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WorksheetsD63 MASTER THE DAY
Total questions: 115
Worksheet time: 2hrs 55mins
Name
Class
Date
1.
What is the minimum initial setting time of OPC as per IS standards?
a)
10 minutes
b)
45 minutes
c)
30 minutes
d)
60 minutes
2.
Which IS code specifies the requirements for TMT bars?
a)
IS 432
b)
IS 456
c)
IS 383
d)
IS 1786
3.
What is the function of stirrups in RCC beams?
a)
Prevent deflection
b)
Resist tensile stresses
c)
Support axial loads
d)
Resist shear stresses
4.
The IS code for plain and reinforced concrete is:
a)
IS 456
b)
IS 383
c)
IS 1139
d)
IS 269
5.
Which property of reinforcement allows it to elongate before failure?
a)
Yield strength
b)
Compressive strength
c)
Bond strength
d)
Ductility
6.
What is the typical range of water-cement ratio for RCC?
a)
0.6 to 0.9
b)
0.2 to 0.4
c)
0.4 to 0.6
d)
0.5 to 0.8
7.
What does 'Bt' denote in RCC bar notation?
a)
Base tie
b)
Bent bar
c)
Bolt type
d)
Bottom bar
8.
Which structural element primarily resists bending moments?
a)
Footing
b)
Slab
c)
Column
d)
Beam
9.
Why are deformed bars preferred over plain bars in RCC?
a)
They reduce shrinkage
b)
They are lighter
c)
They improve bond with concrete
d)
They are cheaper
10.
Which of the following is a flexural member?
a)
Slab
b)
Footing
c)
Wall
d)
Column
11.
Which of the following is not a component of concrete?
a)
Cement
b)
Aggregate
c)
Water
d)
Steel
12.
What is the minimum clear cover for slabs?
a)
25 mm
b)
15 mm
c)
20 mm
d)
10 mm
13.
What is the function of clear cover in RCC?
a)
Reduce cracking
b)
Protect reinforcement from corrosion
c)
Improve appearance
d)
Increase load capacity
14.
What does 'Ct' stand for in RCC drawings?
a)
Core thickness
b)
Concrete type
c)
Column tie
d)
Corner tie
15.
A simply supported beam carrying a UDL has maximum bending moment at:
a)
Quarter span
b)
Support
c)
End
d)
Centre
16.
Which of the following has the lowest compressive strength?
a)
Aluminium
b)
Steel
c)
Concrete
d)
Granite
17.
In RCC, the load is transferred through:
a)
Friction
b)
Only concrete
c)
Bond between steel and concrete
d)
Only steel
18.
Which material is NOT used as coarse aggregate in RCC?
a)
Broken bricks
b)
Sand
c)
Crushed stone
d)
Gravel
19.
Which of the following increases with proper aggregate grading?
a)
Void ratio
b)
Shrinkage
c)
Workability
d)
Water demand
20.
The abbreviation 'St' in RCC denotes:
a)
Structural tie
b)
Steel type
c)
Support terminal
d)
Straight bar
21.
Which type of bar is preferred when maximum bond strength is required in RCC?
a)
Mild steel bar
b)
Twisted bar
c)
Plain round bar
d)
Deformed bar
22.
Which IS code is used for hot rolled deformed bars?
a)
IS 226
b)
IS 456
c)
IS 432
d)
IS 1139
23.
Which structural member is used primarily to carry axial loads?
a)
Slab
b)
Beam
c)
Column
d)
Footing
24.
What is the key role of water in concrete mix?
a)
Improve color
b)
Reduce strength
c)
Initiate hydration
d)
Increase voids
25.
Which of the following is a non-uniformly distributed load?
a)
UDL
b)
Point Load
c)
Trapezoidal Load
d)
Axial Load
26.
Which abbreviation stands for longitudinal wall in RCC drawings?
a)
LL
b)
WL
c)
Wx
d)
LW
27.
Which bar is primarily used for ties and stirrups in RCC?
a)
Fe 415
b)
TMT
c)
Fe 500
d)
Fe 250
28.
What is the characteristic compressive strength of M20 concrete?
a)
10 N/mm²
b)
25 N/mm²
c)
15 N/mm²
d)
20 N/mm²
29.
Which component improves the density of concrete when well graded?
a)
Aggregate
b)
Steel
c)
Cement
d)
Water
30.
