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MCQ Questions for CBSE Class 12 with Answers
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MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
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Quiz
Quiz
/
Building Materials and Construction MCQ Interview Questions and Answers
1.
Gypsum is a
mechanically formed sedimentary rock
igneous rock
chemically precipitated sedimentary rock
metamorphic rock
2.
Which of the following sedimentary rocks changes into quartzite by metamorphic action ?
sand stone
lime stone
shale
gypsum
3.
Which of the following represents a metamorphic rock? i) slate ii) shale iii) quartzite The correct answer is
only (iii)
both (i) and (iii)
both (ii) and (iii)
all (i), (ii) and (iii)
4.
Quartitze is a
silicious rock
argillaceous rock
calcareous rock
aqueous rock
5.
Which of the following is a mineral ?
basalt
granite
quartz
syenite
6.
Slate is formed by metamorphic action on
shale
lime stone
sand stone
granite
7.
Sandstone is a i) sedimentary rock ii) aqueous rock iii) silicious rock The correct answer is
only (i)
both (i) and (ii)
both (i) and (iii)
all (i), (ii) and (iii)
8.
Which of the following is a rock ?
quartz
mica
gypsum
none of the above
9.
Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica
basalt and marble are the only metamorphic rocks
there is no sedimentary rock
granite is the only igneous rock
quartz and mica are minerals
10.
A heavy stone is suitable for
arches
rubble masonry
roads
retaining walls
11.
The stone suitable for rubble masonry should be.
hard
tough
heavy
light
12.
Which of the following metamorphic rocks has the most weather resisting characteristics?
marble
quartzite
slate
lime stone
13.
A good building stone should not absorb water more than
5%
10%
15%
20%
14.
Which of the following has more fire resisting characteristics ?
marble
lime stone
compact sand stone
granite
15.
Jumper is a tool used for
testing of stones
quarrying of stones
dressing of stones
none of the above
16.
The important test to be conducted on a stone used in docks and harbors is-
hardness test
work ability test
weight test
toughness test
17.
The predominant constituent which is responsible for strength in granite is
quartz
feldspar
mica
none of the above
18.
Granite is not suitable for ordinary building purpose because
it can not be polished
it is not a fire proof material
it is costly
it has less crushing strength
19.
Which of the following stone is best suited for construction of piers and abutments of a railway bridge ?
granite
sand stone
lime stone
quartzite
20.
The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as
quarrying of stones
blasting of stones
seasoning of stones
dressing of stones
21.
Crushing strength of a good building stone should be more than
50 MPa
100 MPa
150 MPa
200 MPa
22.
Specific gravity for most of the building stones lies between
1.5 to 2.0
2.0 to 2.5
2.5 to 3.0
3.0 to 3.5
23.
Spalling hammer is used for
driving wooden headed chisels
rough dressing of stones
carving of stones
breaking small projection of stones
24.
Cross cut saw is used for
cutting soft stones
cutting hard stones
cutting large blocks of stones
dressing stones
25.
Sapwood consists of
innermost annular rings around the pith
portion of timber between heartwood and cambium layer
thin layers below the bark
thin fibre which extends from the pith outwards and holds the annular rings together
26.
Which of the following trees yields hard wood ?
deodar
chir
shishum
pine
27.
The radial splits which are wider on the outside of the log and narrower towards the pith are known as
heart shakes
cupshakes
starshakes
rindgalls
28.
In which of the following pairs both trees yield soft wood?
deodar and shishum
chir and sal
sal and teak
chir and deodar
29.
Which of the following timbers is suitable for making sports goods ?
mulberry
mahogany
sal
deodar
30.
Assertion A : Shishum is used for decorative woodwork. Reason R : Shishum can be polished to an excellent finish. Select your answer according to the coding system given below :
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
31.
The disease of dry rot in timber is caused by
lack of ventilation
alternate wet and dry conditions
complete submergence in water
none of the above
32.
Plywood has the advantage of’
greater tensile strength in longer direction
greater tensile strength in shorter direction
same tensile strength in all directions
none of the above
33.
In which of the following directions, the strength of timber is maximum ?
parallel to grains
45° to grains
perpendicular to grains
same in all directions
34.
The moisture content in a well seasoned timber is
4% to 6%
10% to 12%
15% to 20%
100%
35.
The trunk of tree left after cutting all the branches is known as
log
batten
plank
baulk
36.
The age of a tree can be known by examining
cambium layer
annular rings
medullary rays
heart wood
37.
Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is
0°
30°
45°
90°
38.
The plywood
has good strength along the panel only
can be spilt in the plane of the panel
has greater impact resistance to blows than ordinary wood
cannot be bent more easily than ordinary wood of same thickness
39.
The practical limit of moisture content achieved in air drying of timber is
5%
15%
25%
35%
40.
