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Combined Geo-Scientist (P) Examination 2021, Paper-II (Chemistry), , 1., The number of radial nodes for 2s, 3p and 3d orbitals, respectively are:, (a) 2, 1, 0, (b) 2, 1, 1, (c) 1, 0, 0, (d) 1, 1, 0, 2., What fraction of the total number of electrons is in the p-sublevels in Iron (Fe)?, (a) 50%, (b) 49%, (c) 46.15%, (d) 47.82%, 3., Which is the correct order of degree of hydration among the following ions?, (a) Be2+ > Mg2+ > Sr2+ > Ba2+, (b) Be2+ > Sr2+ > Mg2+ > Ba2+, (c) Ba2+ > Sr2+ > Mg2+ > Be2+, (d) Ba2+ > Mg2+ > Sr2+ > Be2+, 4., Consider the following statements regarding diagonal relationship of ‘B’ and ‘Si’:, 1. The electronegativity values of both the elements are almost same, 2. Both the elements have almost identical values of their ionic potential, Which of the statements given above is/are correct?, (a) 1 and 2, (b) 1 only, (c) 2 only, (d) Neither 1 nor 2, 5., Consider the following statements regarding Lanthanum:, 1. It is a f-block element, 2. It is an inner transition element, 3. It is a transition series element, 4. It is a rare earth metal, Which of the statements given above are correct?, (a) 1, 2, 3 and 4, (b) 2 and 4 only, (c) 1, 2 and 4 only, (d) 1 and 3 only, 6., Argon (Ar) is used in arc welding because of its:, (a) High calorific value, (b) Ability to lower the melting point of metal, (c) Low reactivity, (d) Flammability
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7., Which one of the following represents the correct order of ionic radii among K+, S2–, Cl– and Ca2+?, (a) Ca2+ > K+ > Cl– > S2–, (b) S2– > Cl– > K+ > Ca2+, (c) Cl– > S2– > K+ > Ca2+, (d) K+ > Ca2+ > S2– > Cl–, 8., The dipole moments of H─C≡C─Cl, CO and HCl are in the directions:, (a) ←, ← and ← respectively, (b) ←, ← and → respectively, (c) →, → and → respectively, (d) ←, → and ← respectively, 9., Consider the following pairs of species of oxygen and their magnetic behavior:, 1. O–2 , O2–, 2 → Both diamagnetic, +, 2. O2 , O2–, 2 → Both paramagnetic, +, 3. O2 , O–2 → Both paramagnetic, 4. O, O2–, 2 → Both paramagnetic, Which of the pair(s) of oxygen species given above represents the correct magnetic behavior?, (a) 1 only, (b) 1 and 2, (c) 3, (d) 2 and 4, 10., Consider the following statements regarding the properties of Nitric oxide (NO):, 1. Nitric oxide gas is paramagnetic but liquid nitric oxide is diamagnetic, 2. Nitric oxide gas is diamagnetic but liquid nitric oxide is paramagnetic, 3. Nitric oxide is a neutral oxide and is not an acid anhydride, Which of the statement(s) given above is/are correct?, (a) 1 and 3, (b) 1 only, (c) 2 and 3, (d) 2 only, 11., Which one of the following substances has the greatest ionic character?, (a) Cl2O, (b) NCl3, (c) PbCl2, (d) BaCl2
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12., Consider the following statements regarding Madelung constant:, Statement-1: Madelung constant typically increases with coordination number, Statement-2: Large contribution towards Madelung constant comes from nearest neighbors, and such, neighbors are more numerous when coordination number is large, Which one of the following is correct in respect of above statements?, (a) Both statement-1 and statement-2 are true and statement-2 is the correct explanation of, statement-1, (b) Both statement-1 and statement-2 are true but statement-2 is not the correct explanation of, statement-1, (c) Statement-1 is true but statement-2 is false, (d) Statement-1 is false but statement-2 is true, 13., Which one of the following represents the correct order of melting point among BeCl2, MgCl2, CaCl2, and NaCl?, (a) BeCl2 < MgCl2 < CaCl2 < NaCl, (b) MgCl2 < BeCl2 < CaCl2 < NaCl, (c) BeCl2 < MgCl2 < NaCl < CaCl2, (d) BeCl2 < CaCl2 < MgCl2 < NaCl, 14., What kind of defect(s) appear in AgBr crystal?, (a) Schottky and Frenkel, (b) Frenkel only, (c) Schottky only, (d) Metal excess defect, 15., Consider the following statements:, 1. N2 molecule is paramagnetic, 2. O2 molecule is diamagnetic, 3. CO+ has more bond order than CO, 4. NO+ has less bond order than NO, Which of the statement(s) given above is/are correct?, (a) 1 and 4, (b) 1 and 2, (c) 3, (d) 2 only, 16., The correct order of the bond angles among NH3, NH4+ and NH2– is:, (a) NH3 > NH4+ > NH2–, (b) NH4+ > NH3 > NH2–, (c) NH3 > NH2– > NH4+, (d) NH4+ > NH2– > NH3
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17., Consider the following statements:, Statement-1: KO2 is paramagnetic, Statement-2: The super oxide O2– is paramagnetic because it has one unpaired electron in π* 2p, molecular orbital, Which one of the following is correct in respect of above statements?, (a) Both statement-1 and statement-2 are true and statement-2 is the correct explanation of, statement-1, (b) Both statement-1 and statement-2 are true but statement-2 is not the correct explanation of, statement-1, (c) Statement-1 is true but statement-2 is false, (d) Statement-1 is false but statement-2 is true, 18., Which one of the following is NOT a resonance structure of cyanate (OCN–)?, , 19., What are the spin only magnetic moments (in BM) for Ni (II) ion in a square planar and octahedral, geometry, respectively?, (a) 0 (zero) and 2.83, (b) 2.83 and 0 (zero), (c) 2.83 and 2.83, (d) 0 (zero) and 0 (zero), 20., Which one of the following complexes is tetrahedral as well as diamagnetic?, (a) [Ni(NH3)4]2+, (b) [NiCl4]2–, (c) [Ni(CO)4], (d) [Ni(CN)4]2–, 21., Which one of the following will NOT precipitate AgCl while reacting with excess of AgNO3 solution, at room temperature?, (The oxidation state of cobalt (Co) in all the complexes is +3), (a) CoCl3.6NH3, (b) CoCl3.5NH3, (c) CoCl3.4NH3, (d) CoCl3.3NH3
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29., The correct order of the acidic strength of H3PO4, H3PO3 and H3PO2 is:, (a) H3PO2 > H3PO3 > H3PO4, (b) H3PO4 > H3PO3 > H3PO2, (c) H3PO4 > H3PO2 > H3PO3, (d) H3PO3 > H3PO4 > H3PO2, 30., Which one of the following substances has highest proton affinity?, (a) H2O, (b) NH3, (c) H2S, (d) CH3COOH, 31., An aqueous solution of HN3 was diluted two times, three times, four times and five times using, required amount of water. Considering ‘α’ to be the ionization constant and ‘V’ as the final volume of, diluted solution, choose the correct answer from the following:, (a) All the solutions will be acidic and the graph of α vs. V is non-linear, (b) All the solutions will be basic and the graph of α vs. V is non-linear, (c) All the solutions will be acidic and the graph of α vs. V is linear, (d) All the solutions will be basic and the graph of α vs. V is linear, 32., Which one of the following represents the correct order of acidity of water and alcohols?, (a) H2O > RCH2OH > R2CHOH > R3COH, (b) RCH2OH > R2CHOH > R3COH > H2O, (c) H2O < RCH2OH < R2CHOH < R3COH, (d) RCH2OH < R2CHOH < R3COH < H2O, 33., A student calculated the pH of 10–7 M NaOH solution and 10–8 M HCl solution to be 7 and 8,, respectively. To verify, the student performed experiment in laboratory using pH-meter. The, instrument displays the pH of former and later solutions as 7.3 and 6.9, respectively. Choose the correct, answer from the following:, (a) The pH-meter is malfunctioned and the calculation results of the student are correct, (b) The pH-meter is working properly and the calculation results of the student are incorrect, (c) The pH-meter is malfunctioned and the calculation results of the student are wrong, (d) The calculation results of the student are correct and the instrument is working properly only, for acids, 34., Which one of the following has the pH value NOT equal to one?, (a) 0.1 M HNO3, (b) 0.05 M H2SO4, (c) 0.1 M CH3COOH, (d) 50 ml of 0.4 M HCl + 50 ml of 0.2 M NaOH
