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1996 Chemistry
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(1) FeSO4.7H2O (2) FeSO4(NH4)2SO4.6H2O (3) MgSO4.7H2O (4) Fe(SO4)3(NH4)2SO4.6H2O |
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| 2. | Asbestos is: |
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(1) Calcium silicate (2) Magnesium silicate (3) Calcium-magnesium silicate (4) Alumina |
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| 3. | Nichrome used as heating element in hot-air oven is an alloy of: |
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(1) Ni and Cr (2) Ni and Fe (3) Fe and Cr (4) Ni, Fe and Cr |
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| 4. | The indicator used to detect the end point in the titration of a weak acid and strong base (pH-8-10) is: |
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(1) Methyl orange (2) Methyl red (3) Phenolphthalein (4) Litmus |
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| 5. | The monomer unit of polyvinyl chloride unit has the formula: |
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(1) CH2=CH2 (2) CH3=CH2CI (3) CH2=CHCI (4) CHCI=CHCI |
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| 6. | According to Markownikoff's rule, when hydrogen chloride adds to an unsymmetrical alkene, the hydrogen of HX attaches to: |
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(1) Carbon with least number of
hydrogens (2) Carbon with most number of hydrogens (3) Carbon at the end of the molecule (4) Carbon in the middle of the molecule |
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| 7. | Which fraction of the petroleum corresponds to kerosene oil? |
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(1) C1-C4 (2) C5-C9 (3) C10-C12 (4) C15-C18 |
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| 8. | Phenol reacts with bromine water to give |
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(1) 2-bromophenol
(2) 4-bromophenol (3) 2,4-dibromophenol (4) 2,4,6-tribromophenol |
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| 9. | Which one of the following gives iodoform test? |
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(1) Formaldehyde (2) Benzaldehyde (3) Ethanol (4) Benzyl alcohol |
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| 10. | Amino acids are produced by the hydrolysis of: |
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(1) Carbohydrates (2) Fats (3) Nuclei acids (4) Proteins |
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| 11. | Froth flotation process is primarily used to concentrate......ores |
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(1) Chloride (2) Silicate (3) Carbonate (4) sulphide |
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| 12. | Stainless steel is an alloy of iron with: |
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(1) 12% Cr, 1% Ni (2) 2% Cr, 3% C (3) 10% Ni, 2% Mn (4) 8% Cr, 5% Mn |
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| 13. | Presence of halogens is organic compounds is detected by: |
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(1)
Iodoform test (2) Silver nitrate test (3) Millon's test (4) Beilstein's test |
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| 14. | Number of ions present in K3[Fe(CN)6] are: |
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(1) 2 (2) 3 (3) 4 (4) 10 |
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| 15. | During the extraction of copper from chalcopyrites, the matter obtained is mainly. |
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(1) Cuprous sulphide (2) Cuprous oxide (3) Mixture of cuprous oxide and sulphide (4) Copper metal |
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| 16. | Potassium metasulphite used as a food preservative is: |
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(1) A positive catalyst (2) A negative catalyst (3) A homogeneous catalyst (4) A heterogeneous catalyst |
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| 17.` | Highest pH (14) is given by: |
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(1) IN HCI (2) IN NaOH (3) 0.1M NaOH (4) IM H2SO4 |
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| 18. | The free energy change due to a reaction is zero when: |
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(1) The reactants are completely
consumed (2) The system is at equilibrium (3) A catalyst is added (4) The reactants are initially mixed |
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| 19. | For the reaction CI2(g) + 2 NO (g) ® 2 NOCI (g) doubling the concentration of both reactants increases the rate by a factor of eight. If only the concentration of CI2 is doubled, the rate increases by a factor of two, The order of the reaction with respect to NO is: |
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(1) 1 (2) 2 (3) 0.5 (4) 3 |
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| 20. | In the Daniel cell constructed in the laboratory, the voltage observed was 0.9 V instead of 1.1 V of the standard cell. A possible explanation is: |
