Quiznetik
Building Materials | Set 5
1. Bituminous fells are used for
A. Covering A.C. sheets
B. Covering sloping roofs
C. D.P.C.
D. None to these
Correct : A. Covering A.C. sheets
2. Quick setting cement is produced by adding
A. Less amount of gypsum in very fine powdered form
B. More amount of gypsum in very fine powdered form
C. Aluminium sulphate in very fine powdered form
D. Pozzolana in very fine powdered form
Correct : C. Aluminium sulphate in very fine powdered form
3. Pick up the correct statement from the following:
A. The substance which consists of one primary chemical, is known as monomer
B. The polymer consists of thousands of monomers joined together
C. The polymer molecule is called macro-molecule
D. All the above
Correct : D. All the above
4. The normal curing period for lime mortar, is:
A. 1 day
B. 3 days
C. 7 days
D. 10 days
Correct : C. 7 days
5. German silver is an alloy of
A. Zinc, lead and nickel
B. Silver, gold and lead
C. Copper, nickel and zinc
D. Copper, brass and zinc
Correct : C. Copper, nickel and zinc
6. For the manufacture of stainless steel, steel is mixed with
A. Chromium
B. Nickel
C. Tungsten
D. None of these
Correct : A. Chromium
7. The presence of original rounded surface on the manufactured piece of timber, is called
A. Wane
B. Torn grain
C. Diagonal grain
D. Chipmark
Correct : A. Wane
8. In paints, the pigment is responsible for
A. Durability
B. Colour
C. Smoothness
D. Glassy face
Correct : B. Colour
9. The operation of removal of impurities or clay adhering to iron ores, is known as
A. Dressing
B. Calcination
C. Roasting
D. Smelting
Correct : A. Dressing
10. Dry rot
A. Cracks the timber
B. Reduces the strength of timber
C. Reduces the timber to powder
D. Spoils the appearance of timber
Correct : C. Reduces the timber to powder
11. Pozzolana (or surkhi) is used in lime
A. To impart hydraulicity
B. To prevent shrinkage
C. To decrease the cost of construction
D. To decrease the setting time
Correct : A. To impart hydraulicity
12. The size of modular bricks, is
A. 10 × 10 × 9 cm
B. 19 × 9 × 9 cm
C. 22.5 × 10 × 8.5 cm
D. 22.5 × 8.0 × 9 cm
Correct : B. 19 × 9 × 9 cm
13. Plywood is obtained by gluing wooden sheets at
A. 100 to 150 N/cm2
B. 100 to 130°C
C. Both (A) and (B)
D. Neither (A) nor (B)
Correct : C. Both (A) and (B)
14. The low voltage porcelain is mainly used for
A. Switch block
B. Insulating tubes
C. Lamp sockets
D. All of these
Correct : D. All of these
15. The initial setting time of hydraulic lime, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes
Correct : D. 120 minutes
16. PVC stands for
A. Plastic very compact
B. Polythene vinyl chloride
C. Polythene vinyl carbon
D. Polythene vanadium carbide
Correct : B. Polythene vinyl chloride
17. Cement paints usually
A. Contain hydrated lime
B. Contain 5% to 10% colour pigments
C. Contain 5% sodium chloride
D. All the above
Correct : D. All the above
18. The kiln which may work throughout the year, is
A. Clamp
B. Bull's kiln
C. Hoffman's kiln
D. None of these
Correct : C. Hoffman's kiln
19. The main ingredient of a good quality brick earth, is
A. Magnesia
B. Lime
C. Silica
D. Alumina
Correct : D. Alumina
20. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
A. Right angles
B. 45°
C. 60°
D. Parallel
Correct : A. Right angles
21. The most durable varnish is
A. Water varnish
B. Spirit varnish
C. Turpentine varnish
D. Oil varnish
Correct : D. Oil varnish
22. Softer variety of steel may be obtained by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Correct : C. Bessemer process