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35., What will be the pH of a buffer solution containing 0.20 mole of NH4OH and 0.25 mole of NH4Cl per, litre?, (Dissociation constant of NH4OH at room temperature is 1.81 × 10–5, log1.81 = 0.2577 and log1.25 =, 0.0969), (a) 9.161, (b) 9.521, (c) 8.161, (d) 9.312, 36., The molarity of concentrated commercial HCl with 36 % (w/w) HCl and density 1.19 g/cm 3 is close, to:, (a) 11.7 M, (b) 10.6 M, (c) 11.2 M, (d) 11.5 M, 37., Which one of the following primary standard is usually used to standardize KOH by titration?, (a) Potassium acid phthalate, (b) Sulphuric acid, (c) Hydrochloric acid, (d) Nitric acid, 38., While performing the titration between Mohr’s salt solution and potassium dichromate solution using, diphenylamine as indicator, a student forgot to add o-phosphoric acid. Choose the correct answer from, the following:, (a) The end point will be observed before the actual end point, (b) The end point will be observed after the actual end point, (c) The end point will never be observed, (d) The end point will be observed at its actual end point as there was no need to add o-phosphoric, acid, 39., Consider following statements in respect of titration between Ca2+ solution and EDTA solution using, Eriochrome Black T as indicator (In):, 1. The end point will be red in color, 2. The end point will be blue in color, 3. The end point depends on pH of solution which is controlled by adding ammonia –ammonium, citrate buffer, 4. The end point is observed since metal–In complex is more stable than metal–EDTA complex, Which of the statement(s) given above is/are correct?, (a) 1, 3 and 4, (b) 2, 3 and 4, (c) 2 and 3 only, (d) 2 only
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45., Which one of the following relations for three types of velocities is true for oxygen gas at 300 K?, (where 〈c 2 〉½ = root mean square velocity; 〈c〉 = average velocity; cp = most probable velocity), (a) 〈c 2 〉½ > cp > 〈c〉, (b) 〈c〉 > cp > 〈c 2 〉½, (c) 〈c 2 〉½ > 〈c〉 > cp, (d) 〈c〉 > 〈c 2 〉½ > cp, 46., Consider the following statements regarding the most probable speed of gas particles:, 1. The most probable speed increases with increasing temperature and with decreasing molar, mass and simultaneously distribution becomes broader, 2. The most probable speed increases with increasing temperature and with increasing molar mass, and distribution becomes sharp, 3. The most probable speed decreases with the decrease of temperature and with increasing molar, mass and simultaneously distribution becomes sharp, Which of the statement(s) given above is/are correct?, (a) 1 and 3, (b) 2 and 3, (c) 1 only, (d) 2 only, 47., One hundred molecules of Oxygen (O2) escape through a small hole on a container at a pressure of 1, torr and temperature of 300 K per second to vacuum. The number of hydrogen molecules that would, escape per second through the same hole under the same conditions of temperature and pressure is:, (M.W. of O2 = 32 g mol-1 and M.W. of H2 = 2 g mol-1), (a) 1200, (b) 800, (c) 1600, (d) 400, 48., The mean free path of a gas is:, (a) Independent of temperature but dependent on pressure, (b) Independent of pressure but dependent on temperature, (c) Independent of both pressure and temperature, (d) Dependent on both pressure and temperature, 49., Which one of the following is NOT a Maxwell thermodynamic relation?, 𝜕S, , 𝜕P, , (a) (𝜕V) = (𝜕T), 𝑇, , 𝑉, , 𝜕S, , 𝜕V, , (b) (𝜕P) = (𝜕T), 𝑇, , 𝑃, , 𝜕V, , 𝜕𝑇, , 𝜕S 𝑃, 𝜕𝑃, , 𝜕𝑃 𝑆, 𝜕𝑇, , (c) ( ) = ( ), , (d) – (𝜕𝑆 ) = (𝜕𝑉), 𝑉, , 𝑆
