1.Stone generally preferred for railway ballast is
a) Sandstone
b) Dolomite
c) Marble
d) Basalt or trap granite
Answer - d) Basalt or trap granite
2. An artificial stone made from pieces of white marble, white cement and other coloring agents, generally used for floor and facing walls is known as
a) Topaz
b) Marble
c) Terrazzo
d) Gneiss
3. Which one of the following impurity is not desirable in the soil used for brick formation
a) Alkali
b) Kankar
c) Iron oxide
d) Alkali & Kankar
Answer - d) Alkali & Kankar
4. The Rocks formed from molten lava are called
a) Sedimentary rocks
b) Igneous rocks
c) Metamorphic rock
d) Plutonic rock
Answer - b) Igneous rocks
5. Granite is obtained from
a) Igneous rocks
b) Sedimentary rocks
c) Metamorphic rocks
d) Plutonic rock
Answer - a) Igneous rocks
6. Marble is obtained from
a) Igneous rocks
b) Sedimentary rocks
c) Metamorphic rocks
d) Plutonic rock
Answer - c) Metamorphic rocks
7. Limestone is obtained from
a) Igneous rocks
b) Sedimentary rocks
c) Metamorphic rocks
d) Plutonic rock
Answer - b) Sedimentary rocks
8. The bulking of sand with 2% moisture content is about
a) 5%
b) 10%
c) 15%*
d) 20%
Answer - c) 15%
9. A good building stone should not absorb water more than
a) 5%
b) 10%
c) 15%
d) 20%
Answer - a) 5%
10. The standard size of modular bricks is------------- centimeters
a) 18x 8 x8
b) 19x 9x 9
c) 20x 10 x10
d) 21x 11 x11
Answer - d) 21x 11 x11
11. The Frog of a brick is normally made on its
a) Top face
b) Bottom face
c) Longer face
d) Shorter side
Answer - a) Top face
12. The minimum compressive strength of first class brick should be
a) 75 kg per centimeter square
b) 90 kg per centimeter square
c) 100 kg per centimeter square
d) 120 kg per centimeter square
Answer -c) 100 kg per centimeter square
13. If first class Brick is immersed in water for 24 hours it should not absorb water by weight more than
a) 10%
b) 15%
c) 20%
d) 25%
Answer - c) 20%
14. A pug mill is used for
a) Softening brick earth
b) Moulding brick earth
c) Tempering brick earth
d) Compacting brick earth
Answer - c) Tempering brick earth
15. Minimum crushing strength of the bricks is
a) 35 kg/cm2
b) 55 kg/m2
c) 70 kg/m2
d) 105 kg/m2
Answer - b) 55 kg/m2
16. Normal size of brick used in India is
a) 22 x 11.2 x 7 cm
b) 25 x 16 x 8 cm
c) 19 x 12 x 9 cm
d) 20 x 10 x 5 cm
Answer - a) 22 x 11.2 x 7 cm
17. The depth of frog in a brick is
a) 15 mm
b) 10 mm
c) 6. 25 mm
d) 3 mm
Answer - c) 6. 25 mm
18. The base material for distemper is
a) Chalk
b) Lime
c) Lime putty
d) Cement wash
Answer - a) Chalk
19. Timber having maximum resistance against white ants is obtained from
a) Chir
b) Sheesham
c) Sal
d) Teak
Answer - d) Teak
20. Linseed oil is used in Paints as a
a) Vehicle
b) Base
c) Drier*
d) Thinner
Answer - c) Drier
21. The lime which contains mainly calcium oxide and slacks with water, is known as
a) Fat lime
b) Quicklime
c) Hydraulic lime
d) Poor line
Answer - b) Quicklime
22. The property by virtue of which lime sets under water is known as
a) Slacking
b) Setting
c) Hydraulicity
d) Calcining
Answer - d) Calcining
23. Which of the following lime can set under water also
a) Fat Lime
b) Lean lime
c) Hydraulic line
d) Quick lime
Answer - b) Lean lime
24. Granite is not suitable for ordinary building purpose because
a) It cannot be polished
b) It is not fireproof
c) It is costly
d) It has less crushing strength
Answer - c) It is costly
25. Which of the following stone is best suited for construction of piers and abutments of Railway Bridge
a) Granite
b) Sandstone
c) Limestone
d) Quartzite
Answer - a) Granite
26. Which of the following trees yields hardwood
a) Deodar
b) Sheesham
c) Chir
d) Pine
Answer - b) Sheesham
27. In which of the following directions, the strength of timber is maximum
a) Parallel to grains
b) 45 degree to grains
c) Perpendicular to grains
d) same in all directions
Answer - a) Parallel to grains
28. Which of the following ingredients of Brick earth enables the brick to retain its shape
a) Alumina
b) Silica
c) Iron
d) Magnesia