23. Bitumen emulsion is
A. A liquid containing bitumen in suspension
B. A paint
C. Used as anti-corrosive paint
D. All the above
Correct : D. All the above
24. Plastic bitumen is generally used for
A. Road pavements
B. Expansion joints
C. Crack fillings
D. None to these
Correct : C. Crack fillings
25. Asbestos is
A. Corrugated sheet used for roofing
B. An incombustible fire proof material
C. An organic substance
D. All the above
Correct : D. All the above
26. The rocks which are formed due to pouring of magma at the earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Igneous rocks
Correct : C. Volcanic rocks
27. Invar contains
A. 12% of nickel
B. 24% of nickel
C. 30% to nickel
D. 36% of nickel
Correct : D. 36% of nickel
28. Distemper is
A. A paint consisting of powdered chalk, pigments and water
B. A water proofing agent
C. A paint consisting of coloured cement and water
D. A drying agent
Correct : A. A paint consisting of powdered chalk, pigments and water
29. The compound of Portland cement which reacts immediately with water and also sets first is
A. Tri-calcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
Correct : C. Tri-calcium aluminate
30. In arches, stratified stones are placed so that their planes are
A. Parallel
B. Perpendicular
C. Radial
D. None of these
Correct : C. Radial
31. The fire clay contains pure
A. Lime
B. Oxide of iron
C. Hydrated aluminium silicate
D. Magnesium
Correct : C. Hydrated aluminium silicate
32. Pick up the correct characteristic of Pyroxene from the following:
A. It forms octagonal crystals
B. It converts to chlorine by hydration
C. Its density is 2.3 to 3.6 g/cm2
D. All the above
Correct : D. All the above
33. The base material for distemper, is
A. Chalk
B. Lime
C. Lime putty
D. Cement wash
Correct : A. Chalk
34. Slacking of lime is affected by
A. Keeping it exposed to air
B. Immersing the lime in water
C. Crushing the lime lumps
D. None of these
Correct : B. Immersing the lime in water
35. Stones used for the construction of retaining walls must be
A. Soft
B. Hard
C. Light
D. Heavy
Correct : D. Heavy
36. Permanent magnets are made of high carbon steel and
A. 15% of cobalt
B. 20% of cobalt
C. 35% of cobalt
D. 45% of cobalt
Correct : D. 45% of cobalt
37. Stainless steel resists corrosion due to
A. Carbon
B. Sulphur
C. Vanadium
D. Chromium
Correct : D. Chromium
38. The most important constituent of varnish, is
A. Drier
B. Solvent
C. Resin
D. All the above
Correct : D. All the above
39. A ferrous metal is
A. Cast iron
B. Wrought iron
C. Steel
D. All the above
Correct : D. All the above
40. For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
A. 80 : 13 : 7
B. 70 : 20 : 10
C. 60 : 35 : 5
D. None of these
Correct : A. 80 : 13 : 7
41. Water paint is a
A. White wash
B. Colour wash
C. Whiting
D. All the above
Correct : D. All the above
42. Spirit varnish generally consists of
A. Oil, wax and resin
B. Alcohol, wax and turpentine
C. Pigment and synthetic resin
D. Spirit and shellac
Correct : D. Spirit and shellac
43. Duco paints are
A. Plastic paints
B. Cellulose paints
C. Emulsion paints
D. Oil paints
Correct : D. Oil paints
44. Pick up the correct statement from the following:
A. Melamine is obtained from calcium carbide
B. Formaldehyde is prepared synthetically from methane
C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
D. All the above
Correct : D. All the above
45. Steel contains carbon approximately
A. 1.50% to 5.6%
B. 0.05% to 1.75%
C. 0.25 %
D. None to these
Correct : B. 0.05% to 1.75%