Statement: RCC can resist both compression and tension effectively.
a)
True
b)
Partially True
c)
False
d)
True only in slabs
31.
What does 'GR' represent in RCC structural drawings?
a)
Grading
b)
Grid reinforcement
c)
Ground beam
d)
Girder
32.
Which RCC component is subjected to maximum bending?
a)
Footing
b)
Column
c)
Beam
d)
Slab
33.
Which RCC member needs maximum clear cover?
a)
Foundation
b)
Slab
c)
Beam
d)
Column
34.
Which code applies to welded steel wire fabric in RCC?
a)
IS 432
b)
IS 1139
c)
IS 456
d)
IS 1566
35.
Concrete is most strong in:
a)
Compression
b)
Tension
c)
Bending
d)
Shear
36.
Which bar diameter is not commonly used in normal RCC building works?
a)
12 mm
b)
20 mm
c)
45 mm
d)
36 mm
37.
How does twisting affect the steel bar's yield strength?
a)
No effect
b)
Reduces ductility only
c)
Decreases yield strength
d)
Increases yield strength
38.
Which RCC beam type has both ends built into the supports?
a)
Fixed beam
b)
Simply supported beam
c)
Overhanging beam
d)
Continuous beam
39.
Which RCC member usually receives the maximum axial compressive load?
a)
Slab
b)
Footing
c)
Column
d)
Beam
40.
Which of the following is NOT an advantage of RCC?
a)
Moldability into any shape
b)
Fire resistance
c)
Low maintenance
d)
Weak in tension
41.
What is the role of stirrups in a reinforced concrete beam?
a)
Improve bond
b)
Resist shear
c)
Provide anchorage
d)
Resist axial load
42.
Which reinforcement bar has the highest ductility?
a)
Cold Twisted Bars
b)
Fe 500
c)
Fe 415
d)
Mild Steel (Fe 250)
43.
Concrete's compressive strength is measured using:
a)
Rebound hammer
b)
Flexure test
c)
28-day cube test
d)
7-day slump test
44.
What is the IS code for Portland slag cement?
a)
IS 269
b)
IS 1489
c)
IS 8043
d)
IS 455
45.
The bar spacing notation '20 @ 200' implies:
a)
200 mm diameter bars at 20 mm spacing
b)
20 bars of 200 mm length
c)
200 bars at 20 mm spacing
d)
20 mm bars at 200 mm center-to-center
46.
Which RCC beam type is supported at more than two points?
a)
Simply supported beam
b)
Fixed beam
c)
Continuous beam
d)
Cantilever beam
47.
Which RCC member is mostly subjected to direct tension?
a)
Lintel
b)
Column
c)
Tie beam
d)
Footing
48.
What is the typical size of cube used for testing concrete strength?
a)
100 mm
b)
200 mm
c)
50 mm
d)
150 mm
49.
Which RCC member primarily resists transverse loads?
a)
Column
b)
Pile
c)
Footing
d)
Beam
50.
What is the abbreviation 'Sp' used for in RCC bar notations?
a)
Spacing bar
b)
Spiral
c)
Spacer
d)
Splice bar
51.
Which steel type is used in heavy loading structures?
a)
Mild Steel
b)
Hard Drawn Steel
c)
TMT Fe 500
d)
Medium Tensile Steel
52.
Which bar form offers the best resistance to slipping?
a)
Twisted bars
b)
Plain bars
c)
Square bars
d)
Deformed bars
53.
Which part of RCC work has to resist diagonal tensile stresses?
a)
Cover block
b)
Concrete matrix
c)
Longitudinal bar
d)
Shear reinforcement
54.
Which cement grade is not generally used for RCC?
a)
53 grade
b)
PPC
c)
43 grade
d)
33 grade
55.
What is the recommended minimum clear cover for RCC beams?
a)
25 mm
b)
40 mm
c)
50 mm
d)
15 mm
56.
Which RCC member typically carries loads from columns to soil?
a)
Footing
b)
Beam
c)
Plinth beam
d)
Slab
57.
What is the minimum yield stress for Fe 415 steel?
a)
415 MPa
b)
500 MPa
c)
275 MPa
d)
250 MPa
58.
Assertion (A): Clear cover in RCC protects reinforcement from corrosion.
Reason (R): Concrete is permeable and allows moisture to reach steel bars.
a)
A is true but R is false
b)
A is false but R is true
c)
Both A and R are true and R is the correct explanation of A
d)
Both A and R are true but R is not the correct explanation of A
59.