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50., Consider the following first order elementary reaction:, , The half-life period of the forward reaction is 10 min. and that of the backward reaction is 1 min. What, is the value of equilibrium constant for the above reaction?, (a) 0.693, (b) 0.0693, (c) 0.10, (d) 10.0, 51., Consider the following figure representing the increase in entropy of a substance from absolute zero, to its gaseous state with temperature change:, F, E, , …….., , ……………………, …, , D, , T1, , T2, , C, , S°, A, , B, , Temperature, , ΔS° (fusion) and ΔS° (vaporization) are respectively indicated by:, (a) AB and BC, (b) BC and CD, (c) BC and DE, (d) CD and DE, 52., Consider the following quantities:, 1. Concentration, 2. Volume, 3. Standard electrode potential, 4. Internal energy, Which of the following statements given below are correct?, (a) 1 and 3 are intensive quantities; 2 and 4 are extensive quantities, (b) 1 and 4 are extensive quantities; 2 and 3 are intensive quantities, (c) 1 and 2 are extensive quantities; 3 and 4 are intensive quantities, (d) 1, 2 and 4 are extensive quantities; 3 is intensive quantity
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58., 𝛿(𝛥𝐺), , If ΔG = ΔH – TΔS and ΔG = ΔH + T (, , 𝛿𝑇, , ) then the variation of emf of cell (E°) with temperature, 𝑃, , T at constant pressure is given by:, (a), (b), (c), , 𝛥𝐻, 𝑛𝐹, 𝛥𝐺, 𝑛𝐹, 𝛥𝑆, 𝑛𝐹, 𝛥𝑆, , (d) −, , 𝑛𝐹, , 59., Which of the following is correct about the sign of enthalpy and entropy changes of an evaporating, liquid?, (a) ΔH is positive; ΔS is positive, (b) ΔH is negative; ΔS is negative, (c) ΔH is positive; ΔS is negative, (d) ΔH is negative; ΔS is positive, 60., Consider the following equilibrium process at 373K and 1 atm. pressure:, Which one of the following relations is true for the above process?, (a) ΔH = 0, (b) ΔE = 0, (c) ΔH = TΔS, (d) ΔH = ΔE, 61., Which one of the following aqueous solutions has the lowest vapor pressure at room temperature?, (a) 0.1 molal hexaamminecobalt (III) chloride, (b) 0.1 molal barium chloride, (c) 0.1 molal glucose, (d) 0.1 molal Tris (ethylenediamine) copper (II) sulfate, 62., Compared to pure water, 1 M sugar-water solution will have a:, (a) Lower vapor pressure, lower boiling point and lower freezing point, (b) Lower vapor pressure, lower boiling point and higher freezing point, (c) Lower vapor pressure, higher boiling point and lower freezing point, (d) Higher vapor pressure, higher boiling point and higher freezing point
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63., The relation between osmotic pressure (Π) and lowering of vapor pressure in an infinitely dilute, solution is:, 𝑝, , (a) Π = V0RT ln (𝑝0 ), (b) Π =, , 𝑅𝑇, 𝑉0, , 𝑝0, , ln ( 𝑝 ), 𝑝, , (c) Π = V0 + RT ln (𝑝0 ), 𝑝, , (d) Π = V0 – RT ln (𝑝0 ), 64., The vapor pressure of ethyl acetate at 293K is 72.8 torr. The vapor pressure of the solution obtained, by dissolving 0.4 g of a non-volatile solute (molar mass = 60 gmol-1) in 100 g of ethyl acetate at the, same temperature is:, (a) 72.91 torr, (b) 72.37 torr, (c) 72.60 torr, (d) 72.00 torr, 65., People with high blood pressure are advised to have lower intake of salt in their food because:, 1. Higher intake of salt causes higher osmotic pressure, 2. It results in greater inflow of water in the cells and causes water retention in the tissue cells, and intercellular spaces, Which of the statement(s) given above is/are correct?, (a) 1 only, (b) 2 only, (c) 1 and 2, (d) Neither 1 nor 2, 66., The equation Π = c2RT is known as:, (where c2 = n2/V is the molar concentration of the solute in the given solution and other symbols have, their usual meanings), (a) Van’t Hoff equation, (b) Raoult’s law equation, (c) Henry law equation, (d) Walden’s rule, 67., The boiling point of Chloroform was raised by 0.325K when 5.141 × 10–4 kg of a non-volatile solute, was dissolved in 35 × 10–3 kg of Chloroform. Calculate the molar mass of the solute?, (molal boiling point elevation constant for chloroform is 3.9 K kg mol–1), (a) 0.215 kg mol–1, (b) 0.176 kg mol–1, (c) 0.195 kg mol–1, (d) 0.151 kg mol–1