46. Based on its dry weight, a freshly felled tree may contain water
A. 25 %
B. 50 %
C. 75 %
D. 100 %
Correct : D. 100 %
47. Forge pig may be converted to wrought iron by
A. Rolling
B. Pudding
C. Shingling
D. Refining
Correct : B. Pudding
48. Pick up the correct statement from the following:
A. Bull's trench kiln a trench excavated in ground
B. Hoffman's kiln is constructed over ground
C. Tunnel Kiln is constructed as a tunnel
D. All the above
Correct : D. All the above
49. The softest rock is
A. Marble
B. Diamond
C. Talc
D. Quartz
Correct : C. Talc
50. Mild steel is used for
A. Structural works in beams, joints and girders
B. Small sized water pipes
C. Columns and struts
D. None of these
Correct : A. Structural works in beams, joints and girders
51. The most valuable timber may be obtained from
A. Chir
B. Shishum
C. Sal
D. Teak
Correct : D. Teak
52. Mastic asphalt is
A. Acid resisting material
B. Non-corrosive material
C. Corrosive material
D. Heating-resisting material
Correct : B. Non-corrosive material
53. For lime concrete,
A. Slump is 50 to 75 mm
B. Flexural strength at 90 days is 0.2 N/mm2
C. Compressive strength at 90 days is 1.5 N/mm2
D. All the above
Correct : D. All the above
54. The material generally not used as extender in paints, is
A. Powdered silica
B. Gypsum
C. Talc
D. Zinc white
Correct : D. Zinc white
55. Pick up the non-inflammable plastic from the following:
A. Cellulose acetate plastics
B. Polyvinyl chloride plastics
C. Phenol formaldehyde plastic
D. Urea formaldehyde plastic
Correct : B. Polyvinyl chloride plastics
56. For light and ornamental casting, the most unsuitable pig iron, is
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Correct : D. Mottled pig
57. If the ore impurities is
A. Clay, lime stone is used as flux
B. Lime stone, clay is used as flux
C. Quartz, lime stone and argillaceous iron ores are used as flux
D. All the above
Correct : D. All the above
58. The plastics prepared from Vinyl resin are
A. Odourless
B. Non-toxic
C. Transparent
D. All of these
Correct : D. All of these
59. A rock contains only one mineral. It is called
A. Homogeneous
B. Non-homogeneous
C. Monomineralic
D. Polymineralic
Correct : C. Monomineralic
60. Pegmatite is a/an
A. Intrusive igneous rock
B. Extrusive igneous rock
C. Sedimentary rock
D. Metamorphic rock
Correct : A. Intrusive igneous rock
61. Dorry's testing machine is used for
A. Crushing test of stone
B. Hardness test of stone
C. Impact test of stone
D. Water absorption test
Correct : B. Hardness test of stone
62. Dolomite is a lime stone which contains carbonate of magnesia upto
A. 15 %
B. 20 %
C. 25 %
D. 45 %
Correct : D. 45 %
63. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
A. Closer
B. Queen closer
C. King closer
D. Prince closer
Correct : B. Queen closer
64. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
A. 20
B. 15
C. 5
D. 0
Correct : D. 0
65. For a 50 kg cement bag water required, is
A. 16.5 litres
B. 18.5 litres
C. 20.5 litres
D. 22.5 litres
Correct : D. 22.5 litres
66. Slump test for concrete is carried out, to determine
A. Strength
B. Durability
C. Workability
D. Water content
Correct : C. Workability
67. The frog of a brick is normally made on its
A. Top face
B. Bottom face
C. Longer face
D. Shorter side
Correct : A. Top face
68. Granite mainly composed of quartz and feldspar particles, is obtained from
A. Sedimentary rocks
B. Metamorphic rocks
C. Igneous rocks
D. All the above
Correct : C. Igneous rocks
69. Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Correct : B. Grey or foundry pig
