Basic of Civil Engineering MCQs with answer (Part:-2)
51 What is the harmful effect of presents of alkali in brick earth on bricks?
(A) Discolourises bricks
(C) Porous bricks
52 Why do bricks become brittle when excess silica is present?
(A) Pores are created
(B) Flaking occurs
(C) Thermal stability is lost
(D) Cohesion is lost
53 Which of the following leads to the formation of small pores in brick?
(A) Iron pyrites
(C) Organic matter
54 The presence of which of the below renders clay totally unsuitable for brick manufacture?
55 Unburnt bricks are also called:
(A) Dry bricks
(B) Clayey bricks
(C) Kucha bricks
(D) Clamp bricks
56 Burnt bricks can be further classified into how many types?
57 First class bricks are used for:
(A) Brick ballast in R.C.C
(B) Boundary walls
(C) Low height walls
58 The minimum crushing strength of third class brick is:
(A) 3.5 N/mm2
(B) 7 N/mm2
(C) 10 N/mm2
(D) 20 N/mm2
59 Which of the following is not a feature of second class bricks?
(A) Have small irregularities
(B) Water absorption is between 20-25%
(C) Rectangular in shape
(D) Free from cracks
60 Trees are generally classified, based on the mode of growth into:
61 What is the life time of a moderately durable timber?
(A) 10-20 years
(B) 1-5 years
(C) 10-15 years
(D) 5-10 years
62 Which of the following is an example of soft wood?
63 Which IS Code gives a classification of commercial timbers and their zonal distribution?
(A) IS 620
(B) IS 399
(C) IS 401
(D) IS 190
64 Hard wood is strong in tension and weak in compression.
65 Exogenous trees are further divided into:
66 Which of the below is a property of soft wood?
(A) Medullary rays are less distinct
(B) Annual rings are less distinct
(C) Dark in colour
(D) Close grained structure
67 Fine Aggregates should pass through which IS sieve?
68 How many types of fine aggregates are there based on source?
69 What is the fineness modulus value of a fine sand?
70 M-Sand has ___________ type of particle shape.
71 The specific gravity for sand is:
72 Graded aggregate contains particles of size:
(A) Single grade
(C) Multi grade
73 Flaky particles have:
(A) Small thickness
(B) Elongated sides
(C) Sharp edges
(D) Rounded edges
74 Which size coarse aggregate is ideal for use in a concrete mix?
75 In crushing test on coarse aggregates, what size particle is taken as a sample?
(A) Passing 12.5mm IS sieve
(B) Retained on 10mm IS sieve
(C) Passing 10mm and retained on 4.75mm IS sieve
(D) Passing 12.5mm and retained on 10mm IS sieve
76 Gravel is a type of:
(A) Rounded aggregate
(B) Angular aggregate
(C) Flaky aggregate
(D) Irregular aggregate
77 A building can be mainly divided into how many components?
78 D.P.C (Damp Proof Course) is mainly laid on:
79 Floor in a building
(A) Separates levels
(B) Is laid below plinth
(C) Contains R.C.C.
(D) Has thickness of 10cm
80 Which of the below is constructed above doors, windows?
81 What is the level below window called?
(A) Pane level
(B) Lintel level
(C) Sill level
(D) Plinth level
82 Wall is mainly of how many types?
83 ___________ wall is used to resist lateral forces like severe wind.
(A) Knee wall
(B) Cavity wall
(C) Infill wall
(D) Shear wall
84 The outer projection on the tread of a stair is:
85 Mortar comes from the Latin word:
86 The first used Mortar was:
(A) Lime mortar
(B) Mud mortar
(C) Cement mortar
(D) Organic mortar
87 Polymer Cement Mortar (PCM) is used primarily for:
(A) Repairing concrete structure
(B) Stone masonry
(C) Tile masonry
(D) Brick masonry
88 The guidelines for preparation for mortar is given in:
(A) IS 4455
(B) IS 2250-1981
(C) IS 3350-1981
(D) IS 5567
89 Which of the below is added to make mortar fire proof?
(B) Asbestos cement
(C) Powdered glass
(D) Aluminous cement
90 The setting speed of mortar can be increased using:
91 Which of the below mortar can settle under water?
92 Which stone is used for buildings situated in industrial towns?
(A) Marble slab
(B) Compact sandstone
93 Rubble masonry is sub-divided into:
94 Which of the below joints is used for masonry in arches?
95 Which ratio of cement mortar is used for stone masonry?
96 Ashlar masonry uses:
(A) Dimension stones
(B) Polygonal stones
(C) Quarry dressed stones
(D) Square stones
97 __________ masonry occupies an intermediate position between rubble masonry and ashlar masonry.
(A) Rubble block in a course
(B) Ashlar rubble in course
(C) Ashlar block in a course
(D) Rubble ashlar in course
98 Great skill and skilled labour are required for laying:
(A) Coursed rubble masonry
(B) Ashlar fine masonry
(C) Ashlar chamfered masonry
(D) Dry rubble masonry
99 How many types of brick masonry are possible?