10th Chemistry SHP Question paper 28-43

28Narayana Group of Schools

CHEMISTRY_SIMPLE HOLIDAY PACKAGEClass - X_E4-E6

SIMPLE HOLIDAY PACKAGECLASS-Jr_X_(E4 to E6)

COLLIGATIVE PROPERTIES1. On mixing, heptane and octane form an ideal solution. At 373K, the vapour

pressures of the two liquid components (heptane and octane) are 105 kPaand 45 kPa respectively. Vapour pressure of the solution obtained by mixing25.0g of heptane and 35g of octane will be (molar mass of heptane = 100g

1mol and of octane = 114g 1mol )

1) 72.0 kPa 2) 36.1 kPa 3) 96.2 kPa 4) 144.5 kPa2. The vapour pressure of a dilute aqueous solution of glucose is 750 mm of Hg

at 373 K. The mole fraction of solute is :

1) 1

10 2) 1

7.6 3) 135 4)

176

3. For an ideal binary liquid solution with 0 0A BP P which among the following

relation is correct for AX (mole fraction of A in liquid plane) and AY (molefraction of A in vapour phase)is correct?

1) A BY Y 2) A BX X 3) A A

B B

Y XY X

4) A A

B B

Y XY X

4. 100 g of liquid A (molar mass 140 g mo1-1) was dissolved in 1000 g of liquid B(molar mass 180 g mol-1). The vapour pressure of pure liquid B was found tobe 500 torr. What will be the vapour pressure of pure liquid A and its vapourpressure in the solution respectively if the total vapour pressure of thesolution is475 torr ?1) 28.7 torr and 32 torr 2) 280.7 torr and 32 torr

3) 28.7 torr and 3.2 torr 4) 280.7 torr and 3.2 torr5. Which of the following is not correct for ideal solution?

1) mixS 0 2) mixH 0

3) It obeys Raoult’s law 4) mixV 0

6. Which of the following pairs form almost ideal solution?

1) 4 4CCl SiCl 2) 6 6 6 5 3C H C H CH 3) 2 6 4C H CCl 4) Both (1) and (2)

7. Which of the following pair shows positive deviation from Raoult’s law?

1) 2 4 2 2 4 2C H Br C H I 2) 4 6 5 3CCl C H CH 3) Both a & b 4) 5 5HCOOH C H N



8. Two liquids X and Y are perfectly immiscible. If X and Y have molecularmasses in ratio 1:2, the total vapour pressure of a mixture of X and Y prepared

in weight ratio 2 : 3 should be ( 0Xp = 400 torr, 0

Yp =200 torr)

1) 300 torr 2) 466.7 torr 3) 600 torr 4) 700 torr9. y g of a non -volatile organic substance of molecular mass M is dissolved in

250g benzeneMolal elevation constant of benzene is bK . Elevation in itsboiling point is given by :

1) b

MK y 2)

4 bK yM 3) 4

bK yM 4) bK y

M10. When 10.8 g glucose is dissolved in 240g water, its boiling point elevates

by 0.130C. Calculate molar elevation constant of water1) 5.20 2) 0.52 3) 52.0 4) 0.052

11. A solution of 2.5g non-volatile solute in 100g benzene boils at a highertemperature of 0.420C than boiling point of pure benzene. Calculate molecularmass of the solute. Molal elevation constant of benzene is 2.67.1) 185.93 2) 168.39 3) 158.93 4)139.28

12. When 2.56g of an element is dissolved in 100 gram of carbon disulphide,boiling point is elevated by 0.240C. Find out atomicity of the element. Boilingpoint of CS2 is 460C and its heat of vapourization is 84 calorie/g [molecularweight of element 32]1) 6 2)8 3)10 4)12

13. In the depression of freezing point experiment, it is found that(i) The vapour pressure of the solution is less than that of pure solvent(ii) The vapour pressure of the solution is more than that of pure solvent(iii) Only solute molecules solidify at the freezing point(iv) Only solvent molecules solidify at the freezing point1) I, II 2) II,III 3)I,IV 4) I,II,III

14. Which of the following is a better reagent for depression in freezing pointbut not for elevation of boiling point?

1) 3CH OH 2)

CH2OH

CHOH

CH2OH3)