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(1) [Zn2+] > [Cu2+] (2) [Zn2+] < [Cu2+] (3) The Zn electrode has twice the surface of Cu electrode (4) Mole ratio of Zn2+ : Cu2+ is 2 :1 |
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| 21. | The compound which does not leave any residue on heating is: |
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(1) AgNO3 (2) CuSO4 (3) NH4NO3 (4) NaNO3 |
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| 22. | Oxidation number of P in H3PO2 is: |
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(1) +5 (2) +3 (3) +2 (4) +1 |
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| 23. | The H-O-H bond angle in water is: |
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(1) 1090280 (2) 900 (3) 1800 (4) 1040500 |
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| 24. | Which of the following is a complex halide ion? |
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(1) HF (2) KBr (3) KI3 (4) CCI4 |
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| 25. | The IUPAC name of CH2= CHCH(CH3)2 is: |
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(1) 1, 1-dimethyl-2-propene (2) 3-methyl-1-butene (3) 2-vinyl propene (4) I-isopropyl ethylene |
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| 26. | Usually ionic compounds are soluble in polar solvents and covalent compounds is non-polar solvents. However covalent compounds dissolve in polar solvents like water due to: |
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(1) H-bond formation (2) Proton transfer reaction (3) Their behaviour as Lewis acids (4) Any of the above |
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| 27. | Nitrogen atom has three unpaired electrons because of: |
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(1) Aufbau principle (2) Pauli's Exclusion principle (3) Uncertainly principle (4) Hund's rule |
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| 28. | Which of the following set of quantum numbers is not possible? |
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m1 ms (1) 3 2 1 +1/2 (2) 3 2 1 - 1/2 (3) 3 2 1 0 (4) 3 2 -1 + 1/2 |
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| 29. | The magnetic quantum number m1 is fixed by the azimulthal quantum number 1. If 1=2, the type and number of orbitals are indicated by: |
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(1) 3s, 1 (2) 3P,3 (3) 3d,5 (4) 4f,7 |
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| 30. | The molecule with highest % ionic character is: |
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(1) HF (2) HCI (3) HBr (4) HI |
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| 31. | Assuming sweetness of the cane sugar to be 10, the sweetness of glucose is |
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(1) 5 (2) 15 (3) 7.5 (4) 12.5 |
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| 32. | Nitric acid is manufactured by |
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(1)
Ostwald's process (2) Deacon's process (3) Contact process (4) Lablanc process |
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| 33. | The percentage of nitrogen in urea is: |
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(1) 25 (2) 46 (3) 54 (4) 59 |
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| 34. | The chemical formula of pyrophosphoric acid is |
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(1) H4P2O7 (2) HPO3 (3) H3PO4 (4) H3PO3 |
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| 35. | Mixture of white dnd red phosphorus can be separated by using: |
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(1) Iodine (2) Kerosene (3) NaOH (4) HNO3 |
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| 36. | In nucleic acids the sequence is |
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(1) Base-sugar-phosphate (2) Base-phosphate-sugar (3) Phosphate-base-sugar (4) Sugar-base-phosphate |
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| 37. | Which of the following is an example of heterogeneous catalyst? |
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FeCl3 (1) 2H2O2(aq) ® 2H2O+O2 MnO2 (2) 2H2O2(aq) ® 2H2O+O2 H+ (3) Sucrose + H2O ® glucose+fructose NO (4) 2SO2+O2+2H2O ® 2H2SO4 |
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| 38. | Catalyst used in Friedel-Craft's reaction is |
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(1) Anhydrous aluminium chloride (2) Sodium (3) Ferric chloride (4) Zinc oxide |
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| 39. | Which of the following can give a buffer solution? |
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(1) HCI + NaOH (2) CH3COONa +HCI (3) HCOOH + HCOONa (4) H2SO4 + Na2SO4 |
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| 40. | In an FCC metal the atoms are in physical contact along |
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(1) Body diagonal (2) Face diagonal (3) Cube edge (4) All the above directions |
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| 41. | A real gas tends to behave more ideally at: |
