Civil Engineering - Building Materials MCQs Part 1
1. In a mortar, the binding material is
A.
cement
cement
B.
sand
sand
C.
surkhi
surkhi
D.
cinder.
cinder.
Answer Option A
2. Lacquer paints
A.
are generally applied on structural steel
are generally applied on structural steel
B.
are less durable as compared to enamel paints
are less durable as compared to enamel paints
C.
consist of resin and nitro-cellulose
consist of resin and nitro-cellulose
D.
contain alcohol as thinner
contain alcohol as thinner
E.
all the above.
all the above.
Answer Option E
3. Wrought iron contains carbon upto
A.
0.25%
0.25%
B.
1.0%
1.0%
C.
1.5%
1.5%
D.
2%.
2%.
Answer Option A
4. Pick up the polymineralic rock from the following:
A.
Quartz sand
Quartz sand
B.
Pure gypsum
Pure gypsum
C.
Magnesite
Magnesite
D.
Granite
Granite
E.
None of these.
None of these.
Answer Option D
5. Pick up the correct statement from the following:
A.
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
B.
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
C.
For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55
D.
For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65
For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65
E.
All the above.
All the above.
Answer Option E
6. Ultimate strength to cement is provided by
A. Tricalcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite.
Answer Option B
7. Elastomers can extend upto
A. five times their original dimensions
B. seven times their original dimensions
C. ten times their original dimensions
D. three times their original dimensions.
Answer Option C
8. Bitumen felt
A. is used as water proofing material
B. is used as damp proofing material
C. is made from bitumen and hessian fibres
D. all the above.
Answer Option D
9. In the method of condensation polymerization,
A. low-molecular substances are removed from the high molecular substance
B. the reaction proceeds with an evolution of ammonia
C. the reaction proceeds with an evolution of hydrogen chloride
D. all the above.
Answer Option D
10. In the cement the compound quickest to react with water, is
A. Tricalcium aluminate
B. Tetra-calcium alumino-ferrite
C. Tricalcium silicate
D. Dicalcium silicate.
Answer Option A
11. The initial setting time of lime-pozzolana, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes.
Answer Option D
12. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
A. the monsoon
B. the winter
C. the summer
D. none of these.
Answer Option A
13. The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Igneous rocks.
Answer Option A
14. Quartzite is a
A. metamorphic rock
B. argillaceous rock
C. calcareous rock
D. silicious rock.
Answer Option D
15. The variety of pig iron used for manufacture of wrought iron, is
A. Bessemer pig
B. Grey or foundry pig
C. White forge pig
D. Mottled pig.
Answer Option C
16. Sand stone is
A. sedimentary rock
B. metamorphic rock
C. igneous rock
D. volcanic rock.
Answer Option A
17. If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig.
Answer Option C
18. Stainless steel contains
A. 18% of chromuim and 8% nickel
B. 8% of chromium and 18% of nickel
C. 12% of chromium and 36% of nickel
D. 36% of chromium and 12% of nickel.
Answer Option A
19. Pick up the hypabyssal rock from the following:
A. Granite
B. Dolerite
C. Basalt
D. All the above.
Answer Option B
20. Depending on the chemical composition and mechanical properties, iron may be classified as
A. cast iron
B. wrought iron
C. steel
D. all the above.
Answer Option D
21. Wrought iron contains carbon about
A. 1.5% to 5.5%
B. 0.5% to 1.75%
C. 0.1% to 0.25%
D. none to these.
Answer Option C
22. The main constituent of fly-ash, is
A. aluminium oxide
B. silica
C. ferrous oxide
D. All of these.
Answer Option D
23. 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.
Answer Option D
24. 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.
