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A fresh set of 50 random questions is generated every time you open this page and every time you refresh it. The form will be autosubmitted at end of 60 minutes after page open/refresh. For each of the following multiple choice questions, choose the most appropriate answer : 1. The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with A. PCl3 B. Dry HCl in the presence of anhydrous ZnCl2 C. SOCl2 in presence of pyridine D. PCl5 2. The correct sequence of reactions to convert p-nitrophenol into quinol involves A. diazotization, reduction and hydrolysis B. reduction, diazotization and hydrolysis C. hydrolysis, reduction and diazotization D. hydrolysis, diazotization and reduction 3. A diabetic person carries a pocket of Glucose with him always, because A. Glucose increases the blood sugar level almost instantaneously. B. Glucose increases the blood sugar level slowly. C. Glucose reduces the blood sugar level. D. Glucose reduces the blood sugar level slowly. 4. The iron present in it is oxidised by KMnO4 in acid medium. The equivalent mass of Mohr's salt is A. 156 B. 392 C. 31.6 D. 278 5. Which one of the following statements is true'? A. Refining of oil involves hydrogenation B. Addition of antioxidant to oil minimizes rancidity C. Saponification of oil yields a diol. D. Drying of oil involves hydrolysis 6. The molecular mass of the metal nitrate is A. 188 B. 168 C. I92 D. 182 7. The set of quantum numbers for the outermost electron for copper in its ground state is A. 4, 2, 2, +½ B. 4, 0, 0, +½ C. 3, 2, 2, +½ D. 4, 1, 1, +½ 8. Which of the following is correct option for free expansion of an ideal gas under adiabatic condition? A. q = 0, DT ¹ 0, w = 0 B. q ¹ 0, DT = 0, w = 0 C. q = 0, DT = 0, w = 0 D. q = 0, DT < 0, w ¹ 0 9. 44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is A. 75 B. 69.4 C. 25 D. 30.6 10. equilibrium is shifted to the leftCORRECT A. equilibrium is shifted to the right B. C. equilibrium is unaltered D. reaction rate does not change 11. The yellow precipitate formed during the chromyl chloride test is chemically A. chromic acid B. lead acetate C. sodium chromate D. lead chromate 12. The reagent used to convert an alkyne to alkene is A. Zn - Hg / HCl B. Zn / HCl C. Sn / HCl D. Pd / H2 13. The oxide of an element whose electronic configuration is ls2 2s2 2p6 3s1 is A. Basic B. Neutral C. Acidic D. Amphoteric 14. Carbon cannot reduce Fe2O3 to Fe at a temperature below 983 K because A. CO is thermodynamically more stable then Fe2O3 B. free energy change for the formation of CO is more negative then that of Fe2O3 C. carbon has higher affinity towards oxygen then iron D. iron has higher affinity towards oxygen then carbon 15. pH value of which one of the following is not equal to one? A. 0.05 M H2SO4 B. 0.1 M CH3 COOH C. 0.1 M HNO3 D. 50cm3 of 0.4 M HCI +50 cm3 of 0.2M NaOH 16. 44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is [Atomic mass of Ca = 40] A. 25 B. 75 C. 31.5 D. 40.2 17. Excess of PCl5 reacts with con H2SO4 giving A. sulphurous acid B. thionyl chloride C. chlorosulphonic acid D. sulphuryl chloride 18. Based on the first law of thermodynamics, which one of the following is correct? A. For an adiabatic process, ?U = -w B. For an isochoric process, q = +w C. For an isochoric process, ?U = -q D. For a cyclic process, q = -w 19. The electronic configuration of Cr3+ is A. [Ar]3d54s1 B. [Ar]3d24s1 C. [Ar]3d44s2 D. [Ar]3d34s0 20. Which of the following compound would not evolve CO2 when treated with NaHCO3 solution? A. benzoic acid B. salicylic acid C. phenol D. 4-nitro benzoic acid 21. The brown ring test for nitrates depends on A. oxidation of nitric oxide to nitrogen dioxide B. reduction of ferrous sulphate to iron C. oxidising action of sulphuric acid D. the reduction of nitrate to nitric oxide 22. The characteristic not related to alkali metal is A. high ionisation energy B. low melting point C. low electronegativity D. their ions are isoelectronic with noble gases 23. 