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CSIR-IIT-JAM Notes...

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1

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E : [email protected] w : ww w.careerendeavour.com

Delhi-110 016

www.facebook.com/careerendvour

2

PART – A 1.

2.

3.

4.

5.

6.

In a certain code, SIKKIM is written as THLJJL. How is TRAINING written in that code? (a) SQBHOHOF (b) UQBHOIOF (c) UQBHOHOI (d) UQBHOHOF The missing term in the series 3, 4, 0, 9, ____, +18, –18, 31 is (a) 0 (b) –10 (c) –7 (d) 12 If Neena says, “Anita’s father Raman is the only son of my father-in-law Mahipal”. Then how is Bindu, who is the sister of Anita, related to Mahipal? (a) Niece (b) Daughter (c) Daughter-in-law (d) None of these Starting from a point P, Sachin walked 20 meters towards south. He turned left and walked 30 meters. He then turned left and walked 20 meters. He again turned left and walked 40 meters and reached a point Q. How far and in which direction is the point Q from the P? (a) 30 metres, west (b) 10 metres, west (c) 30 metres, north (d) 10 metres, north A, P, R, X, S and Z are sitting in a row. S and Z are in the centre. A and P are at the ends. R is sitting to the left of A. Who is to the right of P? (a) A (b) X (c) S (d) Z Choose the box that is similar to the box formed from the given sheet of paper (X)

(X)

(1)

(a) 1 and 4 only 7.

8.

(2)

(3)

(b) 3 and 4 only

(4)

(c) 1 and 2 only

2 of the marked price, there is a loss of 25%. The ratio of the marked price and 5 the cost price of the article is. (a) 2:5 (b) 5:2 (c) 8:15 (d) 15:8 In the given figure O is the centre  OBC = 50 and  OAC = 15. Then the value of the  AOB is

By selling an article at

?

O

15 A

9.

10.

(d) 2 and 3 only

(a) 30 (b) 40 (c) 20 How many squares are there in the following figure?

C 50 B

(d) 70

(a) 124 (b) 25 (c) 26 (d) 227 Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water? (a) 1:1 (b) 2:3 (c) 1:2 (d) 3:2 South Delhi : 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 North Delhi : 33-35, Mall Road, G.T.B. Nagar (Opp. Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255

3

PART – B 11.

Number of signals in the Mössbaur spectrum of Fe3(CO)12 and Fe2(CO)9 is (a) 1 and 2 (b) 2 and 3 (c) 4 and 1 (d) 2 and 1

12.

The intensity pattern in the ESR spectrum of CD3 radical molecule is (a) 1 : 4 : 6 : 4 : 1 (b) 1 : 3 : 6 : 7 : 6 : 3 : 1 (c) 1 : 5 : 10 : 10 : 5 : 1 (d) 1 : 2 : 3 : 3 : 2 : 1 A free Mössbauer nucleus of mass 100.6 amu emits radiation of wavelength 0.1 nm. The recoil velocity of Doppler shift is (a) 30.52 ms–1, 3.9×1010 m (b) 3.9×1010m, 35 ms–1 10 –1 (c) 40×10 m, 40 ms (d) 39.52 ms–1, 3.952×1010 m The number of fine and hyperfine line in the ESR spectrum of [Fe(CN)5NO]–3 is [NO(I = 1)] (a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 4 and 1

13.

14. 15. 16.

The transition that belongs to the Balmer Series in the hydrogen-atom spectrum is (b) 2s  4 p (c) 1s  4 p (d) 2s  2 p (a) 3s  4d In gas solid chromatography the fixed phase consists of a solid material such as (a) Granular silica (b) Magnesium (c) Sodium (d) Calcium

17.

The half life period of 53Y125 is 70 days. The percentage of the original radioactivity would be present after 280 days is (a) 8.25% (b) 6.25% (c) 15% (d) 19%

18.

Arrange the following in decreasing order of Rh–C bond length (A) Rh CO2  Cl PPh3  2

19.

(B) Rh  CO 2  Cl PEt3  2

(C) Rh  CO 2  Cl   P  C 6F5 3  2

(a) C > A > B (b) C > B > A (c) B > A > C The most unstable beryllium alkyl compound is t (b) Be CH 2 Bu 2

(a) BeMe 2

(c) Be  Et 2

(d) A > B > C (d) Be CH 2 SiMe3  2

O

20.

H

A= O

O

O

B=

The correct statement about reaction A and B (a) A is catalysed by Rh(I) complex, RhCl(PPh3)3 (b) B is catalysed by Rh(I) complex, RhCl(PPh3)3 (c) A and B both are catalysed by Rh(I) complex, RhCl(PPh3)3 (d) None is catalysed by Rh(I) complex, RhCl(PPh3)3 21.