CH2OH

CH2OH4) 6 12 6C H O

15. The tempearature of a city was found to be 09.3 C .A car was used, whoseradiator was filled with 5L of water .What quantity of antifreezing agentethylene glycol were added to water of radiator in order to use the car for

traveling? 1fK of water 1.86 K kg mol

1) 3200 g 2) 1670 g 3) 1550 g 4) 2100 g16. The boiling point of an aqueous solution of a non-volatile solute is 0100.15 C

What is the freezing point of an aqueous solution obtained by diluting theabove solution with an equal volume of water? The values of b fK and K for

water are 00.512 C and 01.86 C K 1molality :

1) 00.544 C 2) 00.512 C 3) 00.272 C 4) 01.86 C



17. The osmotic pressure of blood is 8.21 atm at 310K. How much glucoseshould be used per L for an intravenous injection that is isotopic with blood?1)25.87 2)32.06 3)58.06 4)48.06

18. At 100C the osmotic pressure of urea solution is 500 mm of Hg .The solutionis diluted and the temperature is raised to 250c. When the osmotic pressureis found to be 105.3 mm of Hg. Determine extent of dilution1) Two times 2) Three times 3) Four times 4) Five times

19. A 3.42% (wt./vol) solution of cane sugar is isotonic with a 5.96% (wt./vol.)solution of raffinose. The molecular weight of raffinose is :1) 59.6 2) 596 3) 5.96 4) 5960

20. Insuline 2 10 5 nC H O is dissolved in a suitable solvent and the osmotic pressure

of soluion of various concentrations 3/g cm C is measured at 020 C .

The slope of a plot of against C. is found to be 34.65 10 . The molecularweight of insulin is :

1) 54.8 10 2) 59 10 3) 53 10 4) 65.17 10

21. The degree of dissociation of a weak electrolyte, x yA B is related to van’tHoff factor (i) by the expression:

1) 1

1x y

i

2)

11

x yi

3)

11

ix y

4)

11

ix y

22. When 20 g of naphtholic acid 11 8 2C H O is dissolved in 50 g of benzene

1fK 1.72 K kg mol freezing point depression of 2K is observed . The Van’t

Hoff factor(i) is1) 0.5 2)1 3) 2 4) 3

23. The freezing point 0in C of a solution containing 0.1 g of 3 6K Fe CN (Mol.

Wt. 329) in 100 g water 1fK 1.86 K kg mol is

1) 22.3 10 2) 25.7 10 3) 35.7 10 4) 21.2 10

CHEMICAL KINETICS24. Observe the following reaction

3 2g g gA B C

The rate of this reaction d Adt

is -3 -1 -13×10 mole lit min what is the value

of d B-

dt in mole -1 -1lit min ?

1) 33 10 2) 39 10 3) 310 4) 31.5 10



25. Consider the following reaction

)(2)(3)( 322 gNHgHgN

The rate of this reaction in terms of N2 at T(k) is 2 1 10.02 . .sec

d Nmole lit

d t

what is the value of dt

Hd 2 (in units of mole lit-1-sec-1) at the same

temperature.1) 0.02 2) 50 3) 0.06 4) 0.04

26. Reaction of cisplatin with water is shown below:Pt (NH3)2 Cl2(s) + water [Pt (NH3)2Cl]+(aq) + Cl–(aq)

Cisplatin is a complex compound used in treatment of cancer.Some values of the data obtained, from one such experiment are given in thetable

Time in minutes Concentration of cisplastin in moles/litre

0 0.0100 20 0.00970

Find the rate of reaction for the above reaction.1) 1.5×10–5 moles/litre/min 2) 1.5×10–10 moles/litre/min

3) 1.5×10–7 moles/litre/min 4) 1.5×10–6 moles/litre/mi27. The temperature dependence of the rate constant is given by the Arrhenius

equation

1) ln ln /k A Ea RT 2) ln ln /k A Ea RT

3) ln . /k A Ea RT 4) ln ln lnk A RT Ea 28. The correct expression for arrhenius equation showing the effect of

temperature on the rate constant is 2 1T T

1) 2 1 2

101 2 1

K T TEalogK 2.303R T T

2) 2 2 1

101 a 2 1

K T TRlogK 2.303E T T

3) 2 1 2

101 2 1

K T TEalogK R T T

4)