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(1) High temperature and high
pressure (2) High temperature and low pressure (3) Low temperature and high pressure (4) Low temperature and low pressure |
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| 42. | The half-life of a radioactive isotope is 1.5 hours. If its initial mass is 32 grams, the mass that remains after 6 hours is |
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(1) 2g (2) 4g (3) 8g (4) 16g |
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| 43. | The shape of atomic orbitals is given by |
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(1) Principal quantum number (2) Subsidiary quantum number (3) Magnetic quantum number (4) Spin quantum number |
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| 44. | High purity hydrogen is produced by the reaction |
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(1) (2) (3) (4) |
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| 45. | H2O2 is |
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(1) An oxidizing agent
(2) A reducing agent (3) Both an oxidizing and a reducing agent (4) Neither oxidizing nor reducing agent |
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| 46. | Calculate DH0 for the reaction H2O (l) ®H2 (g) +O2(g) given 2 H2 (g) +O2(g) ®2 H2O (l) H=-571.6 kJ |
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(1) - 285.8 kJ (2) 285.8 kJ (3) -571.6 kJ (4) 571.6 kJ |
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| 47. | P2O5 is an anhydride of |
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(1) H2PO3 (2) H3PO4 (3) HPO3 (4) H4P2O7 |
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| 48. | Identify the reaction which is endothermic: |
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(1) HCI (g) + H2O (l)
® HCI (aq) (2) NH4NO3(s) +H2O (l) ®NH4NO3(aq) (3) H2SO4(l) +H2O (l) ®H2SO4(aq) (4) NaOH(s) +2H2O (l) ®NaOH(aq) |
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| 49. | In which of the following systems at equilibrium and room temperature, doubling the volume will shift the reaction to the right? |
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(1) PCI5(g) « PCI3(g)
+ CI2(g) (2) N2(g) + 3 H2(g) « 2NH3(g) (3) 2NOCI(g) + O2(g) « 2CO2(g) (4) H2(g) + CI2(g) « 2 HCI(g) |
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| 50. | For which of the following reactions kp and ke are numerically equal? |
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(1) H2 (g) + I2
(s) « 2HI (g) (2) H2 (g) + CI2 (g) « 2HCI (g) (3) 2 NOCI (g) « 2HO(g) +CI2 (g) (4) COCI2(g) « 2 HCI (g) |
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| 51. | An example of an amino acid containing benzene ring is : |
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(1)
Alanine (2) Tyrosine (3) Lysine (4) Serine |
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| 52. | Among the naturally occurring carbohydrates, furanose ring is found in the |
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(1) Galactose unit of lactose (2) Glucose unit of cellulose (3) Fructose unit of cane sugar (4) Glucose unit of cane sugar |
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| 53. | Two other useful by-products of Solvay pressure are: |
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(1) NaHCO3 and CO2 (2) NH4CI and CaO (3) NaHCO3 and NH4CI (4) CaO and CO2 |
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| 54. | Aromatic primary amine when treated with cold HNO2 gives: |
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(1) Benzyl alcohol
(2) Nitrobenzene (3) Diazonium salt (4) Benzene |
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| 55. | Functional group present in cresol is: |
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(1) Alcoholic-OH (2) Aldehydic-CHO (3) Phenolic-OH (4) Carboxylic-COOH |
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| 56. | During the titration of KMnO4 with oxalic acid in acid medium, the oxidation number of MN+7 changes to: |
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(1) +5 (2) +3 (3) +2 (4) 0 |
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| 57. | In the reaction of NO-3 ions with Cu turnings and cone, H2SO4 the blue solution formed is due to |
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(1) Cu(NO3)2 (2) CuSO4 (3) Cu(HSO4)2 (4) Cu(NO2)2 |
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| 58. | Acetylene reacts with HBr to give |
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(1) CH3Br (2) C2H5Br (3) Ethylene bromide (4) Ethylidene bromide |
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| 59. | Aldehydes and ketones can be distinguished by: |
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(1) Bromoform (2) Tollen's test (3) Molisch test (4) Solubility in water |
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| 60. | Ethyl bromide can be obtained by the action of H Br on |
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(1) Ethanol (2) Ethane (3) Propene (4) Acetylene |
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