In the reactions : (1) graphite +K vapours  High  (2) carbon  Ca  Temp

the products

and

(a) K4 C and Ca 2 C

respectively are (b) K 2C 2 and CaC

(c) KC8 and CaC2

(d) KC and CaC 4

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4 22.

The ores of Ti, Ta and Nb may be brought into solution near 800 ºC using Na 2S 2O 7 . A simplified reaction may be as follows :

TiO 2  Na 2S2O 7  Na 2SO 4  TiO SO 4  The acid and base in the reaction are : (a) Ti 4  as base and Na in Na 2S2O as acid (b) S 2O 72 as base and O2 as acid (c) O 42  of TiO 2 (base) and SO 3 in S 2O 7 (acid) (d) Ti 4  as acid and S 6  as acid 23.

When alkali metal fluorides are dissolved in XeOF4 anion X is formed. The shape of anion X is (a) distorted octahedral (b) pentagonal monopyramidal (c) octahedral (d) square antiprismmatic

24.

HOMO and LUMO of I3 respectively are (a) bonding and antibonding (c) bonding and non-bonding

(b) non-bonding and antibonding (d) both non-bonding

25.

Correct order of metal oxides in increasing order of their Neel temperature (b) MnO  FeO  CoO  NiO (a) MnO  FeO  CoO  NiO (c) CoO  NiO  FeO  MnO (d) NiO  FeO  CoO  MnO

26.

Activity of catalase enzyme is inhibited by (a) CO (b) O2

(c) N2

(d) CN– 2

28.

The coordination number of complex  UO 2 18 crown-6  (a) 8 (b) 11 (c) 9 (d) 12 The occupation factor  is 0 and 1/2 respectively for which of the following pairs of mixed oxides (I) CuAl2O4 and Mn3O4 (II) NiCr2O4 and ZnFe2O4 (III) Co3O4 and CoFe2O4 (IV) CoAl2O4 and ZnMn2O4 (a) I, II and IV (b) II and IV (c) III and IV (d) III only

29.

Find the value of ‘x’ in – Na 3Ba xSi 5O 152

27.

7 (c) 14 (d) 2 2 The equilibrium constant for following reaction of ethylenediammine with Co2+, Ni2+ and Cu2+ are k1, k2 and k3 respectively.

(a) 7 30.

(b)

2

AA  M H 2O  AA    M AA   2 2 3   then select the correct statement from the following (b) k3  k2  k1 (c) k2  k3  k1 (a) k 2  k1  k 3

2

(d) k2  k3  k1

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5

PART – C 31.

32.

33.

34.

The correct statement is/are (1) For an odd nucleon in ‘H’ nuclear orbital and parallel to I. The spin and parity for this odd electron nuclear 11 is and (+). 2 (2) The electric dipole allowed transition in a d3 system is 4 F  4 D (3) The ionisation energy for one-electron in Lyman series is 52 eV. The wavelength for this one electron ion is 24 nm. 3 (4)   3 is allowed transition and if the ionisation energy of H atom is x. The ionisation energy of He+1 is 16x. (a) 1, 2 (b) 1, 3 (c) 1, 4, 3 (d) 2, 3, 4 The correct statement about gas chromatography is/are (1) A gas chromatography separates components of a gaseous mixture in a column and detects the components as they are eluted. (2) Useful absorbents for GSC will have very large surface areas or are very porus material (3) In gas chromatographic methods are generally not applicable to highly non-polar substances (a) 1, 2 (b) 1, 3 (c) 1, 2, 3 (d) 2, 3 The property measured in TGA is (a) change in weight (c) heat evolved or absorbed

The most difficult synthesis among the following synthetic transformation is (a) PtC l2(PPh3 )2 + Li Li (b) ZrCl 4 +

4P hCH2 MgCl

(c) CH3 Li +

WCl 6

(d) TiCl4 35.

(b) rate of change in weight (d) change of temperature

+

4Li

Arrange the rate of substitution reaction in the following compound Mo  CO 4 L2  CO   Mo  CO 5 L  L

36.

L  PhPMe 2

Ph2 PMe

A

 B

(a) A > B > C Match the following Column-A

(b) C > B > A

PPh 3

 C (c) B > C > A

(d) B > A > C

Column-B

Complexs (fac isomers)

 CO cm 1

(A) Mo CO3 dien

(I) 2090, 2055

(B) Mo CO 3  PPh3 3

(II) 2040, 1991

(C) Mo CO 3 P  OMe 3

(III) 1977, 1888

(D) Mo CO3  PF3 3

(IV) 1934, 1835

(E) Mo CO3  PCl 3 3

(V) 1898, 1758

(a) A-5, B-4, C-2, D-1, E-3 (c) A-5, B-4, C-3, D-1, E-2

(b) A-4, B-2, C-5, D-1, E-3 (d) A-3, B-2, C-5, D-1, E-5

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6 37.