2 2 110

1 2 1

K T TEalogK 2.303R T T

29. The rate of reaction becomes 2 times for every 10°C rise in temperature.

How the rate of reaction will increase when temperature is increased from30°C to 80°C.1) 16 2)32 3) 64 4) 128

30. For a reaction 2A + B C + D

2d AK A B

dt . The expression for

d Bdt

will be

1) 2K A B 2) 21 k A B2

3) 2k A 2B 4) k 2A B



31. For the reaction, 2 5 2 21N O 2NO O ,2

Given 2 5 1 2 5d N O R N Odt

2 2 2 5 2 3 2 5d dNO R N O O R N Odt dt

The relation between R1R2 and R3 is

1) 2R1=R2=4R3 2) R1=R2=R3 3) 2R1=4R1=R3 4) None32. In the reaction between A and B the rate of the reaction is determined with

different concentrations of A and B the following data is obtained[A] [B] Ratemole/lit mole/lit

0.01 0.01 0.005

0.02 0.01 0.010

0.01 0.02 0.005The rate equation of the reaction is1) Rate =K[A][B] 2) Rate=K[A]2 3) Rate=K[A] 4) Rate=K[B]

33. Forthe reaction, A B products, rate isgiven as, 2rate K A B . How willthe rate change if volume of the reaction mixture is reduced to 1/3rd of itsoriginal volume?

1) 2 1r 27r 2) 2 1r 16r 3) 2 1r 27/r 4) 2 1r 16/r

34. The decomposition of CH3.CHO occurs as CH3.CHO(g) CH4(g)+CO(g), thekinetic data provided are [CH3CHO] rate(moles.lit-1.sec-1)

1.75 x 10-3 2.06 x 10-11

3.5 x 10-3 8.25 x 10-11

7.0 x 10-3 3.30 x 10-10

The rate expression thus can be given as

1) K[CH3.CHO] 2) K[CH3.CHO]2 3) K[CH3.CHO]3 4) K[CH3.CHO]1/2

35. For a given reaction of first order, it takes 20 min for the cocentration todrop from 1.0 M to 0.6 M. The time required for the cocentration to drop from0.6 M to 0.36 M will be1) more than 20 min 2) less than 20 min3) equal to 20 min 4) infinity

36. For a given first order reaction

/ Cu2N Cl

(A)

2Cl N

After 10 minutes volume of N2 gas is 10 L and after completion of reaction 50L. Hence, rate constant is :

1) 12.303 log5min10

2) 12.303 log1.25min10

3) 12.303 log 2min10

4) 12.303 log 4 min10



37. For the zeroth order reaction, sets I and II are given, hence x is :

I :

t = 0 t = 2 min

II :t = 0 t = x min

1) 2 min 2) 3 min 3) 4 min 4) 6 min

38. The radioactive isotope 32 P decays by first order kinetics and has a half-lifeof 14.3 days. How long does it take for 95.0% of a given sample of 32 P todecay?1) 21 days 2) 42 days 3) 62 days 4) 80 days

39. 20% decomposition of H2O2 in presence of an acid requires 5 min. The timerequired for 50% decomposition in minutes is

1) 15.52 2) 1.552 3) 0.1552 4) 7.76

40. The reaction, 2A B Products, follows the mechanism

22A A

2A B Products (Slow) The order of the reaction is

1) 2 2) 1 3) 3 4) 112

41. The hydrolysis of ethyl acetate 3 2 5 2 3 2 5HCH COOC H H O CH COOH C H OH

is areaction of1) Pseudo first order 2) Second order3) Third order 4) Zero order

42. Which statement is correct ?1) Molecularity of a reaction is same as the order of reaction2) In some cases order of reaction may be same as the molecularity of thereaction3) Molecularity may be zero

4) Molecularity may be fractional

43. What is the activation energy for the decomposition of 2 5N O as,

2 5 2 2122

N O NO O

if the values of the rate constants are 53.45 10 and 36.9 10 at 027 C and067 C respectively?

1) 112.5 kJ 2) 200 kJ 3) 149.5 kJ 4) 11.25 kJ44. Given that the temperature coefficient for the saponification of ethyl acetate

by NaOH is 1.75. Calculate the activation energy. O O1 2T 25 CandT 27 C

1) 1.0207 kcal 2) 10.207 kcal/mol.3) 1.0207 cal 4) 10.207 cal/mol.



