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Hassan
1. Marble contains mostly lime and silica.
A. True
B. False
C. Both (a) and (b)
D. True
2. The silicious sandstone which has been subjected to metamorphic action, is called
A. moorum
B. laterite
C. quartzite
D. moorum
3.For railway ballast, the stone should be
A. soft with a uniform texture
B. hard, heavy, strong and durable
C. hard, tough, resistant to abrasion and durable
D. soft with a uniform texture
4.The quarrying of stone by the method of wedging is successfully carried out in
A. sandstones
B. limestones
C. marbles
D. sandstones
5. When quarrying is to be done in hard stone and compact rocks, the usual method of quarrying is
A. by wedging
B. by channelling machine
C. by blasting
D. by wedging
6.The compressive strength of felspar is
A. equal to
B. less than
C. more than
D. equal to
7.Gun cotton is made by saturating cotton with nitric acid.
A. Agree
B. Disagree
C. Both (a) and (b)
D. Agree
8.The dressing of stone is done
A. immediately after quarrying
B. after seasoning
C. after three months of quarrying
D. immediately after quarrying
9.The crushing strength of a stone depends upon its
A. texture
B. specific gravity
C. workability
D. texture
10. For the construction of retaining walls, a
A. soft
B. hard
C. heavy
D. soft
11. The attrition test on stones is performed
A. to determine the crushing strength of the stone
B. for assessing the resistance of stone to the sun, rain, wind etc.
C. for ascertain the stability of the stone when exposed to acid fumes
D. to determine the crushing strength of the stone
12.The stone used for the construction of curved or ornamental work should be soft.
A. Right
B. Wrong
C. Both (a) and (b)
D. Right
13.A first class brick should not absorb water more than
A. 10%
B. 15%
C. 20%
D. 10%
14.The brick earth is derived by the disintegration of
A. igneous
B. metamorphic
C. Both (a) and (b)
D. igneous
15.The principal constituent of every kind of brick earth is alumina.
A. True
B. False
C. Both (a) and (b)
D. True
16.The percentage of alumina in a good brick clay should vary from
A. 20 to 30%
B. 30 to 40%
C. 40 to 50%
D. 20 to 30%
17. The percentage of silica in a good brick clay should vary from
A. 20 to 30%
B. 30 to 40%
C. 40 to 50%
D. 20 to 30%
18. Excess pf alumina in the clay
A. makes the brick brittle and weak
B. makes the brick crack and warp on drying
C. changes colour of the brick from red to yellow
D. makes the brick brittle and weak
19.Excess of silica in the clay
A. makes the brick brittle and weak
B. makes the brick crack and wrap on drying
C. changes the colour of the brick from red to yellow
D. makes the brick brittle and weak
20. Which of the following constituent, when present in excess quantity in clay causes the bricks to melt and distort during burning?
A. Alumina
B. Silica
C. Lime
D. Alumina
21. The alkaline salt present in the bricks, absorbs moisture from the air which on drying
A. leaves pores and makes the bricks porous
B. leaves high powder deposit on the brick
C. makes the bricks brittle and weak
D. leaves pores and makes the bricks porous
22.The size of mould for bricks should be
A. equal to
B. smaller than
C. Larger than
D. equal to
23. Efflorescence is caused if
A. the alkaline salt is present in the bricks
B. the clay used for making bricks contain pyrite
C. the water used for pugging the clay contains gypsum
D. the alkaline salt is present in the bricks
24. For shear strength, triaxial shear test is suitable because
A. It can be performed under all three drainage conditions
B. Precise measurement of the pore pressure and volume change during the test is possible
C. Stress distribution on the failure plane, is uniform
D. It can be performed under all three drainage conditions
25. The zero atmospheric pressure is at
A. Sea level
B. Water table
C. Phreatic surface
D. Sea level
26. Terzaghi's bearing capacity factors Nc, Nq and Nr are functions of
A. Cohesion only
B. Angle of internal friction only
C. Both cohesion and angle of internal friction
D. Cohesion only
27.Both cohesion and angle of internal friction
A. Water
B. Glacier
C. Wind
D. Water
28.Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by
A. 25 %
B. 50 %
C. 75 %
D. 25 %
29.A decrease in water content results in a reduction of the volume of a soil in
A. Liquid state
B. Plastic state
C. Semi solid state
D. Liquid state
30. Through a point in a loaded soil, the principal stress is maximum on
A. Minor principal plane
B. Intermediate principal plane
C. Major principal plane
D. Minor principal plane
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