BGAS Grade 2/3 Model Multiple Choice question & answers - Part 3

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 51. Atom acquire the electric charged are

a) Atomisation 

b) Solaration

c) Polarisation

d) Electromation

 




52. The British standard for preparation of steel substrate? 

a) BS 3900 

b) IGE SR 21 

c) BS 7079 

d) ISO 8501 

 

53. The two factors to consider when inspecting a surface preparation 

a) Degree of cleanliness and time taken 

b) Surface profile and material condition 

c) Surface profile and degree of cleanliness 

d) Dependent upon the material thickness 

 

54. Which is not a surface preparation cleaning methods in before paint application? 

a) Dry abrasive blast cleaning 

b) Hand and power tool leaning 

c) Flame cleaning 

d) Light blast cleaning 

 

55. Which pressure suitable for dry blasting? 

a) 20psi 

b) 100psi (Pounds per Square Inch)  (1 Psi = 6.89 kPa = 0.068 Bar)

c) 220psi 

d) 450psi 

 

56. When using a Venturi Nozzle at 100 psi the abrasive exits at approximately what speed? 

a) 200 mph 

b) 450 mph 

c) 1200 mph 

d)100 mph 

 

57. Sand is not permitted as a dry blast abrasive, as directed by 

a) BGC/PS/CW5 

b) BS 7079 Part A 

c) COSHH (Control of Substances Hazardous to Health)

d) BS 410 

 

58. Which standard is not permitted as a Sand blast abrasive? 

a) BS 4800 

b) BS 7079 Part A 

c) SI 1657 

d) BS 410 

 

59. Which one is non-metallic abrasive? 

a) Iron Silica 

b) Steel Shot 

c) Steel Grit 

d) Grit-Shot Mix 

 

60. Copper slag is a 

a) Metallic 

b) None metallic 

c) Agriculture product 

d) Dry sand 

 

 

61. Copper slag is a 

a) Metallic 

b) Mineral 

c) Agriculture product 

d) Dry sand 

 

62. Copper slag is a 

a) Recyclable 

b) Expendable 

c) Reuse 

d) Angular chilled iron 

 

63. Which abrasive shattering on impact release silica? 

a) Sand 

b) Garnet 

c) Copper 

d) Angular chilled iron

 

64. Which is grit form? 

a) Random 

b) Sharp 

c) Amorphous

d) All the above 

 

65. Metallic abrasive are 

a) Expendable 

b) Recyclables 

c) Silica free

d) None of the above 

 

66. Copper slag is also known as 

a) Garnet 

b) Black sand 

c) Iron silica 

d) Steel Grit 

 

67. Colour of Copper slag is 

a) Black shining 

b) Brown 

c) Red 

d) Yellow 

 

68. The most common type of abrasive used for British Gas site work is 

a) Copper slag 

b) Grit & Shot mix 

c) Garnet 

d) Angular Chilled Iron 

  

69. Abrasive used on site for British Gas projects must be 

a) Mixed with sand, to reduce cost 

b) Stored correctly prior to use 

c) Expendable 

d) Used up to a Maximum of three times only 

 

70. How many times can Garnet be used as abrasive for BGas site use? 

a) Upto 3 times 

b) None 

c) It must be expendable 

d) 20 times 

 

71. Angular chilled iron is formed from 

a) Metallic shot 

b) Metallic grit 

c) Metallic gritand Metallic shot 

d)Garnet 

 

72. Metallic shot is 

a) Shatters 

b) Spherical 

c) Random 

d) Cutting Edges 

 

73. Irregular profile are given 

a) Grit 

b) Shot 

c) Girt and shot 

d) Garnet 

 

74. Which type of abrasive give more uniform profile? 

a) Metallic Shot 

b) Steel Grit 

c) Copper Slag 

d) Metallic Shot & Grit Mixed 

 

75. Which type of abrasive used for controlling Rash Rusting? 

a) Metallic Shot 

b) Steel Grit 

c) Copper Slag 

d) Metallic Shot & Grit Mixed 

 

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