45. From the graph pickout the correct one

E A

Reaction coordinate

B

C

1) E for forward reaction is B-A 2) E for the forward reaction C-A3) E of reverse reaction is C-A 4) None of these

ACIDS, BASES AND SALTS46. Which of the following species is an acid and also a conjugate base of another acid?

1) 4HSO 2) 2 4H SO 3) 2O 4) 3H O

47. Which of the following is not an acid according to lewis theory?

1) 42H SO 2) 3SO 3) 3Alcl 4) 3BF

48. In the reaction 2 32H O H O OH , water is :1) A weak base only 2) A weak acid only3) Both a weak acid and a weak base 4) Neither an acid nor a base

49. Which of the following is not Lewis base?1) CH4 2) C2H5OH 3) Acetone 4) Sec. Amine

50. Urine normally has a pH of 6. If a patient eliminates 1.3 litres of urine perday how many moles of H + ions does he urinate?1) 1.3 x 10-3 2) 1.3 x 10-6 3) 1.3 x 10-7 4) 1.3x106

51. When 1ml of 0.1 N-HCI is added to 1 litre of a solution of pH value 4, the pHwill be nearly1) 5 2) 4.477 3) 3 4) 3.7

52. Equal volumes of two solutions containing 3.65gms of HCl and 4.0 gms ofNaOH respectively are mixed. The pH of the mixture is1) 7 2) <7 3) >7 4) 0

53. 100 ml of a solution of HCl with pH value 3 is diluted with 400 ml of water.The new PH of the solution is1) 3.7 2) 5.3 3) 4.2 4) 5.6

54. Assertion A: PH of pure water increases with increase in temperature.Reason R: Degree of dissociation of water increases with increase intemperature1) ‘A’ and ‘R’ are true, ‘R’ is correct explanation of ‘A’.2) ‘A’ and ‘R’ are true. ‘R’ is not correct explanation of ‘A’.3) ‘A’ is true but ‘R’ is false.4) ‘A’ is false but ‘R’ is true.



55. The pH of 0.5 m aqueous solution of HF 4aK 2 10 is

1) 1 2) 2 3) 3 4) 456. The dissociation of water at 25oC is 71.9 10 % and the density of water is

1gm/cm3the ionisation constant of water is1) 3.42 x 10-6 2) 3.42 x 10-8 3) 1.00 x 10-14 4) 2.00 x 10-16

57. I f pKb for hydrogen fluoride at 250c is 10.83, the ionisation constant ofhydrofluoric acid in water at this temperature is1) 3.52 × 10-3 2) 6.75 × 10-4 3) 5.38 × 10-2 4) 1.74 × 10-5

58. A basic buffer solution contains a weak base B and its conjugate acid BH .On adding some HCl , which of the following reactions takes place to maintainconstant HP ?

1) BH B H 2) 2B H O BH OH

3) 2 0H OH H 4) 2BH OH B H O 59. 100 ml of 0.3N-Acetic acid solution is mixed with same volume of 0.2 N

sodium hydroxide solution. Ionisation constant of acetic acid is 2x10-5 ThepH of the mixture is1) 10 2) 7 3) 5 4) 9.

60. The bK of weak base is 410 . the [ ] [ ]salt to base ratio to be maintained to keep

is the HP of buffer solution as 9 is.1) 1:4 2) 4:2 3) 1:10 4) 10:1

61. pKa (CH3COOH) is 4.74. x mol of lead acetate and 0.1 mol of acetic acid inone L solution make a solution of pH = 5.04. Hence, x is :1) 0.2 2) 0.05 3) 0.1 4) 0.02.