70. Pick up the metal refractory from the following:
A. Molybdenum
B. Tungsten
C. Zirconium
D. All of these
Correct : D. All of these
71. With storage, strength of cement
A. Increases
B. Decreases
C. Remains the same
D. None to these
Correct : B. Decreases
72. The commonly used raw material in the manufacture of cement, is
A. Slate
B. Sand stone
C. Lime stone
D. Basalt
Correct : C. Lime stone
73. The rocks formed from molten magma, are called
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. None of these
Correct : B. Igneous rocks
74. Bitumen paints offer
A. Pleasing surface
B. Hard surface
C. Smooth surface
D. Protective surface
Correct : D. Protective surface
75. Ground glass
A. Is made by grinding its one side
B. Is made by melting powdered glass paints surface
C. Is used for getting light without transparency
D. All the above
Correct : D. All the above
76. The wedging is adopted for quarrying costly stratified rock such as
A. Laterite
B. Marble
C. Limestone
D. All the above
Correct : D. All the above
77. The colour of statuary marble used for sculptor's work, is
A. Red
B. Blue
C. White
D. Green
Correct : C. White
78. In a mortar, the binding material is
A. cement
B. sand
C. surkhi
D. Cinder.
Correct : A. cement
79. Wrought iron contains carbon up to
A. 0.25%
B. 1.0%
C. 1.5%
D. 2%.
Correct : A. 0.25%
80. Ultimate strength to cement is provided by
A. Tricalcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite.
Correct : B. Di-calcium silicate
81. The initial setting time of lime-pozzolana, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes.
Correct : D. 120 minutes.
82. The clay to be used for manufacturing for bricks is dugout and allowed to weather in
A. the monsoon
B. the winter
C. the summer
D. none of these
Correct : A. the monsoon
83. Quartzite is a
A. metamorphic rock
B. argillaceous rock
C. calcareous rock
D. Silicious rock.
Correct : D. Silicious rock.
84. Pick up the hypabyssal rock from the following
A. Granite
B. Dolerite
C. Basalt
D. All the above.
Correct : B. Dolerite
85. Depending on the chemical composition and mechanical properties, iron classified as
A. cast iron
B. wrought iron
C. steel
D. all the above.
Correct : D. all the above.
86. The main constituent of fly-ash, is
A. aluminum oxide
B. silica
C. ferrous oxide
D. All of these.
Correct : D. All of these.
87. Bitumen in
A. solid state, is called asphalt
B. semi fluid state, is called mineral tar
C. fluid state, is called petroleum
D. All the above.
Correct : D. All the above.
88. The plastics made from cellulose resin
A. are as clear as glass
B. are tough and strong
C. possess excellent electrical properties
D. All the above.
Correct : D. All the above.
89. The rocks in which argil (or clay) predominates, are called
A. sillicious rocks
B. argillaceous rocks
C. calcareous rocks
D. Igneous rocks.
Correct : A. sillicious rocks
90. A badly mixed cement concrete results in
A. segregation
B. bleeding
C. honey combing
D. None to these.
Correct : C. honey combing
91. Chemically, marble is known as
A. metamorphic rock
B. argillaceous rock
C. calcareous rock
D. silicious rock.
Correct : C. calcareous rock
92. Inner part of a timber log surrounding the pith, is called
A. sapwood
B. cambium layer
C. heart wood
D. none to these.
Correct : C. heart wood
93. Refractory bricks are used for
A. retaining walls
B. columns
C. piers
D. Combustion chambers.
Correct : D. Combustion chambers.
94. Expanded metal is
A. manufactured from steel sheets
B. used for reinforced concrete in road pavements
C. measured in term of SWM (shortway mesh) and LWM (long way mesh)
D. All the above.
Correct : D. All the above.
95. A piece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a
A. cant
B. deal
C. baulk
D. strip.
Correct : C. baulk
96. Quick lime (or caustic lime)
A. is obtained by the calcination of pure lime stone
B. has great affinity to moisture
C. is amorphous
D. All the above.
Correct : D. All the above.
97. Pick up the correct statement from the following
A. soft stones are required for carving
B. light stones are required for arches
C. hard stones are required to stand high pressure
D. All the above.
Correct : D. All the above.
98. Name the type of cement from the following for canal linings
A. sulphate resisting cement
B. rapid hardening cement
C. quick setting cement
D. Pozzuolana cement.
Correct : A. sulphate resisting cement
99. Mastic asphalt is generally used for
A. damp proof course
B. water proof layer
C. partition walls
D. both (a) and (b).
Correct : D. both (a) and (b).
100. The most fire resistant paints are
A. enamel paints
B. aluminum paints
C. asbestos paints
D. Cement paints.
Correct : C. asbestos paints