First class timber has an average life of
less than one year
1 to 5 years
5 to 10 years
more than 10 years
41.
A first class brick when immersed in cold water for 24 hours should not absorb water more than
15%
20%
22%
25%
42.
Crushing strength of a first class brick should not be less than
3.5 N/mm2
7.0 N/mm2
10.5 N/mm2
14.0 N/mm2
43.
The main function of alumina in brick earth is
to impart plasticity
to make the brick durable
to prevent shrinkage
to make the brick impermeable
44.
The percentage of alumina in a good brick earth lies between
5 to 10%
20 to 30%
50 to 60%
70 to 80%
45.
Excess of alumina in brick earth makes the brick
impermeable
brittle and weak
to lose cohesion
to crack and warp on drying
46.
The nominal size of the modular brick is
190 mm x 90mmx 80 mm
190 mm x 190 mm x 90 mm
200 mm x 100 mm x 100 mm
200 mm x 200 mm x 100 mm
47.
Percentage of silica in a good brick earth lies between
5 to 10%
20 to 30%
50 to 60%
70 to 80%
48.
Excess of silica in brick earth results in
cracking and warping of bricks
loss of cohesion
enhancing the impermeability of bricks
none of the above
49.
Which of the following ingredients of the brick earth enables the brick to retain its shape ?
alumina
silica
iron
magnesia
50.
Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth ?
lime stone and alumina
silica and alkalies
alumina and iron
alkalies and magnesium
51.
The process of mixing clay, water and other ingredients to make brick is known as
kneading
moulding
pugging
drying
52.
Advantage of a clamp compared to a kiln for burning bricks is that
it takes less time for burning
it gives more output of first class bricks
it has less initial cost
it is suitable when bricks are required in large numbers
53.
The internal size of mould used in brick preparation is
equal to the size of a fully burnt brick
smaller than the size of a fully burnt brick
greater than the size of a fully burnt brick
none of the above
54.
Pug mill is used for
preparation of clay
moulding of clay
drying of bricks
burning of bricks
55.
Which of the following bricks are used for lining of furnaces ?
overburnt bricks
underburnt bricks
refractory bricks
first class bricks
56.
The frog of the brick in a brick masonry is generally kept on
bottom face
top face
shorter side
longer side
57.
Number of bricks required for one cubic metre of brick masonry is
400
450
500
550
58.
Glazing is used to make earthenware
hard
soft
porous
impervious
59.
Quick lime is
calcium carbonate
calcium oxide
calcium hydroxide
none of the above
60.
Quick lime is ) slow in setting i) rapid in slacking ii) good in strength The correct answer is
only (i)
only (ii)
both (i) and (ii)
both (ii) and (iii)
61.
Assertion A : Pure lime takes a long time to develop adequate strength. eason R : Pure lime has slow hardening characteristics. elect your answer according to the coding system given below :
Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not a correct explanation of A.
A is true but R is false.
A is false but R is true.
62.
Hydraulic lime is obtained by
burning of lime stone
burning of kankar
adding water to quick lime
calcination of pure clay
63.
The main constituent which imparts hydraulicity to hydraulic lime is
calcium oxide
silica
clay
water
64.
Study the following statements. i) Hydraulic lime is suitable for white washing, ii) Fat lime is suitable for whitewashing, iii) Hydraulic lime is suitable for making mortar, iv) Fat lime is suitable for making mortar. The correct answer is
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)
65.
The main ingredients of Portland cement are
lime and silica
lime and alumina
silica and alumina
lime and iron
66.
The constituent of cement which is responsible for all the undesirable properties of cement is
dicalcium silicate
tricalcium silicate
tricalcium aluminate
tetra calcium alumino ferrite
67.
Le Chatelier’s device is used for determining the
setting time of cement
soundness of cement
tensile strength of cement
compressive strength of cement
68.
The main constituent of cement which is responsible for initial setting of cement is
dicalcium silicate
tricalcium silicate
tricalcium aluminate
all of the above
69.
The initial setting time for ordinary Portland cement as per IS specifications should not be less than
10 minutes
30 minutes
60 minutes
600 minutes
70.
As per IS specifications, the maximum final setting time for ordinary Portland cement should be
30 minutes
1 hour
6 hours
10 hours
71.
For testing compressive strength of cement, the size of cube used is
50 mm
70.6 mm
100 mm
150 mm
72.
The normal consistency of ordinary Portland cement is about
10%
20%
30%
40%
73.
Early attainment of strength in rapid hardening cement is mainly due to
gypsum
finer grinding
tricalcium silicate
tricalcium aluminate
74.
After storage, the strength of cement
decreases
increases
remains same
may increase or decrease
75.
According to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than
7 MPa
11.5 MPa
16 MPa
21 MPa
76.
Addition of pozzolana to ordinary Portland cement increases
bleeding
shrinkage
permeability
heat of hydration
77.