62. The following pH range where the indicator shows change in colour aregiveni. 4 – 9.7 ii. 7.46 – 10.0 iii. 6.5 – 4which of the above pH range represent titration ofI. Strong acid/strong base (SA/SB)II. Weak acid/ strong base (WA/SB)III. weak base/strong acid (WA/SA)

1) , ,i I ii II iii III 3) , ,iii I ii II i III

2) , ,ii I iii II i III 4) , ,i I iii II ii III

63. A certain weak acid has a dissociation constant 1.0x10-4. The equilibriumconstant for its reaction with a strong base is1) 10-4 2) 10-10 3) 1010 4) 10-14

64. 0.1M NaOH is titrated with 0.1MHA till the end point. Ka of HA is 5.6x10-6

and degree of hydrolysis is less compared to 1. The pH of the resultingsolution at the end point is1) 8.975 2) 5.025 3) 9.45 4) 6.92

65. The pH of an aqueous solution of 1.0M ammonium formate is (assumingcomplete dissociation) [pKa(HCOOH)=3.8; pKb(NH4OH)= 4.8]1) 3.8 2) 4.8 3) 6.5 4) 8.25



66. Calculate the pH at which an acid indicator with 5aK 1.0 10 changes

colour when the indicator is 31.00 10 M.1) pH = 2.00 2) pH = 3.00 3) pH=4.00 4)pH=5.00

67. At what pH will a 31.0 10 M solution of an indicator with 10bK 1.0 10

change colour?1)pH=4.00 2) pH = 3.00 3) pH=2.00 4)pH=5.00

68. A certain monoprotic acid (weak) serves as indicator. Assuming that colourchange is seen when 1/3rd of the indicator has been converted in to ionsand that at end poin t the PH of solution is 6, the value of pKIn1) 7.3 2) 8.3 3) 5.3 4) 6.3

69. During the titration of a weak diprotic acid 2H A against a strong base

NaOH , the pH of the solution at half –way to the first equivalent point andat the first equivalent point are givenrespectively by :

1) 1 1 2a a apK and pK pK 2) 1 2

1 2a a

a

pK pKK c and

3) 1 2

1 2a a

a

pK pKpK and

4)

1 2a apK and pK

70. The molar solubility of 3( )M OH in 0.4 M 3 3M NO solution interms of

solubility product of 3( )M OH

1) 1/3( /10.8)spK 2) 1/ 3( / 3.6)spK 3) 1/ 4( /10.8)spK 4) 1/3( / 0.4)spK

71. In a saturated solution of calcium phosphate, the concentration of 34PO ion

is 73.3 10 M . The Ksp of Ca3(PO4)2 will be1) 311.32 10 2) 321.32 10 3) 331.32 10 4) 351.32 10

72. The pH of Mg(OH)2 is 10.45 at 250C. The solubility product of Mg(OH)2 wouldbe1) 11 32.24 10 M 2) 11 33.36 10 M 3) 11 31.12 10 M 4) 12 35.60 10 M

73. Let the solubilities of AgCl in 2H O . 0.01M 2CaCl , 0.01M NaCl and 0.05M

3AgNO be 1 2 3 4, ,S S S and S respectively. What is the correct relationshipbetween these quantities?1) 1 2 3 4S S S S 2) 1 2 3 4S S S S 3) 1 3 2 4S S S S 4) 4 2 3 1S S S S

74. The HP of saturated aqueous solution of 2( )Ba OH is 10. If the spK of

2( )Ba OH is 135 10 , then the concentration of 2Ba ions in the solution is

1) 51 10 2) 31 10 3) 55 10 4) 21 10

75. A solution which is 310 M each in 2Mn , 2Fe , 2Zn and 2Hg is treated

with 610 M sulphide ion. If spK of MnS , FeS , ZnS and HgS are1510 , 2310 , 2010 and 5410 respectively. Which of the following will be

precipitated first?1) Zns 2) FeS 3) MnS 4) HgS



THERMOCHEMISTRY76. H U for the formation of carbon monoxide (CO) from its elements at

298 K is:1) –123.8.78 Jmol– 2) 1238.78 Jmol– 3) –2477.57 Jmol– 4) 2477.7 mol–

77. The heat of reaction 2 2N O 2NO at constant volume is –180.8 KJ. Thenheat of reaction at constant pressure is1) 180.8 KJ 2) –180.8 KJ 3) 90.4 KJ 4) –90.4 KJ

78. When water is added to quick lime, the reaction is1) explosive 2) endothermic 3) exothermic 4) photochemical

79. Which of the following is an endothermic reaction?

1) 2 2C O CO 2) 2 2N O 2NO 3) 2 2 33H N 2NH 4) 3 2 5PC C PC l l l80. The heats of combustion of C2H4 , C2H6 and

