Concrete MCQs cover the MCQs on the following topics;
- Test on concrete
- Properties of concrete
- Composition of concrete
- Manufacturer of concrete
In terms of ____, the result of the Vee-Bee test is expressed.
(A). s
(B). m
(C). N/mm2
(D). kg
(E). None of these
The Answer of Question: a
The strength of concrete differ with the age of concrete as ______
(A). Increases, then decreases
(B). Decreases
(C). No effect
(D). Increases
(E). None of these
The Answer of Question: d
Due to loading is termed as ______ permanent dimension changes.
(A). Creep
(B). Extent
(C). Strain
(D). Ambit
(E). None of these
The Answer of Question: a
____ admixture is used to improve workability.
(A). Reducers
(B). Metakaolin
(C). Plasticizers
(D). Accelerators
(E). None of these
The Answer of Question: c
With time the workability reduces.
(A). True
(B). False
(E). None of these
The Answer of Question: a
When concrete is ____ bleeding is good to an extent if it occurs.
(A). Transported
(B). Mixed
(C). Placed
(D). Plastic
(E). None of these
The Answer of Question: d
For ___ the M15 concrete is used.
(A). Dams
(B). R.C.C
(C). Foundation
(D). Mass concreting works
(E). None of these
The Answer of Question: c
Using _____ the tensile strength is found out.
(A). Split tensile test
(B). Gradual tensile test
(C). CTM
(D). Radial tensile test
(E). None of these
The Answer of Question: a
Flexure strength is determined as_____
(A). Modulus of rigidity
(B). Modulus of elasticity
(C). Modulus of plasticity
(D). Modulus of rupture
(E). None of these
The Answer of Question: c
Compaction factor is _____ for a heavily reinforced section with vibration.
(A). <0.75
(B). 0.75-0.85
(C). 0.85-0.92
(D). >0.92
(E). None of these
The Answer of Question: c
In _____ layers, the concrete is filled in slump cone in slump test.
(A). 3
(B). 2
(C). 6
(D). 4
(E). None of these
The Answer of Question: d
For ___ a slump of 50-100mm can be used.
(A). Beams
(B). Strip footing
(C). Trench fill
(D). Mass concreting
(E). None of these
The Answer of Question: a
There are ____ hoppers in the compaction factor test.
(A). 1
(B). 4
(C). 2
(D). 3
(E). None of these
The Answer of Question: c
Equivalent cubes strength can be found using _____ if cylinder specimen is used to test compressive strength.
(A). 3/4th strength of the cylinder
(B). 1/4th strength of the cylinder
(C). 5/6th strength of the cylinder
(D). 5/4th strength of the cylinder
(E). None of these
The Answer of Question: d
In____ the ready mix plant and central mix plant differ.
(A). Transportation
(B). Water addition
(C). Properties
(D). Setting time
(E). None of these
The Answer of Question: b
There are____ methods of batching.
(A). 2
(B). 3
(C). 5
(D). 6
(E). None of these
The Answer of Question: a
Concrete can be poured at____ which is the maximum height.
(A). 0.1-0.6 m
(B). 0.5 m
(C). 0.8-1 m
(D). 2 m
(E). None of these
The Answer of Question: c
There are ___ types of machine mixers are available.
(A). 2
(B). 5
(C). 6
(D). 3
(E). None of these
The Answer of Question: d
Concrete is transported using ____ in small works.
(A). Pans
(B). Pumps
(C). Conveyor belts
(D). Buckets
(E). None of these
The Answer of Question: a
In the manufacturing process___ process comes after batching.
(A). Mixing
(B). Placing
(C). Transportation
(D). Compacting
(E). None of these
The Answer of Question: a
For_____ compacting is done.
(A). Place concrete on a flat surface
(B). Remove air bubbles
(C). Place concrete on a sloping surface
(D). Introduce air bubbles
(E). None of these
The Answer of Question: b
On a ____ concrete is generally placed.
(A). Platform
(B). Stand
(C). Mould
(D). Form work
(E). None of these
The Answer of Question: d
____ is the best method for curing flat surfaces.
(A). Spraying water
(B). Placing wet gunny bags
(C). Applying curing compounds
(D). Stagnating water
(E). None of these
The Answer of Question: d
Excess vibration can lead to ____ during compacting.
(A). Segregation
(B). Bleeding
(C). High strength
(D). Air bubbles
(E). None of these
The Answer of Question: a
For ____ steam, curing is adopted.
(A). Beams
(B). Columns
(C). Precast structures
(D). Walls
(E). None of these
The Answer of Question: c
While storing cement a gap of 0.3m is to maintained between cement bag and wall.
(A). True
(B). False
(E). None of these
The Answer of Question: a
In ____ the properties of concrete can broadly be divided.
(A). 8
(B). 6
(C). 4
(D). 2
(E). None of these
The Answer of Question: d
The accumulation of water is____ on the outer surface of the concrete.
(A). Transpiration
(B). Guttation
(C). Bleeding
(D). Ponding
(E). None of these
The Answer of Question: c
_____ property of aggregates is not desirable.
(A). Angular shape
(B). Well graded
(C). Smooth texture
(D). Smaller size
(E). None of these
The Answer of Question: a
The tensile strength of concrete is taken as _____ in the design of R.C.C structures.
(A). 0N/mm2
(B). 2N/mm2
(C). 0.3N/mm2
(D). 5N/mm2
(E). None of these
The Answer of Question: a
The _________, higher the cement content is.
(A). Higher aggregates
(B). Higher strength
(C). Lower workability
(D). Lower strength
(E). None of these
The Answer of Question: b
E is calculated using ____ in modulus of elasticity.
(A). E=5
(B). E=500
(C). E=50
(D). E=5000
(E). None of these
The Answer of Question: d