Identify the correct statement 3 3 (A) The cluster electron count and number of M–M bond in Cp3 Co3 µ  CS µ  S is 48 electron and 3

M–M bond respectively. (B) The complex OC  Mo  CO 5 is isolobal with OC  CH 2 3

(C)  Rh 7 CO 16 ,  Os 7 CO 21  are isostructural 3

4

(D) The ionic crystal Bi 5  is closo while Sn9  is arachano structure (a) A and B (b) C and D (c) A, B and C

(d) A and C

38.

1.84 gm of IF3 reacts with 1.86 gm of [Me4N]F to form product X. The shape of anion and number of 19F NMR signals in IF3 and X respectively are (a) square planar, 2, 1 (b) TBP, 2, 2 (c) Pentagonal planar, 2, 1 (d) Td, 2, 2

39.

Arrange the decreasing order of rate constants (k/dm3mol–1s–1) for following electron transfer reaction in aqueous medium and select the reaction(s) for which G0  0 3

(I)  Ru  NH 3 6    Ru  NH 3 6 

2

3

(III)  Co  NH 3  6    Co  NH 3  6 

3

(II) Co  NH 3 6   Ru  NH 3 6 

2

2

(a) II > I > III,  G0  0 for I and III

(b) I > II > III, G 0  0 for I and II

(c) I > II > III,  G0  0 for I and III

(d) III > II > I, G 0  0 for I

40.

Identify the incorrect statement(s) (I) Each subunit in deoxyheamoglobin contain 5-coordinate Fe(II), but in cytochrome-c, the Fe centre is always 6-coordinate (II) Cytochrome-c oxidase contain more than one metal centre (III) The binding of O2 to myoglobin exhibit a cooperative effect (IV) Cytochrome P-450 is dioxygenase (a) I, II and III (b) I, II, III and IV (c) I, III and IV (d) III and IV

41.

The ground state term symbol and magnetic moment (BM) for Tm3+ is (a) 3I6 and 9.58 (b) 2H5 and 7.56 (c) 3H6 and 7.56 (d) 3F7/2 and 9.58

42.

Egyptian blue, CaCuSi4O10 (I) is pale blue and spinel CuAl2O4 (II) is an intense blue-green. The difference in colours is due to (a) LMCT in I and d-d transition in II (b) d-d transition in both (c) difference in geometry of Cu in I and II (d) d-d in first and LMCT in II

43.

At low aqueous concentrations and at ordinary temperature the extent of exchange of ions in exchanger coloumn is (a) Li   Na   NH 4  K   Rb   Cs  (b) Li  Na  NH4  K   Rb  Cs

44.

(d) Li  Na   NH 4  K   Rb  Cs (c) Li   Na   NH 4  K   Cs   Rb  Correct statement(s) regarding Uranium is (1) most stable oxidation state of Uranium is +6 (2) in uranocene its oxidation state is +4 (3) in UO 2 colour is due to LMCT (4) Electronic configuration of Uranium corresponds  Rn  5f 3 6d17s 2 (a) 1, 2 (b) 1, 2, 4 (c) 1, 2, 3, 4

(d) 2, 3, 4

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7 45.



In a complex trans- CuX4 Y2  2 the Cu  X bond is larger than that of Cu-Y bond, what is correct electron arrangement of complex 2 2 1   d yz   d xz  2 d x  y  d z 

(b) dxy

2 2 2   d yz   d xz  2 d x  y  d z 

(d) dxy

2

2

2

2

2

2

2

2

2

2 2 2   dyz  dxz 1 dx y  d z 

1

(c) d xy 46.

1 2 2   d yz  dxz 2  dx y   d z 

2

(a) d xy

2

2

2

2

2

Among the following metal oxides conductivity of which oxide corresponds to given molecular orbital energy level diagram. p-band

p

eg

t2g band

d

O2–

M2+ p-band (a) FeO 47.

(c) TiO

(d) NiO

Compound CoCl3.5NH3(A) treated with an excess of AgNO3 solution, two chloride ions are precipitated. A on reaction with NaNO2 gives red colour compound B. Which react with warm HCl turns into yellow colour compound C. The relation between B and C is (a) (b) (c) (d)

48.

(b) MnO

B is octahedral compound while C is tetrahedral compound C is octahedral compound while B is tetrahedral compound B and C are constitutional isomers B and C are geometrical isomers

Consider the following reactions NH 4Cl K or NaN 3 S2 Cl2  B   A 

Ag wool, 450 K (C)

Correct statement regarding above is/are B  S3N 3

C  SN  x

(2) A  S 3N 3Cl 3 B  S 4N 4

C  SN  x

(1) A  S 4N 4

(3) B is aromatic in nature and has 10  electrons.