H2 gases are -1409.5 KJ, -1558.3 KJ and -285.6 KJ respectively. The heat ofhydrogenation of ethene is1) -136.8 KJ 2) -13.68 KJ 3) 273.6 KJ 4) 1.368 KJ

81. Given the enthalpy of formation of CO2 (g) is–94.0 KJ, of CaO (s) is -152 KJ, and the enthalpy of the reaction CaCO3 (s) CaO (s) + CO2 (g) is 42 KJ, the enthalpy of formation of CaCO3 (s) is1) -268 KJ 2) +202 KJ 3) -202 KJ 4) -288 KJ

82. Calculate the heat of combustion (in KJ) of methane from the following datai) C (graphite) + 2H2 (g) CH4 (g), H = -74.8 KJii) C (graphite) + O2 (g) CO2 (g), H = -393.5 KJi i i ) H2 (g) + 1/2O2(g) H2O (l), H = -286.2 KJ.1) -891.1 2) -816.3 3) -965.9 4) -1040.7

83. The combustion of one mole of benzene takes place at 298K and 1 atm after

combustion 2( ) 2 ( ),g lCO and H O are produced and 3267.0 KJ of heat is liberated

. Calculate the standard enthalpy of formation fH of benzene . Standard

enthalpy of formation of 2( )gCo and 2 ( )lH O are -393.5KJ and –285.83 KJ/Mole1) -48.51 KJ/mole 2) 48.51 KJ/mole 3) –24.5KJ/mole 4) 24.5KJ/mole

84. Given H°ionization (HCN) = 45.2 kJ mol–1 and Hionization (CH3COOH) = 2.1 k Jmol–1. Which one the following is true ?

1) pka (HCN) = pka (CH3COOH)

2) pka (HCN) > pka (CH3COOH)

3) pka (HCN) < pka (CH3COOH)

4) pka (HCN)=(45.17/2.07) pka (CH3COOH)85. A solution of 500 ml. of 0.2 M KOH is mixed with 500 ml of 0.2 M HCl stirred

and the raise in temperature T1 is recorded. The experiment is repeatedusing 250 ml. of each solution and raise the temperature T2 is recorded.Which of the following statement is true?1) T1 = T2 2) T1 = 2T2 3) T1 = 4T2 4) T2 = 2T1



86. The standard enthalpy of formation 0f H at 298K for methane, 4CH g is

74.8 KJ 1mol . The additional information required to determine the averageenergy for C-H bond formation would be [1) the first four ionization energies of carbon and electron gain enthalpy ofhydrogen

2) the dissociation energy of hydrogen molecule, 2H

3) the dissociation energy of 2H and enthalpy of sublimation of carbon

4) latent heat of vapourization of methane 87. Heat of neutralisation of HF is

1) 57.32KJ 2) >57.32KJ 3) <57.32KJ 4) None of these

88. The standard enthalpy of formation of 3NH is 146.0kJ mol .If the enthalpy of

formation of 2H from its atoms is 1436kJ mol and that of 2N is 1712kJ mol ,

the average bond enthalpy of N - H bond in 3NH is

1) 1964kJ mol 2) 1352kJ mol 3) 11056kJ mol 4) 11102kJ mol

89. On the basis of the following thermochemical data : 0 0aqfG H

2 ; 57.32H O l H aq OH aq H kJ

2 2 21 ; 286.202

H g O H O l H kJ

The value of enthalpy of formation of OH ion at 025 C is

1) -22.88kJ 2) -228.88kJ 3) +228.88kJ 4) -343.52kJ

ELECTRO CHEMISTRY90. Which of the following on electrolysis would, not evolve oxygen at the anode?

1) Dilu te H2SO4 with Pt electrodes2)Aqueous silver nitrate using Pt electrodes3) Aqueous Na2SO4 with Pt electrodes4) 50% H2SO4 with Pt electrodes

91. During the electrolysis of aqueous solution of sodium chloride,pH of theelectrolyte1) Remains constant 2) Gradually increases3) Gradually decreases 4) Decreases first and then increases.