What is the purpose of using cover blocks in RCC?
a)
To anchor steel
b)
To reduce concrete strength
c)
To increase load
d)
To prevent corrosion of steel
60.
What happens when the water-cement ratio is too high?
a)
Shrinkage reduces
b)
Curing time reduces
c)
Porosity increases
d)
Strength increases
61.
Which type of beam is statically indeterminate?
a)
Fixed
b)
Cantilever
c)
Overhanging
d)
Simply supported
62.
Which IS code covers hydrophobic cement?
a)
IS 269
b)
IS 8041
c)
IS 8043
d)
IS 455
63.
Which member resists load from slab and transfers to column?
a)
Lintel
b)
Beam
c)
Tie bar
d)
Footing
64.
Which bar shape improves anchorage at beam ends?
a)
Straight
b)
Spiral
c)
Hooked
d)
Square
65.
Which member of RCC faces flexural stress the most?
a)
Footing
b)
Slab
c)
Column
d)
Beam
66.
What does the abbreviation ‘Alt’ refer to in RCC drawings?
a)
Angle top
b)
Axial tie
c)
Alternate bar
d)
Anchor loop
67.
Which RCC structure element connects foundation footings?
a)
Lintel
b)
Tie beam
c)
Plinth beam
d)
Column
68.
Which cement is most suitable for marine RCC works?
a)
OPC
b)
PPC
c)
Rapid hardening
d)
PSC
69.
Which type of RCC bar is used in spiral columns?
a)
Deformed
b)
Hooked
c)
Straight
d)
Spiral
70.
Which RCC element supports a wall over a door or window?
a)
Lintel
b)
Slab
c)
Tie
d)
Beam
71.
What does a sagging bending moment indicate?
a)
Concave curvature
b)
Convex curvature
c)
Negative moment
d)
Upward curve
72.
What property of steel helps bond with concrete?
a)
Rough surface
b)
Thermal expansion
c)
Elasticity
d)
Ductility
73.
What is the typical diameter of stirrup bars?
a)
12–16 mm
b)
25–40 mm
c)
18–25 mm
d)
6–8 mm
74.
Which element transfers load from slab to footing through beam?
a)
Stirrup
b)
Column
c)
Lintel
d)
Plinth beam
75.
Match the following RCC materials with their relevant IS codes:
A. OPC 43 Grade
B. Aggregates
C. TMT Bars
D. Welded Wire Fabric
1. IS 1786
2. IS 383
3. IS 8112
4. IS 1566
a)
A-3, B-2, C-1, D-4
b)
A-4, B-3, C-2, D-1
c)
A-3, B-4, C-2, D-1
d)
A-1, B-2, C-3, D-4
76.
What is the most important property of water used in concrete mixing?
a)
It must be acidic
b)
It must be drinkable
c)
It should be saline
d)
It must be soft
77.
Which component of concrete governs its early strength?
a)
Water
b)
Coarse aggregate
c)
Cement
d)
Fine aggregate
78.
What is the typical spacing of stirrups near beam supports?
a)
Less than mid-span
b)
More than mid-span
c)
Equal to mid-span
d)
Not provided near support
79.
What is the role of dowel bars in RCC?
a)
Improve flexure
b)
Transfer load at joints
c)
Control shrinkage
d)
Act as stirrups
80.
Which concrete grade is used for road pavement as per IRC?
a)
M25
b)
M15
c)
M30
d)
M20
81.
What is the unit of characteristic strength of concrete?
a)
N/mm²
b)
N/cm²
c)
kg/cm²
d)
kN/m²
82.
Which RCC element distributes column loads to the ground?
a)
Slab
b)
Footing
c)
Tie Beam
d)
Lintel
83.
Which IS code specifies properties of fine and coarse aggregates?
a)
IS 432
b)
IS 383
c)
IS 456
d)
IS 269
84.
What is the most common size of aggregate for RCC?
a)
50 mm
b)
5 mm
c)
20 mm
d)
10 mm
85.
Which bar type has more yield strength?
a)
Fe 550
b)
Fe 500
c)
Fe 250
d)
Fe 415
86.
Which RCC beam type has one end fixed and one end free?
a)
Fixed
b)
Cantilever
c)
Overhanging
d)
Simply Supported
87.