Answer - b) Silica
29. Number of bricks required for 1 cubic meter of brick masonry is
a)400
b) 450
c) 500
d) 550
Answer - c) 500
30. Quicklime is
a) Calcium carbonate
b) Calcium bicarbonate
c) Calcium oxide
d) Calcium hydroxide
Answer - c) Calcium oxide
31. The main ingredients of Portland cement are
a) Lime and silica
b) Lime and Alumina
c) Alumina magnesia
d) Silica and Alumina
Answer - a) Lime and silica
32. After storage, strength of cement
a) Decreases
b) Increases
c) Remains same
d) Depends upon the type of cement
Answer - a) Decreases
33. The Most common admixture used to accelerate the initial setting of concrete is
a) Gypsum
b) Calcium chloride
c) Calcium carbonate
d) Calcium bicarbonate
Answer - b) Calcium chloride
34. Which type of following cement is used for mass concrete work
a) High Alumina cement
b) Quick setting cement
c) Rapid hardening cement
d) Low heat cement
Answer - d) Low heat cement
35. Le Chatelier apparatus is used to determine which of the following properties for cement
A) Soundness
b) Initial setting time
c) Compressive strength
d) Tensile strength
Answer - A) Soundness
36. Which of the following constituents impart plasticity to brick earth
a) Alumina
b) Silica
c) Lime
d) Magnesia
Answer - a) Alumina
37. Hydraulic lime is not used in plastering because it may result in
a) Blistering
b) Efflorescence
c) Flaking
d) Fluorescence
Answer - a) Blistering
38. Seasoning of timber essentially involve
a) Strengthening of cells in Timber
b) Replacing the moisture content to a level below its fibre saturation point
c) Facilitating equal shrinkage in all directions so as to prevent warping
d) Preventing cracking due to defects and shakes
Answer - c) Facilitating equal shrinkage in all directions so as to prevent warping
39. The commonly used lime in white washing is
a) Hydraulic lime
b) Slaked lime
c) Plain lime
d) White lime
Answer - d) White lime
40. Distemper is used to coat
a) External concrete services
b) Internal surfaces not exposed to weather
c) Woodwork
d) Compound walls
Answer - b) Internal surfaces not exposed to weather
41. Putty is made up of
a) White lead and turpentine
b) Powdered chalk and raw linseed oil
c) Red lead and linseed oil
d) Zinc oxide and boiled linseed oil
Answer - b) Powdered chalk and raw linseed oil
42. The approximate ratio between the strength of cement concrete at seven days and 28 days is
a) 3/ 4
b) 2/3
c) 1/2
d) 1/3
Answer - b) 2/3
43. Soundness test of cement is done to determine its
a) Durability in seawater
b) Free lime content
c) Iron oxide content
d) Alumina content
Answer - b) Free lime content
44. The volume of a bag of cement in cubic meters is about
a) 0.035
b) 0.35
c) 0.53
d) .053
Answer - a) 0.035
45. Terracotta is used in buildings for
a) Storage
b) Insulation
c) Ornamental work
d) Sewer pipe
Answer - c) Ornamental work
46. Sand is mixed with lime to
a) Reduced cost
b) Reduced setting time
c) Prevent shrinkage and cracking
d) Improve visual appearance
Answer - c) Prevent shrinkage and cracking
47. The setting and hardening of cement after addition of water is due to
a) Binding action of water
b) Evaporation of water
c) Hydration and hydrolysis of some constituent compounds of cement*
d) Additional hardening compounds added to cement
Answer - c) Hydration and hydrolysis of some constituent compounds of cement
48. The constituent of cement which act as Binders are
a) Sand and silica
b) Silica and carbon
c) tricalcium silicate dicalcium silicate and carbon
d) tricalcium aluminate,dicalcium silicate and tricalcium silicate
Answer - d) tricalcium aluminate,dicalcium silicate and tricalcium silicate
50. A slow setting cement will have higher percentage of
a) tricalcium aluminate
b) tricalcium silicate
c) Gypsum
d) Dicalcium silicate
Answer - d) Dicalcium silicate
51. Dicalcium silicate
a) Hydrates rapidly
b) Generate less heat of hydration
c) Hardens rapidly
d) Reacts with water only
Answer - b) Generate less heat of hydration
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