92. The passage of current through a solution of certain electrolyte results inthe evolution of H2 (g) at cathode and Cl2 (g) at anode. The electrolyticsolution is1) Water 2) aq.H2SO4 3) aq.NaCl 4) aq.CuCl2

93. Which of the following aq. solution produces metal after electrolysis?1) K2Cr2O7 2) KMnO4 3) CH3COONa 4) CuCl2



94. Aluminium oxide may be electrolysed at 01000 C to furnish aluminium metal(Atomic mass = 27 amu, 1 Faraday = 96,500 Coulombs). The cathode reactionis 3+ -Al +3e Al To prepare 5.12 kg of aluminium metal by this methodwould require

1) 15.49×10 Cof electricity 2) 45.49×10 Cof electricity

3) 71.83×10 C of electricity 4) 75.49×10 Cof electricity95. A quantity of electrcity required to reduce 12.3 g of nitrobenzene to aniline

arising 50% current efficiency is 1) 1158000C 2) 579000C 3) 231600C 4) 289500C96. Three faradays of electricity are passed through molten Al2O3,aqueous

solution of CuSO4 and molten NaCl taken in three different electrolyticcells. The amount of Al, Cu and Na deposited at the cathodes will be in theratio of1) 1 mole :2 mole :3 mole 2) 1 mole:1.5 mole :3 mole3) 3 mole :2 mole :1 mole 4) 1 mole :1.5 mole :2 mole

97. The variation of m of acetic acid with concentration is correctly representedby

1) 2) 3) 4)

98. Equivalent conductance at infinite dilution of 2 2 4,BaCl H SO and HCl aqueous

solutions are 1 2 3,x x and x respectively. Equivalent conuctance of 4BaSOsolution is

1) 1 2 3x x x 2) 1 2 3x x x 3) 1 2 32x x x 4) 1 2 32x x x

99. Which of the following represents increasing order of ionic conductance atinfinite dilution ?

1) F CI Br I 2) I Br F Cl3) F CI I Br 4) F I CI Br

100. The equivalent conductances of two strong electrolytes at infinite dilution

at 25 0 C are given below :3

0 2CH COONa

0 2HCl

91.0 S cm / equiv426.2 S cm / equiv

What additional information / quantity one needs to calculate 0 of anaqueous solution of acetic acid ?

1) 0 of chloroacetic acid 2(ClCH COOH)

2) 0 of NaCl

3) 03of CH COOK

4) The limiting equivalent conductance of 0HH ( )



GENERAL ORGANIC CHEMISTRY (PART-1)101. Which of the following is an aromatic compound?

1) Benzene 2) Anthracene 3) Naphthalne 4) All are aromatic102. Which of the following is not a carbocyclic compound?

1) Cyclopentane 2) Naphthalene 3) Thiophene 4) Benzene

103. contains how many hydrogen atoms

1) 13 2) 12 3) 24 4) 14104. Heterocyclic compounds are ........ in nature

1) Aliphatic 2) Aromatic3) Aliphatic or Aromatic 4) Inorganic

105. Which of the following compounds does not have any tertiary hydrogen atoms1) (CH3)3CCH2CH3 2) (CH3)2CHCH2CH33) (CH3)2CHCH(CH3)2 4) (CH3)3CH

106. The number & type of carbon atoms present in neopentane are1) four 10 carbons , one 40 carbon 2) two 10carbons , two 20 carbons3) one 10 carbon , one 40 carbon 4) one 10 carbon , one 40 carbon

107. Which of the following statement is incorrect?1) - CH2 - contains secondary carbon atom2) IUPAC names depend on structure3) Root word indicates number of carbon atoms in the parent chain4) Sum of numbers indicating position of substituents must be minimum inIUPAC system.

