) and potential ( V ) energies of the above are

- hcR, 118. The energy of a hydrogen atom in a state is - (R , = Rydberg constant). The degeneracy of

25 the state will be

119. The trial wave function of a system is expanded as cy, =c,q, + c2p2 . The matrix elements of the

Hamiltonianare ( 9 1 1 ~ l p l ) = ~ ; I ~ / p ~ ) = 2 . 0 = ( 9 ~ 1 ~ 1 ~ ) and (V21~/V2),,)=3.0. The

approximate ground-state energy of the system fiom the linear variational principle is

120. One molecular orbital of a polar molecule AB has the form c,yA + cB%, where % and % are

normalized atomic orbitals centred on A and B, respectively. The electron in this orbital is found on atom B with a probability of 90%. Neglecting the overlap between ly, and cy, , a possible set

of c, and CB is

1. 6 171 (C-4), 162 (COOH), 133 (C-3 & 5), 122 (C-1) and 1 16 (C-2 & 6) 2. 6 171 (COOH), 162 (C-4), 133 (C-2 & 6) , 122 (C-1) and 1 16 (C-3 & 5) 3. 6 171 (C-4), 162(COOH), 133 (C-2&6) , 122(C-1)and 116(C-3 & 5 ) 4. 6 171 (COOH), 162 (C-4), 133 (C-3 & 5), 122 (C-1) and 1 16 (C-2 & 6)

121. 4-Hydroxybenzoic acid exhibited signals at 6 171,162,133,122 and 116 ppm in its broadband decoupled I3c W spectrum. The correct assignment of the signals is

1. 6 171 (C-4), 162(COOH), 133(C-3&5), 122(C-1)and 116(C-2&6) 2. 6 171 (COOH), 162 (C-4), 133 (C-2 & 6), 122 (C-1) and 1 16 (C-3 & 5) 3. 6 171 (C-4), 162 (COOH), 133 (C-2 & 6), 122 (C-1) and 11 6 (C-3 & 5) 4. 6 171 (COOH), 162 (C-4), 133 (C-3 & 5), 122 (C-1) and 1 16 (C-2 & 6)

IR: 3400, 1680 c m ' ; 1 HNMR:67.8(1H,d,J=8Hz),7.0(1H,d,J=8Hz),6.5(1H,s),5.8(1H,s,D20

I%'%$, 3.9 ( 3 H, s), 2.3 (3 H, s).

2. H o e 0 - OMe

HO.

3. W M e

OMe OMe

122. An organic compound (C9H1003) exhibited the following spectral data: IR: 3400,1680 cm-'; I HNMR:67.8(1H,d,J=8Hz),7.0(1H,d,J=8Hz),6.5(1H,s),5.8(1H,s,DzO

exchangeable), 3.9 (3 H, s), 2.3 (3 H, s). The compound is

OM^ \ OMe

123. The [a],, of a 90% opticallly pure 2-arylpropanoic acid solution is +135". On treatment with a base at RT for one hour, [ a ] ~ changed to +120°. The optical purity is reduced to 40% after 3 hours. If so, the optical purity of the solution after 1 hour, and its [aID after 3 hours, respectively, would be

1. 80%; and 60"

3 . 80%; and 90"

2. 70%; and 40"

4. 70%; and 60"

124. In the following pericyclic reaction, the structure of the allene formed and its configuration are

(optically pure)

2. Me,, iC Ph

hv / CON

A I DIS

A I CON

125. In the following sequence of pericyclic reactions X and Y are

a P h hv I DIS

"CCOOH

hv 1 CON

. A I DIS

"-COOH

4. QQhH A I CON

126. The major product formed in the following reaction is

127. The following conversion involves

1. a 1,3-dipolar species as reactive intermediate, and a cycloaddition. 2. a carbenium ion as reactive intermediate, and a cycloaddition. 3. a 1,3-dipolar species as reactive intermediate, and an aza Wittig reaction. 4. a carbanion as reactive intermediate, and an aza Cope rearrangement.

128. The following transformation involves

CHO HO Me ,,+

+ M ~ H N & -- N

1. an iminium ion, [3,3]-sigmatropic shift and Mannich reaction. 2. a nitrenium ion, [3,3]-sigmatropic shift and Michael reaction. 3. an iminium ion, [I ,3]-sigmatropic shift and Mannich reaction. 4. a nitrenium ion, [1,3]-sigmatropic shift and Michael reaction.

COOH

X Y @LOOH boucooH- - -

OH A HO C

129. With respect to the following biogenetic conversion of chorismic acid (A) to 4- hydroxyphenylpyruvic acid (C), the correct statement is

COOH

X Y - B - fj+:oo. boncooH OH A

H0 C

1. X is Claisen rearrangement; Y is oxidative decarboxylation. 2. X is Fries rearrangement; Y is oxidative decarboxylation. 3. X is Fries rearrangement; Y is dehydration. 4. X is Claisen rearrangement; Y is dehydration.

i. P - M a . M , - W ii. iwHh b. ea%+$q &ffh iii. 9"m;f.T ~ . ~ & f h = ~ iv. p?@=r d. amfh g ~ d k !lZ%%

1. i-c; ii-d; iii-b; iv-a

3. i-c; ii-b; iii-d; iv-a

2. i-b; ii-a; iii-c; iv-d

4. i-a; ii-d; iii-b; iv-c

130. Match thk following

i. P-arnyrin a. alkaloid; secondary alcohol ii. squalene b. alkaloid, phenol iii. morphine c. triterpene, secondary alcohol iv. ephedrine d. acyclic triterpene, polyene

