Chemistry XII - P block elements

1. To remove the impurity of Fe2O3 from bauxite ore which process is used: a) Serpeck's process b) Hoope's process c) Hall's process d) Baeyer's process

2. Mixture of calcium silicate and calcium aluminate is called: a) Slag b) Ore c) Gangue d) Matte

3. The correct match for Molten Metallic Chlorides is: a) Electrolytic in nature b) Non electrolytic in nature c) Neutral in nature d) Basic in nature

4. P - block elements includes elements of: a) Group I - A & II - A b) Group III - A & VIII - A c) Group I - B to VII - B d) All of these

5. The formula for Boric acid is: a) B2O3 b) Na2B4O7 c) H3BO3 d) None of these

6. Cryolite is an ore of: a) Zinc b) Aluminium c) Copper d) Iron

7. To remove the impurity of SiO2 from bauxite ore which process is used: a) Hall's process b) Hoope's process c) Baeyer's process d) Serpeck's process

8. The general electronic configuration of P-block elements is represented by: a) ns1, ns2 b) ns2, np6 c) ns2, np1- 6 d) ns1, np3

9. The total number of electrons in the outermost shell of p - block elements varies from: a) 1 to 6 b) 3 to 8 c) 2 to 6 d) 1 to 8

10. Atoms with the same number of valence electrons are expected to be: a) Physically similar b) Chemically similar c) Same electronic configuration d) None of these

11. Cryolite is an ore of: a) Aluminum b) Copper c) Zinc d) Chromium

12. The correct match for Non Metallic Chlorides: a) Non electrolyte b) Neutral c) Electrolytes d) Basic electrolyte

13. The elements of periodic table are mainly classified as: a) Transition metals only b) Gases only c) Metals & non- metals d) Liquids only

14. The chemical formula for Borax is: a) Na2B2O4 b) Na3B3O3 c) Na2B4O7.10H2O d) Na2B3O4.7H2O

15. The process of extraction of a metal from its ore is called as: a) Filtration b) Metallurgy c) Refining d) Smelting

16. The electrolysis of Alumina produces: a) 98 % pure Aluminium b) 99.9 % pure Aluminium c) 90 % pure Aluminium d) 99 % pure Aluminium

17. Aluminium ions bear positive charge. a) False b) True

18. When Aluminium is treated with dilute 32; Sulphuric acid then: a) Oxygen gas evolves b) Sulphur dioxide gas is produced c) Hydrogen gas is produced d) No gas evolves

19. Non-Metals have a tendency to lose electrons. a) True b) False

20. The correct match for Oxides of Metal is: a) Electrolytic in nature b) Neutral in nature c) Basic in nature d) Non electrolytic in nature

21. Potash Alum is an example of: a) Double salt b) Double 32; sulphate of mono-Valent and tri-Valent metals c) Hydrated salt d) All of these

22. In thermite process Aluminium reacts as: a) Oxidizing agent b) Neutral atom c) Reducing agent d) None of these

23. The correct match for Metals ions from the given options is: a) Coins b) Absorb light c) Neutral d) Positive charge

24. The reduction of metal oxides involving Aluminium as reducing agent is termed as: a) Thermite process b) Neutralization c) Electrolysis d) Filtration

25. In Bayer's process bauxite is dissolved in 45% aqueous solution of a) Copper Hydroxide b) Potassium Hydroxide c) Sodium Hydroxide d) Calcium Hydroxide

26. The structure of Graphite is: a) Basic tetrahedral unit b) Basic hexagonal ring c) Linear structure d) Open chain carbon structure

27. Which of the following statement is related to Sulphuric acid: a) High boiling point & Viscosity b) Oil of 32; vitriol c) All of these d) Diprotic and hygroscopic

28. Metal ions bear charge a) Negative b) Neutral c) Both d) Positive

29. Bauxite ore contains impurities : a) Carbonates b) Fe2O3 c) Both SiO2 & Fe2O3 d) SiO2

30. The formula for Oleum is: a) H3SO4 b) H2S2O4 c) H2S2O7 d) H2SO7

31. Sulphuric acid is prepared by: a) Contact method b) Nelson's Cell c) Solvay process d) Hall's process

32. In thermite process, Aluminium acts as: a) Remains neutral b) Reducing agent c) None of these d) Oxidizing agent

33. The general electronic configuration of group V - A elements is: a) ns2, np3 b) ns2, np6 c) ns1, np3 d) ns2, np5

34. The crystalline allotrope of carbon is: a) Diamond b) Charcoal c) Lampblack d) Coke

35. Halls process is used for: a) Atomic fusion b) Manufacturing of Steel c) Extraction of Aluminum from Bauxite ore d) Preparation of Sulphur

36. Nitric acid is prepared commercially by the: a) Oxidation of Ammonia b) Reduction of Ammonia c) Neutralization of Ammonia d) Hydration of Ammonia

37. The correct match for Oxides of non Metal from the given options is: a) Non electrolytic in nature b) Acidic in nature c) Neutral in nature d) Electrolytic in nature

38. Ostwald's process is used for: a) Manufacturing of Ammonia b) Preparation of Nitric acid c) Commercial preparation of Sulphuric acid d) Preparation of plastic 32; Sulphur

39. Nitric acid is a: a) Monoprotic acid b) Diprotic acid c) Reducing agent d) None of these

40. Aqua-regia is a mixture of( by volume ): a) One part of hydrochloric acid & one part of Nitric acid b) Two parts of Sulphuric acid & one part of Nitric acid c) One part of Nitric acid & three parts of hydrochloric acid d) Equal parts of hydrochloric acid and 32; Sulphuric acid