Gypsum consists of
H2S and C02
CaS04 and H20
Lime and H20
C02 and calcium
78.
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
1:2
1:3
1:4
1:6
79.
The slump recommended for mass concrete is about
25 mm to 50 mm
50 mm to 100 mm
100 mm to 125 mm
125 mm to 150 mm
80.
With increase in moisture content, the bulking of sand
increases
decreases
first increases to a certain maximum value and then decreases
first decreases to a certain minimum value and then increases
81.
Which of the following cements is suitable for use in massive concrete structures such as large dams ?
ordinary Portland cement
low heat cement
rapid hardening cement
sulphate resisting cement
82.
Proper amount of entrained air in concrete results in i) better workability ii) better resistance to freezing and thawing iii) lesser workability iv) less resistance to freezing and thawing The correct answer is
(i) and (ii)
(i)and(iv)
(ii) and (iii)
(iii) and (iv)
83.
The most common admixture which is used to accelerate the initial set of concrete is
gypsum
calcium chloride
calcium carbonate
none of the above
84.
The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
1
2
3
4
85.
The basic purpose of a retarder in concrete is
to increase the initial setting time of cement paste in concrete
to decrease the initial setting time of cement paste in concrete
to render the concrete more water tight
to improve the workability of concrete mix
86.
Which of the following cements contains maximum percentage of dicalcium silicate?
ordinary Portland cement
low heat cement
rapid hardening cement
sulphate resisting cement
87.
The most commonly used retarder in cement is
gypsum
calcium chloride
calcium carbonate
none of the above
88.
Three basic raw materials which are needed in large quantities for production of steel are
iron ore, coal and sulphur
iron ore, carbon and sulphur
iron ore, coal and lime stone
iron ore, carbon and lime stone
89.
Compared to mild steel, cast iron has i) high compressive strength ii) high tensile strength iii) low compressive strength iv) low tensile strength The correct answer is
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i)and(iv)
90.
Which of the following gradients exerts maximum influence on properties of steel?
iron
carbon
manganese
sulphur
91.
Which of the following is the purest form of iron ?
cast iron
wrought iron
mild steel
high carbon steel
92.
The ultimate tensile strength of structural mild steel is about
160N/mm2
260N/mm2
420 N/mm2
520 N/mm2
93.
Percentage of carbon content in mild steel is
less than 0.25
between 0.25 and 0.7
between 0.7 and 1.5
greater than 1.5
94.
Which of the following stresses is used for identifying the quality of structural steel ?
ultimate stress
yield stress
proof stress
none of the above
95.
The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
less than 1
equal to 1
greater than 1
less than 1 in beams but greater than 1 in channels
96.
Paints with white lead base are suitable for painting of
wood work
iron work
both wood work and iron work
none of the above
97.
Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below :
Both A and R are true and, R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
98.
The amount of water used for one kg of distemper is
0.2 liter
0.4 liter
0.6 liter
0.8 liter
99.
The vehicle used in case of enamel paints is usually
linseed oil
water
varnish
none of the above
100.
. Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below :
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
101.
. In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
English bond
double flemish bond
zigzag bond
single flemish bond
102.
. The stretcher bond in brick masonry can be used only when the thickness of wall is
90 mm
180 mm
190 mm
280 mm
103.
. The pressure acting on the stones in stone masonry construction should be
along the direction of bedding planes
at 45° to the direction of bedding planes
at 60° to the direction of bedding planes
perpendicular to the direction of bedding planes
104.
. Which of the following should be used for hearting of thicker walls ?
headers
stretchers
brick bats
queen closer
105.
. A queen closer is a
brick laid with its length parallel to the face or direction of wall
brick laid with its breadth parallel to the face or direction of wall
brick having the same length and depth as the other bricks but half the breadth
brick with half the width at one end and full width at the other
106.
. Minimum thickness of wall where single flemish bond can be used is
half brick thick
one brick thick
one and a half bricks thick
two bricks thick
107.
. The most important tool in brick laying for lifting and spreading mortar and for forming joints is
trowel
square
bolster
scutch
108.
. Expansion Joints in masonry walls are provided in wall lengths usater than
10 m
20 m
30 m
40 m
109.
. The type of bond provided in brick masonry for carrying heavy loads is
single flemish bond
double flemish bond
English bond
zigzag bond
110.
. A mortar joint in masonry which is normal to the face of wall is known as
bed joint
wall joint
cross joint
bonded joint
111.
. The proportions of lime and sand in the mortar normally used in brick construction are
1:2
1:4
1:6
1:8
112.
. Number of vertical joints in a stretcher course is x times the number of joints in the header course, where x is equal to
1/2
1
2
1/4
113.
. As compared to stretcher course, the thickness of joints in header course should be
less
more
equal
equal or more
114.
. As compared to English bond, double flemish bond is
stronger
more compact
costly
none of the above
115.
