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NARAYANA IIT/PMT ACADEMY JEE ADVANCE : 2013 (PAPER – II) CODE: 0 PART II : CHEMISTRY SECTION – 1 : (One or more options correct Type) This section contains 8 multiple choice questions Each question has four choices (A), (B), (C) and (D) out of which ONE or MORE are correct 21 The carbon-based reduction method is NOT used for the extraction of (A) tin from SnO 2 (B) iron from Fe 2 O 3 (C) aluminium from Al 2 O 3 (D) magnesium from MgCO 3 CaCO 3 Ans Sol (C), (D) Al is extracted by electrolytic reduction MgCO 3 , CaCO 3 are extracted by electrolytic reduction 22 The thermal dissociation equilibrium of CaCO 3 (s) is studied under different conditions CaCO 3 (s) CaO (s) + CO 2 (g) For this equilibrium, the correct statement(s) is(are) (A) H is dependent of T (B) K is independent of the initial amount of CaCO 3 (C) K is dependent on the pressure of CO 2 at a given T (D) H is independent of the catalyst, if any Ans (A), (B), (D) Sol Conceptual 23 The correct statement(s) about O 3 is(are) (A) O O bond lengths are equal (B) Thermal decomposition of O 3 is endothermic (C) O 3 is diamagnetic in nature (D) O 3 has a bent structure Ans (A), (B), (C), (D) Sol (A) – bond length are equal due to resonance O O + O - No unpaired electrons so diamagnetic 24 In the nuclear transmutation Be X Be Y 9 8 4 4 (X, Y) is(are) (A) ,n (B) p,D (C) n, D (D) ,p Ans (A), (B) Sol (A) 9 8 1 4Be 4Be 0 n NARAYANA GROUP OF EDUCATIONAL INSTITUTIONS - INDIA 14
(B) 9 1 8 2 4Be 1 p 4Be 1D NARAYANA IIT/PMT ACADEMY JEE ADVANCE : 2013 25 The major product(s) of the following reaction is(are) OH (PAPER – II) CODE: 0 aqueous Br2 3.0 equivalents ? Br SO 3 H OH Br Br OH Br OH OH Br Ans Sol. Br Br Br Br Br SO 3 H Br Br SO 3 H P Q R S (A) P (B) Q (C) R (D) S (B) OH OH Br Br aqueous Br2 3.0 equivalents SO 3 H Br 26 After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are) O Reaction I: H 3 C CH 3 1.0 mol O Reaction II: H 3 C CH 3 O 1.0 mol O Br2 1.0mol aqueous NaOH Br2 1.0mol CH3COOH O O O O C H 3 CH 2 Br H 3 C CBr 3 Br 3 C CBr 3 CH 2 Br CH 2 Br C H 3 ONa C H 3 ONa Ans P Q R S T U (A) Reaction I: P and Reaction II : P (B) Reaction I : U, acetone and Reaction II: Q, acetone (C) Reaction I: T, U, acetone and Reaction II: P (D) Reaction I: R, acetone and Reaction II: S, acetone (C) NARAYANA GROUP OF EDUCATIONAL INSTITUTIONS - INDIA 15
Page 1 and 2: NARAYANA IIT/PMT ACADEMY JEE ADVANC
Page 3 and 4: Ans Sol: 9 (C) 5R A, C 2 an o Z 4.5
Page 9 and 10: (A) 2 BQR Ans (C or B) Sol e B 2 R
Page 13: NARAYANA IIT/PMT ACADEMY JEE ADVANC
Page 19 and 20: (C) (D) O O O V HOH 2 C NARAYANA II
Page 23 and 24: 1 0 3 0 3 NARAYANA IIT/PMT ACADEMY
Page 29 and 30: Sol n Lt 1 0 n n n Lt Lt Lt 1 n 1 n
Page 31 and 32: Ans Sol (C) f ' x f x ,0 x (C) For

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