TEST 2 (AIEEE) Dr. Sangeeta Khanna Ph.D CIRCLE INSTRUCTIONS:

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1 INSTRUTINS: TEST (AIEEE) M.MARKS: 50. This test consist of 50 questions.. The test duration is of 90 minutes. 3. Use blue or black ball-point pen to complete darken the appropriate circle.. Fill your particulars correctly and completely on the MR ANSWER SEET. 5. Each right answer carries 3 marks and for every wrong answer mark will be deducted.. Acetanilide on nitration produces a mixture of o- nitroacetanilide (minor product) and p- nitroacetanilide (major product). The constituents of the product mixture are usually separated by a. sublimation b. fractional crystallization c. fractional distillation d. steam distillation. In Lassaigne s test, which of the following organic compounds would produce a blood-red colour when its sodium extract is treated with Fel 3 solution? 6. A solution containing g of anhydrous Bal in 000 c.c. of water has a specific conductivity ohm. The molar conductivity of this solution is about: [M. Wt. of Bal = 08] a. 0. ohm c.c. b.. ohm - c.c. c. 0 ohm c.c. d. ohm c.c. 7. Which of the following pairs of structures do not represent tautomers? a. and a. N b. c. N S 3 b. and d. N S 3 3. The sodium extract of an organic compound on boiling with N 3 and on subsequent treatment with ammonium molybdate solution gives a yellow precipitate. Which of the following elements may be present in the compound? a. Nitrogen b. Sulphur c. Phosphorus d. alogen c. and N d. and Θ N. Which of the following molecules is not stabilized by resonance? a. b. c. = = d. = 5. Give the correct order of decreasing acidity. a. 5 S > 5 > 5 N > 3 3 b. 5 > 5 S > 5 N > 3 3 c. 5 > 5 N > 3 3 > 5 S d. 5 N > 5 S > 5 > 3 3 IRLE 8. Which of the following conformation of, - ethanediol is not able to form intramolecular hydrogen bond? a. b. c. d. EMISTRY AING

2 9. Arrange the following compounds in the order of increasing rate of reaction with l I. II. 3 = 3 III. IV. = 3 a. IV < II < I <III b. III < IV < II < I c. III < I < II < IV d. I < II < III < IV 0. Which of the following is correct Match of list I and List II List I (Test) = = List II (For which compound it is performed) I. Molish test (i) Protein II. Biuret Test (ii) arbohydrates III Acrolein (iii) Nucleic acid test IV Ninhydrin Test (iv) Fats I II III IV a. ii (iii) (iv) (i) b. ii (i) (iv) (i) c. iii (ii) (i) (iv) d. (ii) (iii) (i) (iv) *. = Br aq. K P; P is: * a. = * b. = c. Both (a) and (b) d. None. oupling of diazonium salts with the following, takes place in order: N N 3 (I) (II) (III) (IV) a. IV < II < III < I b. IV < III < II < I c. II < IV < I < III d. I < II < III < IV 3. Which of the following electron transition in a hydrogen atom will require the largest amount of energy? a. From n = to n = b. From n = to n = 3 c. From n = to n = d. From n = 3 to n = 5. What is the wavelength of series limit for Lymen series for hydrogen: a. b. 3R R 5 c. R d. R The least polarized anion is:- a. S b. 3 c. N d. l 6. Which of the following has maximum dipole moment? a. Nl 3 b. NF 3 c. N 3 d. NI 3 7. onsider the following statements:. s + is more highly hydrated than the other alkali metal ions.. Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point. 3. Among the alkali metals only lithium forms a stable nitride by direct combination. f these statements: a., and 3 are correct b. and are correct c. and 3 are correct d. and 3 are correct 8. Which of the following exhibit trigonal bipyramidal geometry?. BrF. = SF 3. SF. Xe 5. + XeF 5 a.,, 5 b.,, 3 c., 3, 5 d., 3, 9. What will be the orange coloured compound formed when a mixture of K r 7 and Nal is heated with conc. S? a. r l b. rl c. Na S d. r l 0. Which reaction involves a change in the electron-pair geometry for the underlined atom? a. BF 3 + F BF b. N N c. S + S 3 d The approximate p of a solution formed by mixing equal volumes of solution of 0. M sodium propanoate and 0. M propanoic acid IRLE EMISTRY AING