108. The IUPAC name of the compound is 3 2 2 3

3 52CH C H| |

CH - CH - CH- CH -CH - CH - CH

C CH3

CH3

H3C3 2 2 3

3 52CH C H| |

CH - CH - CH- CH -CH - CH - CH

C CH3

CH3

H3C

1) 4 – (1, 2 – Dimethyl ethyl) – 5 – ethyl (– 2 – methyl octane2)4 – (1, 1 – Dimethyl ethyl) – 3,6 - dimethyl octane.3) 5 – (1, 1 – Dimethyl ethyl) – 6 – ethyl (– 5 – methyl octane4) 4 – (1, 2 – Dimethyl ethyl) – 6 – ethyl (– 4 – methyl octane

109. The IUPAC name of the compound is

3

323 2 2 2

|

H-CH3

CH -CH2 3

|C

3

|

|CH

CHCH3- CHC- CH -CHCH - CH - CH - CH - CH -

1) 2, 2, 5 – trimethyl – 4 – (1 – methyl propyl) hexane2) 2, 2, 7 – trimethyl – 4 – (1 – methyl propyl) hexane3) 2, 2, 7 – trimethyl – 4 – (1 – methyl propyl) nonane4) 2, 2, 5 – trimethyl– 4 – (1 – methyl propyl) oxtane

110. The structure of 3-bromoprop-1-ene is

1) |

3 2

Br

CH C CH 2) 3CH CH CH Br

3) 3|

CH C CH Br

Br

4) 2 2Br CH CH CH



111. The correct decreasing order of priority for the functional groups of organiccompounds in the IUPAC system of nomenclature is1) 3 2-COOH,-SO H,-CONH ,-CHO 2) 3 2-SO H,-COOH,-CONH ,-CHO

3) 3 2-CHO,-COOH,-SO H,-CONH 4) 2 3-CONH ,-CHO,-SO H,-COOH112. Which of the following is Anthracene

1) 2) 3) 4)

113. Which of the following is Phenanthracene?

1) 2) 3) 4)

114. Which of the following structures represents nitrobenzene?

1)

NO2

2) N

3)

NH2

4)

Me

115. Which of the following shows functional isomerism?1) CH3CH2Cl and CH3CH2Br 2) CH3CHBr2 and CH2Br CH2Br3) C2H5O C2H5 and CH 3OC3H 7 4) 3 3CH COCH

116. Cycloalkanes are isomeric with1) Alkadienes 2) Alkynes3) Aromatic compounds 4) Olefins

117. Diethylether and n - propyl methylether are1) Metamers 2) Chain isomerism3) Geometrical isomerism 4) Position isomerism

118. The total number of geometrical isomers possible in following compound is

Ph HC HC- = 3CH CH CH= -

1) 2 2) 1 3) 6 4) 8119. Which of the following statement/s is not true about the following compounds

O

(i)

O

(ii)

O

(iii)

1) (i) and (iii) are identical2) (i) and (iii) are geometrical diastereomers3) (i) & (ii) are structural isomers4) (ii) and (iii) are structural isomers

120. Which of the following compounds hydrocarbons has the lowest dipolemoment?

1) HH

2) CH3–HC=HC–CH3 (trans)

3)CH3–CH2–CH=CH2 4) CH2=CH–CH=CH2



GENERAL ORGANIC CHEMISTRY PART-II121. Among the following which is most stabilised cation?

1) 2) 3) 4)

122. Most stable carbocation among the given example is:

1) 2) 3) 4) 3CH

123. Which carbocation is the most stable?

1) 2)

3) 4)

124. Compare relative stability of the following resonating structure.

1) i ii iii 2) ii i iii 3) i iii ii 4) ii iii i

125. The most stable canonical structure of given molecule is:

1) 2) 3) 4)



126.

The correct stability order of the given canonical structures is:1) I II III 2) III I II 3) I III II 4) II III I

127. Which of the following compound is not resonance stabilized?

1) 2) 3) 4)

128. Identify the compounds which have maximum dipole moment

1)

O

2)

O

3) 4) None of these

129. Rank the following free radicals in order of decreasing stability:

I) 6 5 6 5C H C HC H

II)

6 5 2C H C H CH CH

III) 3 3C H C H C H

IV) 6 5 3C H C H CH

`

V) 3 2 2CH CH CHCH CH

3 2 3

3

VI CH CH C CH

CH

)|

1) I>II>III>IV>V>VI 2) VI>V>IV>III>II>I 3) I>II>IV>VI>III>V 4) I>IV>III>I130. Which of the following molecule has shortest C C bond length?

1) 2 2CH C CH 2) 3 2CH CH CH 3)

3 2

3

CH C CH|CH

4) all of the above

131. Hyper conjugation occurs in

1) 2CH

2)

3) 4) Cl

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10th Chemistry SHP Question paper 28-43