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68., P is the total vapor pressure of an ideal binary liquid solution. If yA and yB are the amount fractions of, the constituents in vapor phase, then which one of the following statements is correct?, (a) P varies linearly with yA and yB, (b) 1/P varies linearly with yA and yB, (c) P varies linearly with yA and yB and passes through origin, (d) 1/P varies linearly with yA and yB and passes through origin, 69., The Henry Law constant (Ki) for Hydrogen (H2) in water at room temperature is 7.03 × 109 Pa. If the, pressure of H2 in equilibrium with water is 1.00 × 106 Pa at the same temperature, then the mole, fraction of H2 in the solution is:, (a) 0.00427, (b) 0.0427, (c) 0.000821, (d) 0.000142, 70., Specific conductance of a decimolar solution of KCl at 18 °C is 1.12 Sm–1. The resistance of a, conductivity cell containing the solution at the same temperature was found to be 55 ohm. What is the, cell constant?, (a) 0.616 cm-1, (b) 0.716 cm-1, (c) 0.516 cm-1, (d) 0.699 cm-1, 71., In acidic medium MnO–4 converted to Mn2+. The quantity of electricity in Faraday required to reduce, 0.2 mole of MnO–4 to Mn2+ would be:, (a) 0.2, (b) 0.4, (c) 1, (d) 2.5, 72., What will be the correct order of mobility of the following ions in aqueous solution at 298 K?, –, (a) Cl– > F – > SO2–, 4 > Br, –, –, (b) F – > SO2–, 4 > Br > Cl, –, –, –, (c) SO2–, 4 > Br > Cl > F, –, –, (d) Br – > SO2–, 4 > Cl > F, 73., At 291 K the ionic velocities of Ag+ is 0.00057 cm/s and that of NO−, 3 is 0.00063 cm/s. If the specific, -1, -1, conductivity of 0.1N AgNO3 solution is 0.00947ohm cm , then the degree of dissociation at this, dilution is:, (a) 0.817, (b) 0.918, (c) 0.698, (d) 0.761
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74., Plots of equivalent conductance (∧) vs square root of concentration (√𝐶) of two electrolytes are, given below, with ∧0 being the equivalent conductance at infinite dilution:, ∧0, , ∧, , ∧, √𝐶, , √𝐶, (I), (II), Which one of the following statements is correct?, (a) Plot I is for weak electrolyte and plot II is for strong electrolyte, (b) Extrapolation to ∧0 as shown in plot I cannot be done, (c) Extrapolation to ∧0 in plot II cannot be done to get the correct ∧0, (d) Plots I and II are valid for any electrolyte for different range of concentrations, 75., Consider the following statements for an electrolyte solution which is diluted to approach infinite, dilution:, Statement-I: Ion-ion interactions are reduced to effect the increase in conductance, Statement-II: The number of ions gets increased to effect increase in conductance, Which one of the following is correct with respect to above statements?, (a) Both the statements I and II are true for strong electrolytes, (b) Both the statements I and II are true for weak electrolytes, (c) Statement I is true for weak electrolytes and statement II is true for strong electrolytes, (d) Statement I is true for strong electrolytes and statement II is true for weak electrolytes, 76., The value of log γ± in the Debye-Huckel limiting law for a 0.01m KCl solution in water at 25 °C is:, (where γ± is the mean ionic activity coefficient), (a) – 0.1018, (b) – 0.0509, (c) + 0.1018, (d) – 0.0254
