subject code chemical science ch 01 test sereis # 3 · 3. the conductometric titration of strong...

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1. This test paper has a total of 50 questions carrying 100 marks. The

entire question paper is divided in two sections, A and B. All sections are

compulsory. Question in each section are different type.

2. Read the Questions carefully and mark your appropriate response to the

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UGC POINT ACADEMY LEADING INSTITUE FOR CSIR-JRF/NET, GATE & JAM

BOOKLET CODE SUBJECT CODE

CHEMICAL SCIENCE

Physical – Chemistry

Date: 27/11/2015 Timing: 2:00 H Maximum Marks: 100

TEST SEREIS # 3

01 CH

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1. Electrolysis of 3AgNO with Cu Anode and Ag cathode in aqueous medium given

(1) 3 2Cu NO at cathode and Ag at anode

(2) 3 2Cu NO at anode and Ag at cathode

(3) Ag at anode and Ag at cathode

(4) Cu at anode and Ag at cathode

2. For a cell

2 1 2 2, ||HPt H g HCl a Cl a H g Pt

EMF of the cell with liquid junction potential is given as (WOLJP stands without liquid junction

potential)

(1) 2 cellt E WOLJP (2) cellt E WOLJP

(3) 2 cellt E WOLJP (4) cellE WOLJP

3. The conductometric titration of strong base v/s weak acid, was performed in a normal condition and

graph is plotted molar conductance and weak acid, the nature graph is

mm

m m

4. For a galvanic cell is temperature coefficient i.e, P

E

T

is positive then the correct statement is

(1) As the temperature increases the cell will behave as endothermic cell

(2) As the temperature increases the cell will behave as exothermic cell

(3) Neither exothermic nor endothermic

(4) Enthalpy does not depend upon temperature coefficient

5. The coordinates for the atoms in a face centre unit cell are

(1) 0,0,0 1 2,1 2, 0 (2) 0,0,0 1 2,1 2,1 2

(3) 0,0,1 1,1,0 (4) 0,0,0 1, 1 2,1 2




6. The term symbol of a molecule with electronic configuration 2 22 2 1 1

1 1 2 2 1 1g u g u u u

is

(1) 1g (2) 3

g (3) 1

g (4) 3

g

7. The microwave spectrum of a molecule yields three rotational constant. The molecule is

(1) Prolate symmetric top (2) spherical top

(3) Asymmetric top (4) oblate symmetric top

8. If vibration frequency of C O is 12100 cm . The stretching frequency of C O is

(1) 11714 cm (2) 11614 cm (3) 11400 cm (4) 11500 cm

9. The approx value of equilibrium constant for a given electrochemical reaction is

3 22aq

Fe Sn aq ⇌ 2 42Fe aq Sn aq

0 3 2

0 4 2

/ 0.77

/ 0.15

E Fe Fe

E Sn Sn

(1) 2010 (2) 3010 (3) 2010 (4) 4010

10. The EMF of the given cell at 25o C is 0.445 V

2 2 2, 1 | || . | |Pt H atm H test solution KCl sat solution Hg Cl Hg.

The pH of the unknown solution is;

(1) 3.0 (2) 4.5 (3) 3.44 (4) 6.7

11. The pH of (2m) ammonium chloride, if the dissociation constant for ammonia is 51.80 10 , is

(1) 4.47 (2) 3.47 (3) 6.27 (4) 5.5

12. The Langmuir adsorption isotherm is given as 1

p

p

K

K

, where P is the pressure of the adsorbate

gas. The Langmuir adsorption isotherm for a diatomic gas A2 undergo dissociative adsorption is

(1) 1

p

p

K

K

(2)

2

1 2

p

p

K

K

(3)

2

2

1

p

p

K

K

(4)

1/2

1/2

1

p

p

K

K

13. As the temperature increases the 1 2t of a reaction is

(1) Increases (2) decrease (3) constant (4) None of these

14. The number of moles of HCl g produced by the adsorption of one joule of radiant energy of wave

length 480 nm in the reaction 2 2 2H g Cl g HCl g , if the quantum yield of the photochemical

reaction is

(1) 4.0 (2) 40 (3) 0.4 (4) 0.004

15. In the base hydrolysis of a transition metal complex 6

zML

, the slope between 0log /k k and I is

found to be 2.1 . The charge on the complex is

(1) 2.1 (2) 2.1 (3) 3.1 (4) 3.1




16. In the Michaelis-Menton mechanism for enzyme kinetics , the expression obtained as

412

00

101.4 10

V V

E S E

The value of 3K ( 1 1exp ,K mol L S ) and K (Michaeli’s constant 1mol L ) respectively are

(1) 12 41.4 10 ,10 (2) 8 41.4 10 ,10

(3) 8 41.4 10 , 10 (4) 12 41.4 10 , 10

17. The ratio of 1/2t and 3/4t of a nth order reaction is given as

(1)

1

1

2 1

4 / 2 1

n

n

(2)

