IITJEE - 2009 ii -chemistry
- 1. IITJEE –Past papersCHEMISTRY- SOLVED PAPER - 2009
- 2. SECTION – ISingle Correct Answer TypeThis section contains 4 multiple choice questions. Each question has 4 choices (A), (B), (C) and (D) for its answer, out which ONLY ONE is correct.
- 3. 01ProblemIn the following carbocation. H/CH3 that is most likely to migrate to the positively charged carbon is CH3 at C-4 H at C-4CH3 at C-2 H at C-2
- 4. Problem02The correct stability order of the following resonance structures is(I) > (II) > (IV) > (III)(II) > (III) > (II) > (IV) (II) > (I) > (III) > (IV) (III) > (I) > (IV) > (II)
- 5. Problem03The spin only magnetic moment value (in Bohr magneto units) of Cr(CO)6 is0 2.84 4.90 5.92
- 6. Problem04For a first order reaction A -> P, the temperature (T) dependent rate constant (k) was found to follow the equation log k (2000) 6.0 The pre-exponential factor A and the activation energy Ea, respectively, are1.0 × 106 s−1 and 9.2 kJmol−1 6.0 s−1 and 16.6 kJmol−11.0 × 106 s−1 and 16.6 kJmol−1 1.0 × 106 s−1 and 38.3 kJmol−1
- 7. SECTION – IIMultiple Correct Choice TypeThis section contains 5 multiple choice questions. Each question has 4 choices (A), (B), (C) and (D) for its answer, out which ONE OR MORE is/are correct.
- 8. Problem05The nitrogen oxide(s) that contain(s) N−N bond(s) is(are)N2O N2O3N2O4 N2O5
- 9. Problem06In the reaction the amine(s) X is(are)NH3 CH3NH2(CH3)2NH (CH3)3N
- 10. Problem07The correct statement(s) about the following sugars X and Y is(are) X is a reducing sugar and Y is a non-reducing sugarX is a non-reducing sugar and Y is a reducing sugar The glucosidic linkages in X and Y are α and β, respectively The glucosidic linkages in X and Y are β and α, respectively
- 11. Problem08Among the following, the state function(s) is(are)Internal energy Irreversible expansion workReversible expansion work Molar enthalpy
- 12. Problem09For the reduction of 3 NO− ion in an aqueous solution, E0 is +0.96 V. Values of E0 for some metal ions are given belowV2+ (aq) + 2ē− ->V E0 = −1.19 VFe3+ (aq) + 3ē− ->Fe E0 = −0.04 VAu3+ (aq) + 3ē− ->Au E0 = +1.40 VHg2+ (aq) + 2ē− ->Hg E0 = +0.86 VThe pair(s) of metals that is(are) oxidized by 3 NO− in aqueous solution is(are)V and Hg Hg and FeFe and Au Fe and V
- 13. SECTION – IIIMatch Type This section contains 2 questions. Each question contains statements given in two columns, which have to be matched. The statements in Column I are labelled A, B, C and D, while the statements in Column II are labelled p, q, r, s and t. Any given statement in Column I can have correct matching with ONE OR MORE statement(s) in Column II. The appropriate bubbles corresponding to the answers to these questions have to be darkened as illustrated in the following example If the correct matches are A – p, s and t; B – q and r; C – p and q; and D – s and t; then the correct darkening of bubbles will look like the following:
- 14. Problem10Match each of the compounds given in Column I with the reaction(s), that they can undergo given in Column II.Column – I Column – IIa. (p) Nucleophilic substitution b. (q) Eliminationc. (r) Nucleophilic additiond. (s) Esterification with acetic anhydride (t) Dehydrogenation
- 15. Problem11Match each of the reactions given in Column I with the corresponding product(s) given in Column II.Column – I Column – II(A) Cu + dil HNO3 (p) NO(B) Cu + conc HNO3 (q) NO2(C) Zn + dil HNO3 (r) N2O(D) Zn + conc HNO3 (s) Cu(NO3)2 (t) Zn(NO3)2
- 16. SECTION – IV (Paragraph Type)Integer Answer Type This section contains 8 questions. The answer to each of the questions is a single digit integer, ranging from 0 to 9. The appropriate bubbles below the respective question numbers in the ORS have to be darkened. For example, if the correct answers to question numbers X, Y, Z and W (say) are 6, 0, 9 and 2, respectively, then the correct darkening of bubbles will look like the following:
- 17. Problem12The oxidation number of Mn in the product of alkaline oxidative fusion of MnO2 is
- 18. Problem13The number of water molecule(s) directly bonded to the metal centre in 4 2 CuSO4 ⋅5H2O is
- 19. Problem14The coordination number of Al in the crystalline state of AlCl3 is
- 20. Problem15In a constant volume calorimeter, 3.5 g of a gas with molecular weight 28 was burnt in excess oxygen at 298.0 K. The temperature of the calorimeter was found to increase from 298.0 K to 298.45 K due to the combustion process. Given that the heat capacity of the calorimeter is 2.5 kJ K−1, the numerical value for the enthalpy of combustion of the gas in kJmol−1 is
- 21. Problem16The dissociation constant of a substituted benzoic acid at 25oC is 1.0 × 10−4. The pH of a 0.01 M solution of its sodium salt is
- 22. Problem17The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula C5H10 is
- 23. Problem18The total number of α and β particles emitted in the nuclear reaction Pb is
- 24. Problem19At 400 K, the root mean square (rms) speed of a gas X (molecular weight = 40) is equal to the most probable speed of gas Y at 60 K. The molecular weight of the gas Y is
- 25. FOR SOLUTION VISIT WWW.VASISTA.NET
Editor's Notes
- #4: aaa