. Single flemish bond consists of
double flemish bond facing and Eng-lish bond backing in each course
English bond facing and double flemish bond backing in each course
stretcher bond facing and double flemish bond backing in each course
double flemish bond facing and header bond backing in each course
116.
. The differential settlement in case of foundations on sandv soils should not exceed
25 mm
40 mm
65 mm
100 mm
117.
. In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to
increase the depth of foundation
drain the soil
compact the soil
replace the poor soil
118.
. The type of footing which is used to transmit heavy loads through steel columns is
raft foundation
grillage foundation
well foundation
isolated footing
119.
. The maximum total settlement for isolated foundations on clayey soils should be limited to
25 mm
40 mm
65 mm
100 mm
120.
. The type of pile which is driven at an inclination to resist inclined forces is known as
friction pile
sheet pile
batter pile
anchor pile
121.
. The minimum depth of foundation in clayey soils is
0.5 m
0.7 m
0.9 m
1.2 m
122.
. The maximum total settlement for raft foundation on clayey soils should be limited to
25 mm
25 to 40 mm
40 to 65 mm
65 to 100 mm
123.
. The bearing capacity of a water logged soil can be improved by
compacting the soil
draining the soil
increasing the depth of foundation
grouting
124.
. The type of flooring suitable for use in churches, theatres, public libraries and other places where noiseless floor covering is desired is
cork flooring
glass flooring
wooden flooring
linoleum flooring
125.
. The vertical distance between the springing line and highest point of the innercurve of an arch is known as
intrados
rise
spandril
extrados
126.
. Depth or height of the arch is the
perpendicular distance between intra-dos and extrados
vertical distance between springing line and intrados
perpendicular distance between springing line and extrados
none of the above
127.
. The triangular space formed between the extrados and the horizontal line drawn through the crown of an arch is known as
haunch
spandril
voussoirs
skewbacks
128.
. The lintels are preferred to arches because
arches require more headroom to span the openings like doors, windows etc.
arches require strong abutments to withstand arch thrust
arches are difficult in construction
all of the above
129.
. In the construction of arches, sand box method is used for
centring
actual laying of arch work
striking of centring
none of the above
130.
. The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is
segmental arch
pointed arch
relieving arch
flat arch
131.
. The type of joint commonly used at the junction of a principal rafter and tie beam in timber trussess is
mortise and tennon joint
oblique mortise and tennon joint
butt joint
mitred joint
132.
. The type of roof suitable in plains where rainfall is meagre and temperature is high is
pitched and sloping roof
flat roof
shell roof
none of the above
133.
. Pitched and sloping roofs are suitable for
coastal regions
plain regions
covering large areas
all of the above
134.
. The type of roof which slopes in two directions with a break in the slope on each side is known as
gable roof
hip roof
gambrel roof
mansard roof
135.
. Mansard roof is a roof which slopes in
two directions without break in the slope on each side
two directions with break in the slope on each side
four directions without break in the slope on each side
four directions with break in the slope on each side
136.
. The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called
ridge board
hip rafter
eaves board
valley rafter
137.
. The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as
hip
gable
ridge
eaves
138.
. Higher pitch of the roof i) results in stronger roof ii) results in weaker roof iii) requires more covering material iv) requires less covering material The correct answer is
(i) and (iii)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
139.
. Couple close roof is suitable for maximum span of
2.5 m
3.5 m
4.5 m
5.5 m
140.
. In a colar beam roof
there is no horizontal tie beam
there is a horizontal tie at the feet of rafters only
there is a horizontal tie at almost the middle of rafters only
there are two horizontal ties, one at the feet and other at the middle of the rafters
141.
. The function of king post in a king post roof truss is
to support the frame work of the roof
to receive the ends of principal rafter
to prevent the walls from spreading outward
to prevent the tie beam from sagging at its centre
142.
. The function of cleats in a roof truss is
to support the common rafter
to support purlins
to prevent the purlins from tilting
all of the above
143.
. The term string is used for
the underside of a stair
outer projecting edge of a tread
a sloping member which supports the steps in a stair
a vertical member between two treads
144.
. The vertical posts placed at the top and bottom ends of a flight supporting the hand rail are known as
balusters
newal posts
balustrades
railings
145.
. The maximum number of steps in a flight should generally be restricted to
10
12
15
no limit
146.
. The number of steps in a flight generally should not be less than
2
3
5
no limit
147.
. Sum of tread and rise must lie between
300 to 350 mm
400 to 450 mm
500 to 550 mm
600 to 650 mm
148.
. Minimum width of landing should be
equal to width of stairs
half the width of stairs
twice the width of stairs
one fourth the width of stairs
149.
. In any good staircase, the maximum and minimum pitch respectively should be
90° and 0°
75° and 30°
60° and 10°
40° and 25°
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