What does a hogging moment indicate?
a)
Bending is convex upward
b)
Beam is deflecting upward
c)
Sagging profile
d)
Tension is at bottom
88.
Which cement type is suitable for mass concreting?
a)
Low heat cement
b)
Rapid hardening cement
c)
Sulphate resisting cement
d)
OPC 53
89.
What is the abbreviation for top bar in RCC drawings?
a)
Ct
b)
Bt
c)
T
d)
St
90.
Which IS code covers Rapid Hardening Portland Cement?
a)
IS 455
b)
IS 8043
c)
IS 269
d)
IS 8041
91.
What does 0.55fy represent in design?
a)
Design bond stress
b)
Permissible stress in HYSD
c)
Modulus of elasticity
d)
Allowable stress in bending
92.
What is the usual clear cover in slabs?
a)
25 mm
b)
10 mm
c)
20 mm
d)
15 mm
93.
Which RCC component helps control temperature and shrinkage cracks?
a)
Stirrups
b)
Distribution bar
c)
Column tie
d)
Main bar
94.
Which cement is preferred where sulphates are present in soil?
a)
Rapid Hardening Cement
b)
Ordinary Portland Cement
c)
Sulphate Resisting Cement
d)
Portland Pozzolana Cement
95.
Which IS code is used for general guidelines of RCC design and construction?
a)
IS 383
b)
IS 456
c)
IS 269
d)
IS 1786
96.
What is the minimum compressive strength of M15 concrete?
a)
10 N/mm²
b)
15 N/mm²
c)
20 N/mm²
d)
25 N/mm²
97.
Which test is used to assess workability of concrete?
a)
Slump Test
b)
Impact Test
c)
Cube Test
d)
Flexural Test
98.
Which type of reinforcement is commonly used in retaining walls?
a)
Fe 250 bars
b)
HYSD bars
c)
Steel wires
d)
Plain mild steel
99.
In RCC, where is tension reinforcement generally placed in beams?
a)
Top
b)
Sides
c)
Bottom
d)
Middle
100.
Which material is used to prevent rusting of reinforcement during storage?
a)
Lime wash
b)
Bitumen coating
c)
Red oxide paint
d)
Cement slurry
101.
What is the purpose of lapping bars in RCC?
a)
To reduce load
b)
To prevent bond failure
c)
To provide continuity
d)
To prevent buckling
102.
Which RCC element is mainly responsible for resisting lateral loads?
a)
Slab
b)
Beam
c)
Column
d)
Shear wall
103.
Which reinforcement pattern is used in two-way slabs?
a)
Double layer in one direction
b)
Two layers at right angles
c)
Radial reinforcement
d)
Single layer in one direction
104.
Which IS code is referred for design of RCC water retaining structures?
a)
IS 3370
b)
IS 456
c)
IS 875
d)
IS 800
105.
Why is curing of concrete important?
a)
To increase porosity
b)
To maintain moisture for hydration
c)
To decrease strength
d)
To reduce water content
106.
Which structural defect is caused by inadequate curing?
a)
Bleeding
b)
Shrinkage cracks
c)
Efflorescence
d)
Pitting
107.
Which method is used to bend reinforcement bars?
a)
Bar bending machine
b)
Welding
c)
Cutting torch
d)
Hammering
108.
What is the purpose of using development length in RCC?
a)
To enhance stiffness
b)
To bond bar with concrete
c)
To increase durability
d)
To resist cracking
109.
What is the typical angle used for hooks in bar bending?
a)
90°
b)
180°
c)
60°
d)
135°
110.
What is the minimum grade of concrete used for RCC?
a)
M20
b)
M10
c)
M15
d)
M25
111.
Which component in RCC acts as the primary binder?
a)
Gravel
b)
Water
c)
Sand
d)
Cement
112.
Which RCC structure has higher reinforcement percentage?
a)
Column
b)
Footing
c)
Slab
d)
Beam
113.
Which tool is used to cut reinforcement bars?
a)
Chisel
b)
Gas cutter
c)
Bar cutter
d)
Hacksaw
114.
What is the major cause of honeycombing in concrete?
a)
Excess water
b)
Rich mix
c)
Over curing
d)
Improper compaction
115.
Statement: Concrete has high tensile strength and low compressive strength.
Is the statement correct?
a)
True
b)
Partially True
c)
False
d)
Depends on grade
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