41. Carbon reacts with Aluminium then: a) It forms carbonate b) It forms oxide c) It forms carbide d) It forms hydroxide

42. The formula for red lead is: a) PbO2 b) Pb3O4 c) PbO d) Pb2O

43. The chemical formula for Chrome red pigment is: a) PbCr b) Pb2CrO3 c) PbCrO2 d) Pb2CrO4

44. None-Metals react with water at room temperature. a) True b) False

45. The correct match for Non Metals from the given options is: a) Absorb light b) Neutral c) Positive charge d) Coins

46. when Nitric acid is treated with organic compounds it replaces one or more hydrogen atoms, this action of Nitric acid is called as: a) Oxidation reaction b) Reducing property c) Nitrating property d) Dehydration

47. In the structure of Diamond the carbon -carbon bond energy is 347 KJ / mole due to this: a) Diamond is shiny b) Diamond forms polar covalent bond c) Diamond has Linear structure d) Diamond is hard and posses high melting point

48. Bauxite is an ore of: a) Steel b) Iron c) Aluminium d) Copper

49. Kipp's apparatus is used for the production of: a) SO2 b) SO3 c) H2S d) HCL

50. When carbon reacts with metals it forms: a) Metallic Carbide b) Carbon dioxide c) Carbon monoxide d) None of these

51. The process use to extract Aluminium from its ore is called a) Open Hearth process b) Thermite process c) Hall's process d) Bessemer Process

52. The electro-negativity is related to atomic size, It is : a) Inversely proportional b) Directly proportional c) Equal to d) None of these

53. Metal have tendency to: a) Lose electrons b) Gain electrons c) Lose protons d) Gain neutron

54. The correct match for the usage of Aluminium from the given options is: a) Absorb light b) Positive charge c) Neutral d) Door

55. The hardest substance known is: a) Graphite b) Iron c) Steel d) Diamond

56. Minerals which contain sufficient quantity of a metal and mixed with earthy materials are called: a) Rust b) Ores c) Solution d) Slag

57. Thermite process is mainly used for: a) High temperature Welding b) Atomic plant c) Making iron sheets d) Obtaining Sulphur

58. The formula for cryolite is: a) Na2 Al F b) Al2O3 c) Na3 Al F2 d) Na3ALlF6

59. The structure of Sulphuric acid is: a) Trigonal b) Tetrahedral c) Hexa cyclic d) Linear

60. Aluminium is not used in paint industry. a) True b) False

61. Which of the following is a metal and exists in liquid state: a) Mercury b) Chlorine c) Bromine d) Helium

62. Oxides of Metals are: a) Neutral in nature b) Basic in nature c) Acidic in nature d) All of these

63. The most stable form of 32; Sulphur is: a) Rhombic Sulphur b) Prismatic Sulphur c) Plastic Sulphur d) All of these

64. Which of the following is used as dehydrating and drying agent: a) HCL b) HNO3 c) H2SO4 d) H3PO4

65. When Al is treated with nitrogen then: a) Al2N2 is produced b) AlN is produced c) Al2N is produced d) Al4N6 is produced

66. Oxides of non-metals are a) Neutral in nature b) Basic in nature c) Acidic in nature d) Amphoteric in nature

67. The reaction of chlorine with water forms HCL & HOCL. This particular reaction is known as: a) Oxidation reaction b) Reduction Process c) Displacement reaction d) Self - Oxidation - Reduction reaction

68. The structure of Diamond is: a) Tetrahedral b) Hexagonal c) Trigonal d) Layer like structure

69. Aluminium is the member of : a) Group III - A b) Transition Element c) Group V - A d) Group I - A

70. Metals atoms are bonded by : a) Metallic Bond b) Hydrogen bond c) Covalent bond d) Co-ordinate covalent bond

71. Metallic chlorides are acts as electrolyte in molten state. a) True b) False

72. In Ostwald's process, Ammonia is 32; oxidized to NO in the presence of catalyst: a) Nickel b) Platinum c) Palladium d) Vanadium Penta oxide

73. In the electrolysis of Alumina, Cryolite is used for: a) To increase the electrical conductivity of Alumina b) To reduce the viscosity of Alumina c) To raise the melting point of Alumina d) Removing impurities

74. Which of the following metal forms a layer by own of its oxide: a) Na b) Cu c) Al d) None of these

75. In contact process the impurities of arsenic are removed by: a) Fe(OH)3 b) Al(OH)3 c) Fe2O3 d) Cr2O3

76. Kaolin is an ore of: a) Aluminum b) Iron c) Steel d) Copper

77. When Al is added with NaOH solution then: a) No reaction takes place b) Hydrogen gas is evolved c) Water is produced d) Oxygen gas is evolved

78. Metals have greater tendency to: a) Form covalent molecules b) Gain electrons c) Oxidizing agents d) Lose electrons & reduction property

79. Graphite is used in the preparation of electrodes because: a) It has hexagonal structure b) It is non - metal c) It is a good conductor of electricity d) it has Sp2 hybridization

80. Top elements of P-block are: a) Reactive metals b) Reactive non - metals c) Less reactive metals d) Mostly metalloids

81. The 32; incorrect statement about 32; Sulphuric acid is: a) Oxidizing agent b) Highly viscous c) Reducing agent d) None of these

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