3 (Ka for propanoic acid =.3 x 0 5 mol dm -3 ) will be: a..5 b. 3.6 c..89 d Match the following: List I List II A. G. E + PV B. G 0. nfe 0. S 3. V RT ln V D.. V nr ln V odes: (A) (B) () (D) a. 3 b. 3 c. 3 d alculate G for the reaction below and tell whether it is spontaneous or nonspontaneous under standard conditions at 5. S(s) + 3 (g) + () S () = -056 kj/mol S = -505 J/mol a. G = -07 kj and the process is spontaneous. b. G = -07 kj and the process is nonspontaneous. c. G = -906 kj and the process is spontaneous. d. G = -906 kj and the process is nonspontaneous. a. Benzene, Glyoxal b. Mesitylene, Methylglyoxal c. yclohexene, exanedial d. ycloctateraene, Glyoxal 6. Mn ( mole) in neutral aqueous medium is disproportionate to: a. /3 mole of Mn and /3 mole of Mn b. /3 mole of Mn and /3 mole of Mn c. /3 mole of Mn 7 and /3 mole of Mn d. /3 mole of Mn 7 and /3 mole of Mn 7. For the reaction A + B +D. The variation of the concentration of the products with time is given by the curve: Y a. X b. Y c. Z d. W 8. XeF 6 is conducting in F due to the formation of: + a. XeF 5 and F c. XeF + 5 and F b. XeF 5 and F + d. None of these 9. An aqueous solution of Nal freezes at Given that Kb 0. 5 K kg mol - Time and K f. 86 K kg mol -, the elevation in boiling point of this solution is: Z W X. Standard electrode potential data are useful for understanding the solubility of an oxidant in a redox titration. Some half cell reactions and their standard potential are given below: Mn r (aq) 8 (aq) 5e Mn (aq) + (l) ; E 0 =.5 V 7 IRLE (aq) Fe 3+ (aq) + e Fe + (aq); l (g) + e l (aq); 3 e r (aq) + 7 (l); E 0 =.38 V E 0 = 0.77 V E 0 =.0 V Identify the only incorrect statement regarding the quantitative estimation of aqueous Fe(N 3 ) : a. Mn can be used in aqueous l b. r 7 can be used in aqueous l c. Mn can be used in aqueous S d. r 7 can be used in aqueous S Ni(N) zonolysis 5. A B Pr essure A and B are respectively: 3 a K b K c.. 86 K d K 30. The number of P P bridges in the structure of phosphorus pentoxide and phosphorus trioxide are respectively: a. 6, 6 b. 5, 5 c. 5, 6 d. 6, (g) (g) (g) + 3 (g) S vap (,l)= x cal K - (b.p.t ) f (, I) = x f ( ) = x 3 f ( 6 ) x ence of the above reaction is: a. x 3 + 3x x b. x 3 + 3x x + 3x T c. x 3 + 3x x 3x T d. x T + x + x 3 x EMISTRY AING

4 3. Which of the following benzene ring is more reactive towards electrophile: a. A b. B c. d. Both a & c 33. Which of the following statements is incorrect? a. Activation energy for the forward reaction equals activation energy for the backward reaction b. For a reversible reaction, an increase in temperature increases the reaction rate for both the forward and the backward reaction c. The larger the initial reactant concentration, for a second order reaction, shorter its half life d. When t is infinitesimally small, the average rate equals the instantaneous rate 3. Plot of log t 0.5 vs log a is a straight line. What conclusions can be drawn from the plot: log t 0.5 Log a a. n =, t 0.5 = ka c. n =, t 0.5 = A B k b. n =, t 0.5 = a d. None of above 35. If a mixture of weak and strong acid is titrated with Na, variation of conductance (y-axis) with addition of Na (x-axis) will be: a. b. c. d. 36. According to the adsorption theory of catalysis, the speed of the reaction increases because: a. adsorption produces heat which increases the speed of the reaction b. adsorption lowers the activation energy of the reaction c. the concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorption d. in the process of adsorption, the activation energy of the molecules becomes large inner electrodes. The value of standard potential for reducing reaction of A + /A, B + /B, + / and D + /D are 0.8,+ 0.3, and.66 volts respectively. The correct sequence in which these metals will be deposited on cathode is: a. A, B,, D b. D,, B, A c. A,, B, D d. D, B,, A 38. The correct arrangement of KS 3, Na S, (N ) S and S 8 in increasing order of oxidation state of S in them is: a. KS 3 < Na S < (N ) S <S 8 b. S 8 < (N ) S < KS 3 < Na S c. (N ) S < S 8 < KS 3 < Na S d. Na S < KS 3 < (N ) S < S For the reaction: Bond energies are given as under: (i), 36 KJ/ mol (ii), 3 KJ/ mol (iii), 37 KJ/mol and (iv) =, 6 KJ/mol What will be the value of 5 0 for the above reaction: a. 89 KJ mol - b. KJ mol - c. + KJ mol - d. +89 KJ mol - 0. The structure of an - amino acid, N3 R Will exist at p: a. 0 b. 7 c. d. 3 7 ) (A) Reduction. (B A and B in the above reaction are: a. + 3 (A) = (B) 37. A solution containing mole per litre each of A X, B X, X and D X is electrolysed using IRLE b.. 3 = 3 EMISTRY AING (A) (B) 3

