Olete.in – MCQs, Mock Tests & Government Job Prep | Engineering Civil Engineering MCQS -Building Materials Section 2

The rocks in which argil (or clay) predominates; are called

1. sillicious rocks
2. argillaceous rocks
3. calcareous rocks
4. igneous rocks.

✅ Correct Answer: 2

A badly mixed cement concrete results in

1. segregation
2. bleeding
3. honey combing
4. none to these.

✅ Correct Answer: 3

Pick up the correct statement regarding low heat cement from the following:

1. It possesses less compressive strength
2. Its initial setting time is about one hour
3. Its final setting time is about 10 hours
4. All the above.

✅ Correct Answer: 4

Inner part of a timber log surrounding the pith; is called

1. sapwood
2. cambium layer
3. heart wood
4. none to these.

✅ Correct Answer: 3

The filler used in plastic bitumen; is

1. shale powder
2. talc powder
3. asbestos powder
4. plastic powder

✅ Correct Answer: 3

Resins are

1. not soluble in water
2. soluble in spirit
3. used in varnishes
4. all the above.

✅ Correct Answer: 4

Refractory bricks are used for

1. retaining walls
2. columns
3. piers
4. combustion chambers.

✅ Correct Answer: 4

Expanded metal is

1. manufactured from steel sheets
2. used for reinforced concrete in road pavements
3. measured in term of SWM (shortway mesh) and LWM (long way mesh)
4. all the above.

✅ Correct Answer: 4

The rock generally used for roofing; is

1. granite
2. basalt
3. slate
4. pumice.

✅ Correct Answer: 3

Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm; in one direction and 20 cm in the other direction; is called a

1. cant
2. deal
3. baulk
4. strip.

✅ Correct Answer: 3

Quick lime (or caustic lime)

1. is obtained by the calcination of pure lime stone
2. has great affinity to moisture
3. is amorphous
4. all the above.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. soft stones are required for carving
2. light stones are required for arches
3. hard stones are required to stand high pressure
4. all the above.

✅ Correct Answer: 4

Name the type of cement from the following for canal linings :

1. sulphate resisting cement
2. rapid hardening cement
3. quick setting cement
4. pozzuolana cement.

✅ Correct Answer: 1

Mastic asphalt is generally used for

1. damp proof course
2. water proof layer
3. partition walls
4. both (a) and (b).

✅ Correct Answer: 4

Black marble is generally found in the district of

1. Jodhpur
2. Jaipur
3. Jabalpur
4. Jaisalmer

✅ Correct Answer: 2

The most fire resistant paints are :

1. enamel paints
2. aluminium paints
3. asbestos paints
4. cement paints.

✅ Correct Answer: 3

If P is the percentage of water required for normal consistency; water to be added for determination of initial setting time; is

1. 0.70 P
2. 0.75 P
3. 0.80 P
4. 0.85 P

✅ Correct Answer: 4

A pug mill is used for

1. softening brick earth
2. moulding brick earth
3. moulding brick earth
4. providing brick earth

✅ Correct Answer: 3

A good brick earth should contain :

1. about 20% to 30% of alumina
2. about 50% to 60% of silica
3. not more than 5% of lime
4. All the above.

✅ Correct Answer: 4

The commonly used lime in white washing; is

1. white lime
2. fat lime
3. hydraulic lime
4. lime

✅ Correct Answer: 2

Shingle is

1. decomposed laterite
2. crushed granite
3. water bound pebbles
4. air weathered rock.

✅ Correct Answer: 1

Pick up the plutonic rock from the following:

1. Granite
2. Dolerite
3. Basalt
4. All the above.

✅ Correct Answer: 1

The lime which contains mainly calcium oxide and slacks with water; is

1. fat lime
2. quick lime
3. hydraulic lime
4. poor lime

✅ Correct Answer: 2

Seasoning is

1. a process of removing sap
2. creosoting
3. painting with sodium silicate
4. coating with tar.

✅ Correct Answer: 1

Inhaling of fly-ash over a long period causes

1. silicosis
2. fibrosis of lungs
3. bronchitis
4. All of these.

