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1997 Chemistry
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(1) A is less stable than B (2) both A and B are unstable (3) A and B are endothermic compounds (4) A is more stable than B |
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| 2. | Which of the following is a man-made element? |
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(1) Np (2) C-14 (3) Ra (4) U |
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| 3. | Which of the following does not give a red precipitate with Fehling's solution? |
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(1) glucose (2) fructose (3) formic acid (4) benzaldehyde |
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| 4. | Rancidity of butter is due to the formation of: |
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(1) butene-I (2) butanoic acid (3) Iactose (4) Iactic acid |
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| 5. | For the reaction A+ B ® C, it is found that doubling the concentration of A increases the rate 4 times, and doubling the concentration of B doubles the reaction rate. What is the overall order of the reaction? |
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(1) 4 (2) 3/2 (3) 3 (4) 1 |
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| 6. | Which is the most abundant metal in the earth's crust? |
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(1) Ca
(2) Na (3) Fe (4) AI |
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| 7. | Domestic cooking gas consists of mostly: |
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(1) butane and isobutane (2) methane and ethane (3) ethylene and carbon monoxide (4) acetylene and hydrogen |
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| 8. | Which of the following does not give a precipitate with excess of NaOH? |
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(1) AgNO3 (2) HgCI3 (3) ZnSO4 (4) FeSO4 |
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| 9. | The hydrogen ion concentration of 0.2 M CH3COOH which is 40% dissociated is: |
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(1) 0.12 M (2) 0.08 M (3) 0.4 M (4) 0.8 M |
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| 10. | When ethyne is treated with alkaline KMnO4 it gives |
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(1) oxalic acid (2) CO2 and H2O (3) acetic acid (4) formic acid |
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| 11. | The catalyst used in Rosenmund reduction is: |
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(1) Anhydrous AICI3 (2) HgSO4 (3) Pd/BaSO4 (4) Anhydrous ZnCI2 |
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| 12. | Hydrolysis of benzonitrile by dilute HCI yields: |
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(1) benzoic acid (2) aniline (3) benzaldehyde (4) benzamide |
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| 13. | German silver is an alloy of: |
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(1) Cu, Zn, Ni
(2) Cu, Sn, AI (3) Fe, Cr, Ni (4) Cu, Zn, Ag |
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| 14. | The pH of a solution whose [H+] is 3.0 x 10-4 M is: |
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(1) 3.75 (2) 4.45 (3) 3.523 (4) 4.36 |
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| 15. | What is the wavelength associated with an electron moving with a velocity of 106 m/s? (given: h = 6.63 x 10-34 Js and m = 9.11 x 10-31 kg) |
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(1) 72.7 nm (2) none of these (3) 7.27 nm (4) 0.727 nm |
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| 16. | When salicylic acid is treated with bromine water, it gives: |
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(1)
2, 3, 4-tribromophenol
(2) 3, 4, 5-tribromosalicylic acid (3) 3, 6-dibromosalicylic acid (4) 2,4,6-tribromophenol |
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| 17. | The chemical name of salol is: |
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(1) Sodium salicylate (2) acetyl salicylic acid (3) methyl salicylate (4) phenyl salicylate |
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| 18. | Carbylamine test is used in the detection of: |
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(1) aromatic primary amine (2) both aliphatic and aromatic primary amines (3) aliphatic secondary amine (4) aliphatic primary amine. |
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| 19. | Which of the following is not present in nucleotide? |
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(1) cytosine (2) guanine (3) tyrosine (4) adenine |
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| 20. | Which one of the following conditions will increase the voltage of the cell, represented by the equation Cu(s) + 2Ag+ (aq) ® Cu+2 (aq) + 2 Ag(s): |
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(1) increase in the concentration of
Cu+2 ions (2) increase in the concentration of Ag+ ions (3) increase in the dimensions of copper electrode (4) increase in the dimensions of silver electrode |
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| 21. | Which of the following compounds is used as refrigerant? |
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(1) CHCI3 (2) CCI2F2 (3) CF4 (4) CCI4 |
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| 22. | In which of the following coordination compounds, the central metal atom obeys the EAN rule? |
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(1) K3Fe(CN)6 (2) All (3) Cu(NH3)4SO4 (4) K4Fe(CN)6 |
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| 23. | Toilet soap is a mixture of: |
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(1) sodium salts of higher fatty
acids (2) potassium palmitate and sodium stearate (3) sodium and calcium salts of higher fatty acids (4) potassium salts of higher fatty acids. |
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| 24. | The powerful explosive RDX is formed during the nitration of: |
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(1)
glycerol (2) urotropine (3) toluene (4) phenol |
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| 25. | The sequence in the structure of nucleic acid is |
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(1) base + phosphate + pentose (2) all are correct (3) pentose + base + phosphate group (4) phosphate group + pentose + base |
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| 26. | Molisch's test is answered by: |
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(1) sucrose (2) all carbohydrates (3) glucose (4) fructose |
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| 27. | The total number of isomeric alcohols with molecular formula C4H9OH is: |
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(1) 5 (2) 2 (3) 3 (4) 4 |
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| 28. | Ethanol is soluble in water due to: |
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(1) hydrogen bonding
(2) ethyl group (3) its neutral nature (4) dissociation in water |
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| 29. | A 0.2 M solution of formic acid is 3.2 % ionised. Its Ionisation constant is: |
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(1) 2.1 x 10-4 (2) 2.1 x 10-6 (3) 4.8 x 10-5 (4) 9.6 x 10-3 |
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| 30. | Optical glass contains a high percentage of: |
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(1) AI2O3 (2) MgO (3) PbO (4) B2O3 |
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| 31. | Which of the following compounds does not react with sodium bisulphite? |