5 Mn is dark violet, yet the K + is colourless. This is due to the fact that: c. 3 = (A) d. None of these = (B) a. Mn is a transition element ; while K + is not b. [Mn ] is negatively charged ; while K + has a positive charge c. the effective atomic number of Mn in [Mn ] - is 6; while for K +, the atomic number is 8 d. The Mn in a high positive oxidation state allows charge transfer transitions The IUPA name of this compound is a.,, 6-trimethyl--(-methylpropyl) nonane b., 8, 8-trimethyl-6-(-methylpropyl) nonane c. 3,6-dimethyl--(methylene tertiarybutyl)nonane d. 6,6-dimethyl--propyl--(-methylpropyl) heptane 3. A square planar complex represented will show: a. Geometical isomers b. ptical isomerism c. Linage isomerism d. No isomerism. Match list I (ybrid bond orbitals) with list II (species ) and select the correct answer: List I List II A. sp 3. Il B. dsp. Tel. sp 3 d 3. Mn D. sp 3 d -. Ni(N) A B D a. 3 b. 3 c. 3 d N N M N N 3 7. In the production of Mg by the electrolytic method it is a molten mixture of Mgl, Nal and al that is electrolysed. The function of Nal and al is as follows: a. They act as electrolysis and products of their electrolysis reacts with Mgl to yield Mg b. The presence of these help Mgl to melt at lower temperature and there by save much of electricity c. they increase the density of the molten mass d. all 8. onsider the following statements. In diborane :. Boron is approximately sp 3 hybridized. B B angle is There are two terminal B bond for each bond atom. There are only bonding electrons available of these statements a., & are correct b., & 3 are correct c.,3 & are correct d.,3 & are correct 9. onsider following transformations I. XeF 6 + NaF [Na] + [XeF 7 ] - II. Pl 5 (s) [Pl ] + [Pl 6 ] III. [Al( ) 6 ] +3 + Al( ) 5 ] Possible transformations are: a. I b. II c. III d. All 50. End products of following sequence of reaction: 5. The two molecules are indicated below are capable of intramolecular bonding. Which in the likely to form more stable hydrogen bonds: Br Alc. K A 3 / B Ba 3 (I) 3 3 (II) 3 a. b. c. d. a. I b. II c. equal d. No intramolecular hydrogen bonding 6. The atomic number of potassium is 9 and that of manganese is 5. Although the colour of IRLE 5 EMISTRY AING

6 . B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50.. B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50.. B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50.. B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50.. B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50. IRLE 6 EMISTRY AING

7 . B. D 3.. A 5. A D A 0. B.. A 3. A. B 5. D D A 0. A.. B 3.. A 5. D 6. A 7. B B 30. A 3. B 3. B 33. A B 37. A B 0. A. B. A 3. D. D 5. A 6. D 7. B 8. D 9. D 50. IRLE 7 EMISTRY AING

Chemistry Higher level Paper 1

Chemistry Higher level Paper 1 N17/4/EMI/PM/ENG/TZ0/XX hemistry igher level Paper 1 Wednesday 8 November 2017 (afternoon) 1 hour Instructions to candidates Do not open this examination paper until instructed to do so. Answer all the