Answer Option D
25. Kaolin is chemically classified as
A. metamorphic rock
B. argillaceous rock
C. calcareous rock
D. silicious rock.
Answer Option B
26. Which one of the following is acid resistant asbestos:
A. actinolite asbestos
B. amosite asbestos
C. anthophylite asbestos
D. crocidolite asbestos
E. All the above.
Answer Option E
27. Due to attack of dry rot, the timber
A. cracks
B. shrinks
C. reduces to powder
D. none of these.
Answer Option C
28. Brittleness of cold is due to an excess of
A. sulphur
B. carbon
C. phosphorus
D. silicon.
Answer Option C
29. For the manufacture of Portland cement, the proportions of raw materials used, are
A. lime 63% ; silica 22% ; other ingredients 15%
B. lime 22% ; silica 63% ; other ingredients 15%
C. silica 40% ; lime 40% ; other ingredients 20%
D. silica 70% ; lime 20% ; other ingredients 10%.
Answer Option A
30. Asbestos cement
A. is brittle
B. warps due to changes in humidity
C. strength is lowered when saturated by water
D. all the above.
Answer Option D
31. Gniess is obtained from
A. igneous rocks
B. metamorphic rocks
C. sedimentary rocks
D. sedimentary metamorphic rocks.
Answer Option D
32. The rocks formed by gradual deposition, are called
A. sedimentary rocks
B. igneous rocks
C. metamorphic rocks
D. none of these.
Answer Option A
33. Galvanising means covering iron with a thin coat of
A. tin
B. zinc
C. glaze
D. coal tar.
Answer Option B
34. For preparing porcelains, the clay should be
A. sufficiently pure
B. of high degree of tanacity
C. of good plasticity
D. All the above.
Answer Option D
35. Polymerization helps to improve the property of
A. strength
B. rigidity
C. elasticity
D. all of these.
Answer Option D
36. Good quality stones must
A. be durable
B. be free from clay
C. resist action of acids
D. all the above.
Answer Option D
37. Sewer pipes are made of
A. earthen ware
B. stone ware
C. refractory clay
D. terracota
E. all the above.
Answer Option B
38. Fibre glass
A. retains heat-longer
B. has a higher strength to weight ratio
C. is shock proof and fire retardent
D. does not decay
E. all the above.
Answer Option E
39. Pick up the correct statement from the following:
A. The theory of formation of concrete is based on the phenomena of formation of voids
B. The bulking of sand is taken into account while volumetric proportioning of the aggregates
C. The dry sand and the sand completely flooded with water, have practically the same volume
D. The expansion and contraction joints are provided if concrete structures exceed 12 m in length
E. All the above.
Answer Option E
40. Pick up the correct statement from the following:
A. In stone arches, the stones are placed with their natural beds radial
B. In cornices, the stones are placed with their natural beds as vertical
C. In stone walls, the stones are placed with their natural beds as horizontal
D. All the above.
Answer Option D
41. The commonly used colour pigment in paints, is
A. ambers
B. carbon black
C. iron oxide
D. lamp black
E. all the above.
Answer Option E
42. Varnish is a transparent or semi-transparent solution of resinuous substances in
A. alcohol
B. linseed
C. turpentine
D. all the above.
Answer Option D
43. Initial setting time of cement for asbestos cement products should be not less than
A. 30 minutes
B. 50 minutes
C. 75 minutes
D. 90 minutes.
Answer Option D
44. The variety of pig iron used for the manufacture of steel by Bessemer process, is
A. Bessemer pig
B. Grey pig
C. White forge pig
D. Mottled pig.
Answer Option A
45. For melting one tonne of cast iron
A. 700 m3 air is required
B. 20 kg limestone is required
C. one quintal coke is required
D. all the above.
Answer Option D
46. For filling cracks in masonry structures, the type of bitumen used, is
A. cut-back bitumen
B. bitumen-emulsion
C. blown bitumen
D. plastic bitumen.
Answer Option D
47. Plastic
A. is an organic substance
B. consists of natural or synthetic binders
C. finished products are rigid and stable at normal temperature
D. is capable of flow when necessary heat and pressure are applied
E. All the above.
Answer Option E
48. Vanadium steel is generally used for
A. railway switches and crossing
B. bearing balls
C. magnets
D. axles and springs.
Answer Option D
49. Pick up the correct statement from the following:
A. In basic Bessemer process, the steel heats the converter
B. In open-hearth process, the furnace heats the steel
C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
D. all the above.
Answer Option D
50. The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process.
Answer Option B
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