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(1) acetophenoic
(2) benzaldehyde (3) acetaldehyde (4) acetone |
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| 32. | Of the following which has the largest ionic radius? |
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(1) Na+ (2) Li+ (3) Cs+ (4) Mg+2 |
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| 33. | The empirical formula of a compound is CH2O. Its molecular weight is 180. The molecular formula of the compound is: |
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(1) C3H6O3 (2) C6H12O6 (3) C5H10O5 (4) C4H8O4 |
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| 34. | 2g of aluminium is treated separately with excess of dilute H2SO4 and excess of NaOH. The ratio of the volumes of hydrogen evolved is: |
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(1) 1 : 1
(2) 2 : 3 (3) 1 : 2 (4) 2 : 1 |
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| 35. | A mixture of calcium acetate and calcium benzoate on dry distillation gives: |
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(1) benzophenone
(2) benzaldehyde (3) acetaldehyde (4) acetophenone |
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| 36. | The enthalpy of neutralisation of acetic acid and sodium hydroxide is-55.4kJ. What is the enthalpy of ionisation of acetic acid? |
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(1) + 1.9 KJ (2) - 1.9 KJ (3) - 5.54 KJ (4) + 5.54 KJ |
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| 37. | A basic lining is given to a furnace by using: |
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(1) Limestone
(2) calcined dolomite (3) silica (4) haematite |
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| 38. | The quantitative relationship between reaction rate and concentration was established by : |
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(1) Arrhenius (2) Ostwald (3) Le Chatelier (4) Guldberg and waage |
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| 39. | The equilibrium constant Ke for the reaction H2+ I2 Û 2HI at 700 K is 49. What is the equilibrium constant for the reaction, HI Û 1/2 H2 +1/2 I2 at the same temperature? |
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(1) 1.43 (2) 0.143 (3) 49 (4) 0.02 |
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| 40. | A crystal of sodium chloride which has sodium ions and chloride ions missing from the lattice points is said to exhibit: |
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(1) surface defect (2) Frenkel defect (3) Schottky defect (4) lattice defect. |
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| 41. | The process of zone refining is used in the purification of: |
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(1) AI (2) Si (3) Cu (4) Ag |
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| 42. | The IUPAC name for tert-butyl chloride is: |
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(1) 2-Chlorobutane (2) 4-Chlorobutane (3) 2- Chloro-2-methylpropane (4) 1-Chloro-3-methypropane |
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| 43. | Monomer of trioxan is: |
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(1) formaldehyde
(2) isoprene (3) acetone (4) acetaldehyde |
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| 44. | Paracetamol is alan: |
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(1) analgesic (2) both antipyretic and analgesic (3) antimalarial (4) antipyretic |
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| 45. | An example of an associated colliod is: |
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(1) vegetable oil (2) milk (3) rubber latex (4) soap solution |
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| 46. | When 4 g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is the enthalpy of formation of ferric oxide ? ( At, wt. Fe = 56) |
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(1) -40.99 kJ (2) +819.8 kJ (3) -81.98 kJ (4) -819.8 kJ |
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| 47. | This NaOH C6H5COCI +C6H5OH ® C6H5COOC6H5+HCl reaction is called: |
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(1) Etard reaction (2) Schotten-Baumann reaction (3) Grignard reaction (4) Sandmeyer reaction. |
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| 48. | The outer electronic structure of 3s23p5 is possessed by: |
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(1) CI (2) O (3) Ar (4) Br |
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| 49. | The percentage s-character of the hybrid orbitals in methane, ethene, and ethyne are....... respectively. |
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(1) 10, 20, 40 (2) 50, 75, 100 (3) 25, 50, 75 (4) 25, 33, 50 |
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| 50. | Which of the following is an example of Lewis acid? |
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(1) C2H5ONa (2) FeCI3 (3) HCI (4) HCOOH |
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| 51. | In a reaction A + B Û C+D the initial concentration of A and B were 0.9 mol dm-3 each. At equilibrium, the concentration of D was found to be 0.6 mol dm-3. What is the value of equilibrium constant for the reaction? |
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(1) 4
(2) 8 (3) 3 (4) 9 |
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| 52. | A first order reaction is half completed in 45 minutes. How long does it need for 99.9% of the reaction to be completed ? |
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(1) 10 hours (2) 20 hours (3) 5 hours (4) 71/2 hours |
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| 53. | The solubility product of silver chloride is 1.8 x10-10 at 298 K. The solubility of AgCI in 0.01 M HCI solution in mol/dm3 is: |
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(1) 3.6 x 10-8 (2) 2.4 x 10-9 (3) 1.8 x 10-8 (4) 0.9 x 10-9 |
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| 54. | Which of the following compounds is formed when benzamide is warmed with bromine and alkali ? |
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(1) aniline (2) benzene diazonium chloride (3) bromobenzene (4) benzene |
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| 55. | Which of the following is an unsaturated acid? |
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(1) stearic
(2) linoleic (3) Lauric (4) myristic |
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| 56. | The two polypeptide chains present in insulin contain the following number of amino acids: |
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(1) 18, 12 (2) 20, 21 (3) 21, 30 (4) 25, 16 |
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| 57. | Schiff's reagent is: |
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(1) roseaniline solution in water
decolourised by SO2 (2) resorcinol solution in dilute HCI (3) ammoniacal silver nitrate (4) alkaline CuSO4stablised by Rochelle salt |
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| 58. | The Purine base present in RNA is: |
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(1) thymine (2) guanine (3) uracil (4) cytosine |
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| 59. | Glocose cannot be classified as: |
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(1) an oligosaccharide
(2) an aldose (3) a hexose (4) a carbohydrate |
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| 60. | Ebonite is: |
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(1) synthetic rubber (2) natural rubber (3) polypropene (4) highly vulcanized rubber |
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