49.

(4)  SN x is one dimensional metal (a) 1, 4 (b) 2, 3, 4 The number of isomer for P4N4Cl5F3 are (a) 3 (b) 4

(c) 2, 4

(d) 1, 3, 4

(c) 5

(d) 10

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8 50.

XeF4 on complete hydrolysis produces (a) XeO2

(b) XeO3, O2

(c) XeO3, Xe and O2 (d) XeO3, XeO and O2

51.

Correct statement(s) regarding alkali metal in liq. NH3 solution (Dilute) is/are (1) Blue colour of solution is due to ammoniated cation (2) Density of solution is more than density of liq. NH3 (3) On evapouration of NH3 pure metal can be obtained (4) High conductivity of solution is largely due to ammoniated electron (a) 1, 2, 3, 4 (b) 3, 4 (c) 2, 4 (d) 1, 4

52.

For the complexes CoL6 3 , CrL6 3 ,  MnL6  3 and  CrL6  2 (where L is a neutral monodentate









ligand), 0 and P values are given in the following table. S.No. Complex

i  ii  iii  iv 

CoL6 3  CrL 63  MnL 6 3  CrL6 2 

The correct answer is (a) i, ii inert and iii, iv labile (c) All are labile 53.



0 cm1

 P  cm  1

16500

14000

11500

13500

13500

12500

13000

12000

(b) i, ii, iii inert and iv labile (d) All are inert.

FeCp 2  HF  A and Ni  Cp 2  HF  B The product A and B, respectively (a) A   FeCp2 H  , B   NiCp2 H  





(b) A  FeCp 4 C 5H 6  , B  NiCp 2H 



4 4 (c) A   FeCp   C5 H6  , B   NiCp   C5 H6  

 4 (d) A  FeCp 2H  , B   NiCp   C5H 6 

54.





The electron count, formal oxidation state, and dn configuration of following respectively are 

  R3 P 3 Ru  µ  Cl 3 Ru  PR3  3  , Re H92 , Me Re O3   – 0 (a) 16 e (VII), d (b) 16e– (VII), d5 – 0 (c) 18e (VII), d (d) 18e– (VIII), d0

55.



The number of possible isomers for complexes  Cr O  phen  NH3 2 Cl2  and  Pt  bipy 2 BrCl  respectively are (a) 3 and 2

56.

(b) 4 and 2

(c) 4 and 3

2

(d) 3 and 3

Select the correct statement(s) from following (1) Blue copper proteins are not always blue (2) The toxicity of CO is associated with binding to haemoglobin but that of CN– is not (3) Coenzyme B12 reduces –CH(OH) group to –CH2 group (4) Cadmium toxicity leads to a disease called Hai Itai (a) 1, 4 (b) 1, 2, 3, 4 (c) 3 and 4 (d) 2, 3 and 4 South Delhi : 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 North Delhi : 33-35, Mall Road, G.T.B. Nagar (Opp. Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255

9 57.

Blue copper proteins consist of mon-nuclear copper center bound to 2 imidazole groups (histidine), one thiol group (cysteine) and one thioether group (methionine). The coordination geometry around the metal ion is distorted tetrahedral. What will be the relative value of the redox potential of the metal centre

 Cu

2



/ Cu in

the protein compared to that of CuSO4 in water? (a) More positive (b) More negative (c) Equal (d) Redox potential of the metal centre in the protein will be zero. 58.

59.

Identify the acids in the following two reactions: NOF + ClF3 = NO + ClF4– XeO3 + OH– = HXeO4– (a) ClF3 and XeO3 (c) NOF and OH– The term symbol not possible for B2 is (a) 3  g

60.

(b) ClF3 and OH– (d) NOF and XeO3

(b) 1 g

(c) 1 g

(d) 1 u

Choose the incorrect order of given properties (a) BeCl 2  LiCl

 Electrical conductivity 

(b) NaF  MgF2  AlF3

Covalent character 

(c) BeSO 4  MgSO 4  CaSO4  Thermal stability (d) HgCl2  HgBr2  HgI2

Solubility order 

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10 Space for rough work

South Delhi : 28-A/11, Jia Sarai, Near-IIT Hauz Khas, New Delhi-16, Ph : 011-26851008, 26861009 North Delhi : 33-35, Mall Road, G.T.B. Nagar (Opp. Metro Gate No. 3), Delhi-09, Ph: 011-65462244, 65662255

11

CSIR-UGC-NET/JRF | GATE CHEMISTRY

Date : 21-11-2017

CHEMICAL SCIENCES TEST SERIES-A ANSWER KEY

PART-A 1. (d)

2. (c)

3. (d)

8. (d)

9. (c)

10. (d)

4. (b)

5. (b)

6. (a)

7. (d)
...