1

1

2 1

4 1

n

n

(3)

1

1

2 1

4 / 3 1

n

n

(4)

1

1

4 1

2 / 3 1

n

n

18. The mechanism for the decomposition of 2 5N O

2 5 2 2

12

2N O NO O is observed as

The rate of a reaction is dependent to the concentration of

(1) 2 5N O (2) 1/2

2 5N O (3) 2 3NO NO (4) 0

2 5N O

19. Character table of D3h point group is given below

D3h E 2C3 3C2 𝝈h 3S3 3𝝈V

A’1 1 1 1 1 1 1 2 2 2,x y z

A’2 1 1 1 1 1 1 RZ

E’ 2 1 0 2 1 0 (x,y) 2 2 ,2x y xy

A”1 1 1 1 1 1 1

A”2 1 1 1 1 1 1 Z

E” 2 1 0 2 1 0 (Rx, Ry) ,xy xz

Which of the following is incorrect?

(1) "2A is IR active Raman inactive and parallel vibration

(2) E’ is IR active Raman active and perpendicular vibration

(3) Both (1) and (2)

(4) None




20. Change in order on going from A to B

(1) 0 (2) 4 (3) 8 (4) none

21. Process represented by graph a, b, c , d respectively are

dc

b

a

P

V (1) Isochoric , Isothermal , adiabatic, Isobaric

(2) Isobaric , adiabatic, Isothermal, Isochoric

(3) Isobaric, Isothermal , Adiabatic, Isochoric

(4) Isothermal, Isochoric, Isobaric, adiabatic

22. If work done by the system is 300 Joule when 100 Calorie heat is supplied to it. The change in

internal energy during the process is

(1) -200 J (2) 200 J (3) -120 J (4) 120 J

23. Rate constant k varies with temperature as given by equation

1 2000log min 5

kk

T

Consider the following about this equation

(i) Pre-exponential factor is 105

(ii) Ea is 9.212 kCal

(iii) Variation of log k with 1

T is linear

Select the correct statement

(1) i, ii, iii (2) i, iii

(3) ii, iii (4) i, ii

24. The energies of activation for forward and reverse reaction for

2 2A B ⇌ 2AB are 1180kJmol and 1200kJmol respectively. The presence of a catalyst lowers the

activation energy of both forward and reverse reaction by 1100 kJmol . The enthalpy change of the

reaction in the presence of catalyst will be in 1kJmol is

(1) 300 (2) 120 (3) 280 (4) 20

25. Enthalpy change for one mole of ideal gas that expand reversibly & isothermally from 1L to 10L at

400K is

(1) 10.2KJ (2) 5.1KJ (3) 2.5KJ (4) 0




26. Consider the following statement:

a) As atomicity increases value of γ decreases

b) As atomicity increases slope of PV curve decrease

c) Slope of isothermal curve is less than adiabatic PV curve

d) Slope of PV curve is greater for He gas the CO2 gas

(1) (a) is correct

(2) (a) and (b) is correct

(3) (a), (b) and (c) is correct

(4) (a), (b), (c) and (d) is correct

27. Which is incorrect

A. ,

0H P

dS B. ,

0U V

dS C. ,

0S P

dH D. ,

0P T

dG

(1) A only (2) B only (3) C only (4) None

28. Refer C3V character table which one is not correct

(1) 1 1a a transition is z polarized (2) 1a e transition is x polarized

(3) 1a e transition is y polarized (4) 2a e transition is z polarized

29. Refer C2V character table

The function 1 1 2 3 42 2p p p p belongs to

(1) 1A (2) 2A (3) 1B (4) 2B

30. CsCl has BCC arrangement and its unit cell edge length is 400 pm. The interionic distance in CsCl is

(1) 346.4 pm (2) 320 pm (3) 110 pm (4) 300 pm

31. The lattice parameter of Monoclinic crystal is

(1) , , 90 , 90a b c (2) , 90a b c

(3) , , 90 , 90a b c (4) , 90a b c

32. Which of the following statement is true of the reaction, 22NO g ⇋ 22NO g O g . Which

occurs when NO2 is heated

(1) Each mole of 2NO that dissociates produces 2 moles of NO & one mole of O2

(2) If two moles of NO2 are allowed the reach equilibrium, two moles of NO, one mole of 2O will be

produced

(3) For every two molecules of NO2 originally present there will be at equilibrium two molecules of

NO & one molecule of O2

(4) If one mole of NO2is heated in a closed container, there will be present at equilibrium more than

one mole of gas

33. How many moles of electrons mast flow through the voltmeter to deposit 1.9 7 gram of 0Au (At. Wt.

of Au = 197)

(1) 21 10 (2) 22 10 (3)

