Olete.in – MCQs, Mock Tests & Government Job Prep | Engineering Civil Engineering MCQS -Building Materials Section 3

The commonly used drying oil for oil paints, is

1. accetate of lead.
2. olive oil
3. linseed oil
4. kerosine oil

✅ Correct Answer: 4

Initial setting of cement is caused due to

1. Tri-calcium silicate
2. Di-calcium silicate
3. Tri-calcium aluminate
4. Tetra calcium alumino ferrite.

✅ Correct Answer: 3

The foliated structure is very common in

1. sedimentary rocks
2. igneous rocks
3. metamorphic rocks
4. none of these.

✅ Correct Answer: 3

Turpentine oil is used in paints as

1. thinner
2. vehicle
3. base
4. drier.

✅ Correct Answer: 1

The hardest rock is

1. marble
2. diamond
3. talc
4. quartz.

✅ Correct Answer: 2

The silica is used for preparing

1. silica bricks
2. coke oven
3. lining for glass furnaces
4. all of these.

✅ Correct Answer: 4

Wrought iron is manufactured from pig iron by

1. refining
2. puddling
3. shingling
4. all the above.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. The phenol is carbolic acid
2. he phenol is either extracted from coal-tar or prepared from benzene
3. Phenol reacts with formaldehyde, to form phenol formaldehyde resin
4. all the above.

✅ Correct Answer: 4

Fibre boards can be

1. distempered
2. painted
3. painted and distempered
4. used for furniture.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. Catalysts are added to assist and accelerate the hardening of resin,
2. The fillers are inert materials and they impart strength and hardness
3. Fibrous fillers increase thermal resistance
4. All the above.

✅ Correct Answer: 4

Portland pozzolana cement possesses

1. higher resistance to chemical attack
2. lower heat of hydration
3. lower shrinkage on drying
4. all the above.

✅ Correct Answer: 4

Iron ore may contain

1. carbon
2. silicon
3. sulphur
4. all the above.

✅ Correct Answer: 4

Wrought iron is used for

1. structural works in beams
2. small sized water pipes
3. columns and struts
4. none to these.

✅ Correct Answer: 2

The timber having maximum resistance against white ants, is obtained from

1. chir
2. shisham
3. sal
4. teak

✅ Correct Answer: 3

Knots in timber are

1. defects caused by crushing fibres
2. splits radiating from the centre
3. speckled strains
4. signs of branches cut off.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. Solder material is an alloy which melts at a temperature above 400°C
2. Brazing is done at temperature above 600°C to 1100°C
3. Brazing joint is stronger than the solder joint
4. all the above.

✅ Correct Answer: 4

Lime concrete is generally used for

1. wall foundations
2. flooring at ground level
3. both (a) and (b)
4. neither (a) nor (b).

✅ Correct Answer: 2

Bituminous fells are used for

1. covering A.C. sheets
2. covering sloping roofs
3. D.P.C.
4. none to these.

✅ Correct Answer: 1

The minimum compressive strength of Ilnd class bricks should be

1. 75 kg/cm2
2. 100 kg/cm2
3. 120 kg/cm2
4. 150 kg/cm2

✅ Correct Answer: 1

Stuco paints are suitable for

1. stone masonry
2. brick walls
3. both (a) and (b)
4. neither (a) nor (b).

✅ Correct Answer: 3

Pick up the correct statement from the following:

1. Corrugated sheet iron is made by passing plain sheets between grooved rollers
2. Strength and stiffness of corrugated sheets are considerably increased
3. Corrugated sheets are generally gal-venised to protect iron from corrosion by rust
4. all the above.

✅ Correct Answer: 4

Quick setting cement is produced by adding

1. less amount of gypsum in very fine powdered form
2. more amount of gypsum in very fine powdered form
3. aluminium sulphate in very fine powdered form
4. pozzolana in very fine powdered form

✅ Correct Answer: 3

Duco is one of the patent forms of

1. emulsion paints
2. plastic paints
3. bituminous paints
4. cellulose paints.

✅ Correct Answer: 4

Pick up the correct statement from the

1. The substance which consists of one primary chemical, is known as monomer
2. The polymer consists of thousands of monomers joined together
3. The polymer molecule is called macro-molecule
4. All the above.