1. i-c; ii-d; iii-b; iv-a

3. i-c; ii-b; iii-d; iv-a

2. i-b; ii-a; iii-c; iv-d

4. i-a; ii-d; iii-b; iv-c

131. In the following reaction, the structure of B, and the mode of addition are

Re-Si facial Si-Si facial

132. In the following reaction A and B are

i. a--d3$@f%- a. 6 7 - m ii. y%%~ 3$ mz%& b. NADH iii. m ?? f+%B %---A C.

d. f;i/?&icm<&

1. i-d; ii-a; iii-c; 3. i-b; ii-a; iii-c;

2. i-a; ii-b; iii-d; 4. i-d; ii-b; iii-c;

133. Match the following biochemical transformations with the coenzymes involved

i. a-ketoglutarate to glutamic acid a. tetrahydrofolate ii. uridine to thymidine b. NADH iii. pyruvic acid to acetyl coenzyme A c. thiamine pyrophosphate

d. pyridoxamine

1. i-d; ii-a; iii-c; 3. i-b; ii-a; iii-c;

2. i-a; ii-b; iii-d; 4. i-d; ii-b; iii-c;

CHO

HO COOH

OH OH

CH20H HO OH COOH

COOH

134. The structure of the major product B formed in the following reaction sequence is

CHO

COOH COOH

H2, Pd, 250°C

(e,e conformer)

1. 0.9 kcal/mol 2. 1.8 kcal/mol 3. 2.7 kcal/mol 4. 3.6 kcallmol

135. Given the energy of each gauche butane interaction is 0.9 kcaYmol, AG value of the following reaction is

HZ, Pd, 2 5 0 ' ~

(e,e conformer)

COOEt Hz, 10% PdIC

MeOH B Me0 Me0

0

4. NaH, ~;$-COOQ COoEt

B i Me0 & 136. In the following reaction, the reagent A and the major product B are

COOEt HZ, 10% PdlC & MeOH Me0 Me0

Y 4. NaH. ~ T - C O O E ~ COOEt

B i Me0

137. The major product formed in the following reaction sequence is

1. 80 g, CI', 2. 40g, CI', 3. 60 g, CHI^ 4. 30 g, CHI^

138. 12.0 g of acetophenone on reaction with 76.2 g of iodine in the presence of aq. NaOH gave solid A in 75% yield. Approximate amount of A obtained in the reaction and its structure are

139. Consider the following reaction mechanism.

The steps A, B and C, respectively, are

1. oxidative addition; transmetallation; reductive elimination. 2. oxidative addition; carbopalladation; P-hydride elimination. 3. carbopalladation; transmetallation; reductive elimination. 4. metal halogen exchange; transmetallation; metal extrusion.

1. CHCI3, NaOH * 2. H202, NaOH

0 0 4. HOOC

140. The major product formed in the following reaction sequence is

1. CHCI3, NaOH * 2. H202, NaOH

-0 4. HOOC

141. The major product B formed in the following reaction sequence is

1. 'Me 2. & OMe

Me

142. The major product B formed in the following reaction sequence is

N N H P h

C H 2 0 H

A

2. & OMe

Me

143. The osazone A could be obtained from

NNHPh

CH20H

A

1. glucose and mannose. 3. gulose and fructose.

2. mannose and galactose. 4. galactose and fructose

1. Li, liq. NH 3, t~~~~

2. H 3 0 + 3. KOH, MeOH

144. The major product formed in the following reaction is

1. Li, liq. NH3, 'BUOH

2. H30' 3. KOH, MeOH

c L o ~ e

O C 0 O E t 1. "BuLi, HN-SiMe,

2. H30+ *

3. HZ, Raney Ni

NH2 COOEt ,,\COOEt

2.

145. In the following enantioselective reaction, the major product formed is

3. Hi, Raney Ni

SCIENCES I Roll Number

m-w / ANSWERSHEET

BooldetCode Mdhml abjectcode Cen$sCods t

4 - - - - F- 2

ANSWER COLUMNS

7XK 1 ANSWER 0 0 0 0 e 0 0 0 O O O Q 0 0 0 0 0 0 . 0 0 0 0 0 0 0 . 0 0 0 0 . 0 0 0 . e 0 0 0 0 . 0 0 e 0 0 0 0 0 0 0 0 0 . , O 0 0 0 0 0 0 0 . o e o o 0 . 0 0 0 0 0 0 0 0 0 . 0 . 0 0 0 0 . 0 0 0 0 . 0 . 0 0 o e o o 0 0 0 0 . o o o 0 0 0 0 0 0 0 . e 0 0 0 0 . 0 0 0 0 0 . 0 . 0 0 0 0 . 0 .

0 0 0 0 0 . 0 0 o o o e e 0 0 0 e 0 0 0

0 0 0 . a 0 0 0 . 0 0 0 0 . 0 0 e 0 0 0 0 0 0 . 0 0 0 0 8 0 0 0 0 0 0 . 0 0 0 0 0 0 0 . e o o o 0 . 0 0 0 . 0 0 e o o o 0 0 . 0 0 0 . 0 m o o 0 0 0 . 0 0 0 . 0 0 . 0 0 o e o o a 0 0 0 O O C O 0 0 . 0

3Z 1 ANSWER 0 0 0 0

0 0 . 0 o e o o o e o o e 0 0 0 0 0 . 0 a 0 0 0 0 0 0 . 0 . 0 0 0 0 0 . e o o o e 0 0 0--- o o e o 0 0 0 0 a 0 0 0 e 0 0 0 . 0 0 0 . o o o 0 0 0 0 a 0 0 0 . 0 0 0 e o o o o e o o e o o o 0 0 . 0 0 0 0 0 a 0 0 0 0 . 0 0 a 0 0 0 a 0 0 0 e o o o o e o o 9 0 0 0