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Conductivity, , 77., Consider the following plot:, , Volume of base, , P, , Q, , ………………………..…, …, , ………….., , Conductance, , The above plot indicates the conductometric titration between:, (a) Weak acid vs weak base, (b) Strong acid vs weak base, (c) Weak acid vs strong base, (d) Strong acid vs strong base, 78., Consider the following plot for conductometric study of a reaction between KCl and AgNO3 solutions:, , R, , Volume of AgNO3 solution, , Cause/s behind the constancy of conductance in the region PQ is/are due to:, (a) Precipitation of AgCl only, (b) Replacement of Cl– by NO–3 with each species having equal conductance, (c) Precipitation of AgCl and replacement of Cl– by NO–3, (d) Inert behavior of the instrument in this region
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79., Consider the following plot for the conductometric titration:, , Conductance, , I, , II, , Volume of titrant, , Which one of the following is correct in respect of above plot?, (a) Plot I is for weak acid vs weak alkali; plot II is for weak acid vs strong alkali, (b) Plot I is for strong acid vs strong alkali; plot II is for AgNO3 solution vs NH4Cl solution, (c) Plot I is for AgNO3 solution vs HCl; plot II is for AgNO3 vs KCl, (d) Plot I is for weak acid vs strong alkali; plot II is for weak acid vs weak alkali, 80., Two electrolytes AX and BX were chosen to determine transport number using moving boundary, method. It is given that:, I: The cation B+ moves slower than the cation A+, II: The electrolyte BX is denser than AX, Which one of the following is correct?, (a) The transport number of A+ can be determined if AX is used as principal electrolyte and BX, as indicator electrolyte, (b) The transport number of B+ can be determined if AX is used as indicator electrolyte and BX as, principal electrolyte, (c) The transport number of X– can be determined if AX is used as indicator electrolyte and BX as, principal electrolyte, (d) The transport number of A+, B+ and X– can be determined if AX is used as principal electrolyte, and BX as indicator electrolyte, 81., The total number of delocalized pi-electrons in compounds I and II are:, , (a), (b), (c), (d), , 18 and 14 respectively, 24 and 16 respectively, 16 and 12 respectively, 22 and 14 respectively
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82., Rank the following structures in order of increasing contribution to the resonance hybrid:, , (a), (b), (c), (d), , II < I < III, III < II < I, III < I < II, I < II < III, , 83., Which of the following indicated atoms in each species has sp2-hybridization?, , (a), (b), (c), (d), , I and III only, I, III and IV only, II and IV only, I, II, III and IV, , 84., The total number of hyperconjugative structures possible for the following carbocation is:, , (a), (b), (c), (d), , 3, 1, 4, 12, , 85., Which one of the following statements regarding polarity of bonds is NOT true?, (a) A compound with only one polar bond must be polar, (b) A compound with two or more polar bonds will always be polar, (c) A compound cannot be polar if it contains only nonpolar bonds, (d) More electronegative atoms “pull” electron density towards them, making a dipole
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86., The correct order of the basicity of the following amines is:, , (a), (b), (c), (d), , IV > III > II > I, III > IV > I > II, IV > III > I > II, III > IV > II > I, , 87., The correct order of stability of the following carbocations is:, , (a), (b), (c), (d), , II > IV > I > III, I > II > III > IV, II > I > IV > III, I > III > II > IV, , 88., Rank the following compounds in order of their decreasing dipole moment:, , (a), (b), (c), (d), , III > II > IV > I, IV > III > I > II, II > IV > III > I, I > II > IV > III, , 89., The relationship between the following pair of compounds is:, , (a), (b), (c), (d), , Identical, Enantiomers, Diastereomers, Constitutional isomers