0054°C. The structure of the compound will be (Given Kfp(H2O) = 1.860 km–1) A. [Pt(NH3)2Cl2]Cl2 B. [Pt(NH3)4]Cl4 C. Pt(NH3)Cl3]Cl D. [Pt(NH3)3Cl]Cl3 24. 2 N HCl is titrated against 0.1 N NaOH solution. The titration was discontinued after adding 50 cm3 of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is A. 21.0 cm3 B. 10 cm3 C. 12 cm3 D. 16.2 cm3 25. Its electonic configuration will be A. 1s22s22p63s23p3 B. 1s22s22p3 C. 1s22s22p63s23p2 D. 1s22s22p4 26. In chromite ore, the oxidation number of iron and chromium are respectively A. +3, +2 B. +2, +6 C. +3, +6 D. +2, +3 27. The spin only magnetic moment of Mn+4 ion is nearly A. 3 BM B. 4 BM C. 5 BM D. 6 BM 28. Gram molecular volume of oxygen at STP is A. 11200 cm3 B. 3200 cm3 C. 22400 cm3 D. 5600 cm3 29. In the periodic table metals usually used as catalysts belong to A. d - block B. f - block C. p - block D. s - block 30. Monobromination of 2-methylbutane gives how many distinct isomers? A. Three B. Two C. One D. Four 31. The complex, [Pt (Py) (lNH3) Br Cl ] will have how many geometrical isomers? A. 3 B. 4 C. 0 D. 2 32. How many chiral carbon atoms are present in 2, 3, 4 - trichloropentane? A. 3 B. 1 C. 2 D. 4 33. The pH of the diluted base is A. between 5 and 6 B. between 6 and 7 C. between 10 and 11 D. between 7 and 8 34. The reaction C2H5ONa + C2H5I ® C2H5OC2H5 + NaI is known as A. Wurtz's synthesis B. Williamson's synthesis C. Kolbe's synthesis D. Grignard's synthesis 35. 06 mole of KNO3 solid is added to 100 cm3 of water at 298 k. The enthalpy of KNO3aq solution is 35.8 kJmol-1. After the solute is dissolved the temperature of the solution will be A. 304 k B. 298 k C. 293 k D. 301 k 36. For one mole of an ideal gas, increasing the temperature from 10°C to 20°C A. increases the average kinetic energy by two times. B. increases the rms velocity by times. C. increases both the average kinetic energy and rms velocity, but not significantly. D. increases the rms velocity by two times. 37. NO2 is not obtained on heating A. Pb(NO3)2 B. Cu(NO3)2 C. AgNO3 D. KNO3 38. The 'B' atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is A. AB2 B. AB C. A3B D. AB3 39. The number of nodal planes present in s * s antibonding orbitals is A. 2 B. 3 C. 0 D. 1 40. IUPAC name of (CH3)3CCl A. n-butyl chloride B. t-butyl chloride C. 3-chloro butane D. 2 chloro 2 methyl propane 41. Mg+2 is isoelectronic with A. Zn2+ B. Cu2+ C. Na+ D. Ca2+ 42. During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into A. NaNO2 B. NaNC C. NaCN D. NaNH2 43. The original compound is A. tertiary alcohol B. primary alcohol C. carboxylic acid D. secondary alcohol 44. One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then, A. kinetic energy of both are equal. B. kinetic energy of O2 < kinetic energy of SO2. C. kinetic energy of O2 > kinetic energy of SO2 . D. None of these 45. Anhydrous ferric chloride is prepared by A. Passing dry HCl over heated iron scrap B. Dissolving Fe(OH)3 in concentrated HCl C. Passing dry Cl2 gas over heated iron scrap D. Dissolving Fe(OH)3 in dilute HCl 46. Which cycloalkane has the lowest heat of combustion per CH2 group? A. cyclopropane B. cyclopontane C. cyclohexane D. cyclobutanc 47. Which one of these is NOT TRUE for benzene? A. It forms only one type of monosubstituted product B. The bond angle between carbon-carbon bonds is 120° C. Heat of hydrogenation of benzene is less than the theoretical value D. There are three carbon-carbon single bonds and three carbon-carbon double bonds 48. In chromite ore, the oxidation number iron and chromium are respectively A. +3, +6 B. +2, +3 C. +2, +6 D. +3, +2 49. Formic acid is a stronger acid than acetic aci This can be explained using A. +I effect B. +M effect C. –I effect D. –M effect 50. Chloroacetic acid is a stronger acid than acetic aci This can be explained using A. +I effect B. - M effect C. - I effect D. + M effect | |