✅ Correct Answer: 4

Minimum required water cement ratio for a workable concrete; is

1. 0.3
2. 0.4
3. 0.5
4. 0.6

✅ Correct Answer: 2

Rocks formed due to alteration of original structure due to heat and excessive pressure are called

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

✅ Correct Answer: 3

Inhaling of fly-ash over a long period causes

1. silicosis
2. fibrosis of lungs
3. bronchitis
4. All of these.

✅ Correct Answer: 4

The compound of Portland cement which contributes to the strength after two to three years is

1. Tricalcium silicate
2. Tricalcium silicate
3. Tricalcium aluminate
4. Tetracalcium alumino ferrite.

✅ Correct Answer: 2

For slaking of 10 kg of CaO; the theoretical amount of water is

1. 2.2 kg
2. 1.5 kg
3. 3.2 kg
4. none of these.

✅ Correct Answer: 3

Pick up the correct statement from the following: Method of sawing timber

1. tangentially to annual rings; is known as tangential method.
2. in four quarters such that each board cuts annual rings at angles not less than 45°; is known as quarter sawing method.
3. cut out of quarter logs; parallel to the medullary rays and perpendicular to annual rings; is known as radial sawing.
4. all the above.

✅ Correct Answer: 4

Clay and silt content in a good brick earth must be at least

1. 50%
2. 40%
3. 30%
4. 25%

✅ Correct Answer: 1

Bessemer process is used for the manufacture of

1. Pig iron
2. cast iron
3. Wrought iron
4. Steel.

✅ Correct Answer: 4

The standard size of masonry bricks; is

1. 18 cm x 8 cm x 8 cm
2. 19 cm x 9 cm x 9 cm
3. 20 cm x 10 cm x 10 cm
4. 21 cm x 11 cm x 11 cm

✅ Correct Answer: 3

Which one of the following is an air binding material ?

1. Gypsum
2. Acid-resistant cement
3. Quick lime
4. All of these.

✅ Correct Answer: 4

A good quality stone absorbs water less than

1. 5%
2. 10%
3. 15%
4. 20%

✅ Correct Answer: 1

Pick up the correct statement from the following:

1. Alexander Parkes; a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it; as Parkesite
2. Dr. L. Bakeland; a Belgian scientist prepared a product known as Bakelite
3. Pollark; an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic
4. All the above.

✅ Correct Answer: 4

Plywood is made from

1. common timber
2. bamboo fibre
3. teak wood only
4. asbestos sheets.

✅ Correct Answer: 3

Soundness test of cement determines

1. quality of free lime
2. ultimate strength
3. durability
4. initial setting

✅ Correct Answer: 1

The slag which floats on the surface of the molten iron generally contains

1. Lime (CaO) 45%
2. Silica (SiO2) 35%
3. Alumina (Al2O3) 12%
4. all the above.

✅ Correct Answer: 4

Minimum of 40% of iron; is available in

1. Magnetite
2. Magnetite
3. Limonite
4. Black band.

✅ Correct Answer: 4

If the iron ore contains clay as an impurity; the flux added during calcination; is

1. clay
2. lime stone
3. argillaceous iron ore
4. all the above.

✅ Correct Answer: 2

Cement is said to be of good quality if

1. its colour is not greenish grey
2. a handful of cement thrown into a bucket of water does not float
3. a handful of cement thrown into a bucket of water does not float
4. none of these.

✅ Correct Answer: 4

Cast steel is manufactured by

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

✅ Correct Answer: 2

For the manufacture of plywood; veneers are placed so that grains of adjacent veneers

1. run at right angles
2. parallel
3. inclined at 45°
4. inclined at 60°.

✅ Correct Answer: 1

A 1st class brick immersed in water for 24 hours; should not absorb water (by weight) more than

1. 10%
2. 15%
3. 20%
4. 25%

✅ Correct Answer: 3

The proportions of charcoal; saltpetre and sulphur in gun powder by weight; are respectively:

1. 15; 75; 10
2. 75; 10; 15
3. 10; 15; 75
4. 10; 75; 15.

✅ Correct Answer: 1

Geologically; marble is known as

1. sedimentary rock
2. igneous rock
3. metamorphic rock
4. stratified rock.

✅ Correct Answer: 3