23 10 (4) 13 10




34. D2d point group contain 5 classes given that there is one 2 dimensional irreducible representation no

of 1D irreducible representation are

(1) 1 (2) 2 (3) 3 (4) 4

35. Which one is incorrect associated Legendre function m

1P cosθ :-

(1) 2 2

3P = 15sin θcosθ (2) 0 2

2

1P = 3cos θ 1

2

(3) 0

1P = sinθ (4) 2 2

2P = 3sin θ

36. Correct spherical harmonics, m

1 θ, for Li++ is:-

(1) 2 2

2 sin cos ie (2) 2 2 2

2 sin ie

(3) 1

2 sin cos ie (4) 1 3

3 3cos 3cos ie

37. Which one is incorrect graph for 1s Atomic Orbital of H-atom

38. What are the selection rules for a harmonic oscillator to show vibrational spectrum

(1) v 0, 1 (2) v 1 (3) v 0, 1, 2, 3 (4) v 1, 2, 3

39. The selection rules for the appearance of P-branch in the rotational vibrational absorption spectra of

di-atomic molecule within rigid-rotor harmonic oscillator model is

(1) v 1& J 1 (2) v 1,& J 1

(3) v 1& J 1 (4) v 1& J 1

40. According to second law of thermodynamics

(a) State of entropy is the most stable state for an isolated system

(b) In an adiabatic process the entropy either increases or remains unchanged.

(c) Energy neither created nor destroyed, it can be transferred from one form to other

(d) Heat can’t pass simultaneously from a colder to a warmer body

(1) a, c, d (2) a, b, c (3) a, b, d (4) None

41. In the radioactive decay

A A A 4 A 4Z Z 1 Z 1 Z 1

high energy low energy

X Y X Z the sequence of the radiation emitted is:

(1) , , (2) , , (3) , , (4) , ,

42. Graph between logx

mand log p is a straight line at angle of 45o with intercept 2 unit on Y axis. The

amount of gas adsorbed per gm of adsorbent when pressure is 3atm(n=1)

(1) 0.143 (2) 14.3 (3) 143 (4) 0.0143




43. Identify which of the following operations is not Hermitian?

(1) idx

hd (2)

2

2

dx

di (3)

2

2

dx

d (4) x2

44. For which of the following cell, the standard cell voltage is zero?

(1) Daniel cell (2) concentration cell

(3) electrolytic cell (4) fuel cell

45. A particle of mass m is confined to a square of side length, a its first excited state is

(1) Non degenerate with energy = 2 2h / 4ma

(2) Two fold degenerate with energy = 2 25h / 8ma

(3) Two fold degenerate with energy = 2 23h / 8ma

(4) Non – degenerate with energy = 2 25h / 8ma

46. The criterion for the spontaneity of a process is

(1) ∆Ssys > 0 (2) ∆Ssurr > 0

(3) ∆Ssys +∆Ssurr > 0 (4) ∆Ssys - ∆Ssurr > 0

47. Which of the following statements is incorrect regarding physisorption?

(1) it occurs because of van der Waal’s forces

(2) more easily liquefiable gases are adsorbed readily

(3) under high pressure it results into multi molecular layer on adsorbent surface

(4) enthalpy of adsorption (∆Hadsorption) is low and positive

48. For allene radical( 22 HCCHCH ) the secular determinant (where α, β and E have their usual

meanings) is given by

(1)

E

E

E

0

0

(2)

E

E

E

0

0

00

E 0

(3) E 0

0 0 E

E 0

(4) E

0 E

49. Select the incorrect statement.

(1) Physical adsorption is reversible while chemical is irreversible.

(2) High pressure favours physical adsorption while low pressure favours chemical adsorption.

(3) Physical adsorption is specific while chemical is specific.

(4) High activation energy is involved in chemical adsorption.

50. Consider an electron in a one dimensional box. The length a = 2.0nm. The wave function is

2 3

3 1x

4 4 where n

2 n xx sin

a a

is an eigen function of the Hamiltonian.

The set n is orthonormal calculate the energy of x (i.e. < H>). Give the energy.

(1) 1

21E

4 (2) 15.25E (3)

207.91x10 J (4) All the above




Referred Character table




ANSWER KEY ………….

CHEMICAL SCIENCE

Physical – Chemistry

1.(2) 2.(1) 3.(2) 4.(1) 5.(1) 6.(2) 7.(3) 8.(1) 9.(1) 10.(3)

11.(1) 12.(4) 13.(2) 14.(1) 15.(1) 16.(3) 17.(3) 18.(1) 19.(4) 20.(3)

21.(3) 22.(4) 23.(1) 24.(4) 25.(4) 26.(4) 27.(4) 28.(4) 29.(2) 30.(1)

31.(2) 32.(4) 33.(1) 34.(4) 35.(3) 36.(2) 37.(4) 38.(2) 39.(3) 40.(3)

41.(4) 42.(1) 43.(2) 44.(2) 45.(2) 46.(3) 47.(4) 48.(1) 49.(2) 50.(4)

TEST SEREIS # 3


subject code chemical science ch 01 test sereis # 3 · 3. the conductometric titration of strong...

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