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90., Consider the following set of compounds:, , Which one of the following statements is NOT true about the above compounds (I–IV)?, (a) I and II represent same structures and are meso compounds, (b) [I and III] and [I and IV] are diastereomers, (c) III and IV are enantiomers, (d) III and IV are diastereomers, 91., The correct statement about the following molecule is:, , (a), (b), (c), (d), , Molecule is chiral and possesses a chiral plane, Molecule is chiral and possesses a chiral axis, Molecule is achiral and possesses a plane of symmetry, Molecule is achiral and possesses a centre of symmetry, , 92., A sample of lactic acid was found to have an enantiomeric excess (ee) of 14% with respect to R (+), isomer. What is the percentage of S (–) isomer in the sample?, (a) 86, (b) 57, (c) 43, (d) 72, 93., In 2-butanol observed angle of rotation is 1.03°, concentration of sample is 1M and length of sample, tube is 10 cm. Specific angle of rotation will be:, (a) 1.392°, (b) 13.92°, (c) 14.20°, (d) 139.2°, 94., The absolute configuration of C2 and C3 in the following compound is:, , (a), (b), (c), (d), , 2R, 3S, 2S, 3R, 2S, 3S, 2R, 3R
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99., The correct order of stability of Newman projections of 1, 2-dichloroethane is:, (a) anti > eclipsed > gauche, (b) gauche > eclipsed > anti, (c) gauche > anti > eclipsed, (d) anti > gauche > eclipsed, 100., Among the following, the Newman projections for meso-2,3-butanediol are:, , (a) I and II, (b) I and III, (c) III and IV, (d) II and IV, 101., The major products [X] and [Y] formed in the following reactions are:, , (a), (b), (c), (d), 102., Which one of the following chlorides undergoes a fastest SN2 reaction with KI in acetone?, (a), , (b), (c), (d)
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106., Which of the following statement is TRUE for the reaction mentioned below?, , (a) I is major and it is called Hoffmann product, (b) I is minor and it is called Zaitsev product, (c) II is major and it is called Zaitsev product, (d) II is minor and it is called Hoffmann product, 107., Which one of the following alcohols dehydrates the fastest when heated with acid?, , 108., The major product formed in the following reaction is:, , (a), , (b), , (c), , (d)
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113., The intermediate [X] and the major product [Y] formed in the following reaction are:, , (a), , (b), , (c), , (d), 114., Which is the major product formed in the reaction of phenol with bromine in carbon disulfide at 0–, 5°C temperature?
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115., Which is the major product formed in the reaction of o-chloroanisole with NaNH2 in liquid ammonia, at low temperature?, (a) o-Anisidine, (b) m-Anisidine, (c) p-Anisidine, (d) o-chloroaniline, 116., Predict the major product formed in the following reaction:, , (a), , (b), , (c), , (d)
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117., Consider the following reaction:, , The major product ‘P’ of Wagner-Meerwein rearrangement is:, , 118., The major product formed in the following reaction is:, , (a), (b), , (c), , (d), , 119., Which one of the following is NOT a characteristic of neighboring group participation effect?, (a) An unusual stereochemical result, (b) An unexpectedly fast rate of reaction, (c) Formation of a rearranged product, (d) The extent of neighboring group participation increases with increasing the nucleophilicity of, nucleophile in solvolysis reaction