✅ Correct Answer: 4

Bulking of sand is caused due to

1. surface moisture
2. air voids
3. viscosity
4. clay contents

✅ Correct Answer: 1

The normal curing period for lime mortar, is:

1. one day
2. 3 days
3. 7 days
4. 10 days

✅ Correct Answer: 3

The type of steel used for precision levelling staff, is

1. Titanium steel
2. Carbon steel
3. Invar
4. Stainless steel.

✅ Correct Answer: 3

During pudding

1. molten metal is kept clear of the fuel
2. molten metal is kept clear of the fuel
3. silicon forms a slag
4. all the above.

✅ Correct Answer: 4

German silver is an alloy of

1. zinc, lead and nickel
2. silver, gold and lead
3. copper, nickel and zinc
4. copper, brass and zinc

✅ Correct Answer: 3

Pick up the incorrect statement from the following:

1. Plastics are chemical resistant
2. Plastics are durable
3. Plastics are ductile
4. Plastics are excellent electric insulators.

✅ Correct Answer: 3

Pick up correct statement from the following:

1. Fibre boards are used for thermal and acoustic control
2. Fibre boards are used for light weight standing members
3. Fibre boards are obtained by impregnating a resin product on fibres
4. all the above.

✅ Correct Answer: 4

Quartzite, a metamorphic stone is

1. hard
2. brittle
3. crystalline
4. All the above.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. Plastics have generally low melting point
2. The coefficient of thermal expansion of plastics is about three times than that of steel
3. The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
4. All the above.

✅ Correct Answer: 4

Dextrin is

1. animal glue
2. starch glue
3. albumin glue
4. rubber based adhesive

✅ Correct Answer: 4

Dextrin is

1. animal glue
2. starch glue
3. albumin glue
4. rubber based adhesive

✅ Correct Answer: 2

For the manufacture of stainless steel, steel is mixed with

1. chromium
2. nickel
3. tungsten
4. none of these.

✅ Correct Answer: 1

Stones used for ornamental work must be

1. soft
2. hard
3. light
4. heavy

✅ Correct Answer: 1

Pick up the correct statement from the following:

1. Quick lime is obtained by burning pure lime stone:
2. Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
3. Poor lime is obtained by burning lime stone containing impurities more than 5%
4. All the above.

✅ Correct Answer: 4

The presence of original rounded surface on the manufactured piece of timber, is called

1. Wane
2. Torn grain
3. Diagonal grain
4. Chipmark.

✅ Correct Answer: 1

Smith's test of stones is performed to find out

1. the presence of soluble matter of stone
2. the compressive strength of the stone
3. the hardness of the stone
4. the toughness of the stone.

✅ Correct Answer: 1

The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:

1. radial shakes
2. heart shakes
3. wind cracks
4. twisted fibres

✅ Correct Answer: 3

The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called

1. Cementation process
2. crucible process
3. Bessemer process
4. Open hearth process.

✅ Correct Answer: 1

In paints, the pigment is responsible for

1. durability
2. colour
3. smoothness
4. None of these.

✅ Correct Answer: 2

The operation of removal of impurities or clay adhering to iron ores, is known as

1. dressing
2. dressing
3. roasting
4. smelting.

✅ Correct Answer: 1

If water required for 1 bag of cement is 30 litres, the water cement ratio is :

1. 0.4
2. 0.5
3. 0.6
4. None of these.

✅ Correct Answer: 3

Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

1. quick setting cement
2. rapid hardening cement
3. white cement
4. low heat Portland cement.

✅ Correct Answer: 3

Dry rot

1. cracks the timber
2. reduces the strength of timber
3. reduces the timber to powder
4. shrinks the timber

✅ Correct Answer: 3

Which one of the following polymers is obtained from condensation polymerization ?

1. phenol formaldehyde
2. carbamide
3. melamine-formaldehyde
4. all of these.

✅ Correct Answer: 4

The weight of 1 m3 of brick earth, is about

1. 1200 kg
2. 1500 kg
3. 1800 kg
4. 2000 kg

✅ Correct Answer: 3

Pozzolana (or surkhi) is used in lime

1. to impart hydraulicity
2. to prevent shrinkage
3. to decrease the cost of construction
4. to decrease the setting time.

✅ Correct Answer: 1