Puzzolana – MCQ

1. The word puzzolana is derived from

a) Puzzoli
b) Pozzuoli
c) Puzzolina
d) None of these

2. Puzzolana is

a) Natural
b) Artificial
c) Both

3. Which of the following is the example of a natural puzzolana?

a) Silica fume
b) Fly ash
c) Bavarian trass
d) All of these

4. Which of the following is an example of an artificial puzzolana?

a) Surkhi
b) Ground blast furnace slag
c) Rice husk ash
d) All of these

5. The avarage particle size of silica fume is

a) 0.1 to 0.3
b) 1 to 15
c) 15 to 100
d) 25 to 75

6. Calcined clay puzzolana is also known as

a) Surkhi
c) Homra
d) All of these

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Gypsum – MCQ

Plastic Materials – MCQ

Ceramic Materials – MCQ

Ferrous Metals – MCQ

Gypsum – MCQ

1. Gypsum loses all its water of crystallization at about

a) 50° C.
b) 100° C.
c) 200° C.
d) 300° C.

2. Plaster of paris contains about

a) 4 % of water.
b) 6 % of water.
c) 8 % of water.
d) 10 % of water.

3. Gypsum has

a) Low creep.
b) High bulk density.
c) Negligible shrinkage.
d) Dam proofing properties.

4. Keene’s cement is made from

a) Slag.
b) Gypsum.
c) Lime.
d) Puzzolana.

5. Mack’s cement is made from

a) Slag.
b) Gypsum.
c) Lime.
d) Puzzolana.

6. The number of water molecules present in gypsum is

a) 1/2
b) 1
c) 2
d) 3

7. The number of water molecules present in Plaster of Paris is

a) 1/2
b) 1
c) 2
d) None of these

8. The difference in the number of water molecules in gypsum and plaster of paris is

a) 1/2
b) 1/3
c) 2/3
d) 3/4

9. The setting time of the plaster of paris is delayed by adding retardant

a) Clay.
b) Glue.
c) Cattle hair.
d) All of these.

10. In metallurgical industries the moulds are manufactured from gypsum of variety having

a) α-modification.
b) β-modification.
c) hygroscopicity.
d) Porus structure.

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Ferrous Metals – MCQ

Puzzolana – MCQ

Ceramic Materials – MCQ

Plastic Materials – MCQ

1. Plastics are examples of

a) Elastomers.
b) Corrosive materials.
c) Anhydrides.
d) Polymeric materials.

2. The material which provides maximum elasticity to plastics is

a) Filler.
b) Solvent.
c) Accelerator.
d) Elastomer.

7. Which of the following constituent is added to achieve desired color of the plastics

a) Plasticizer.
b) Pigment.
c) Catalyst.
d) Lubricant.

3. Plasticizers are used to modify plastic to impart

a) Flexibility
b) Toughness
c) Strength
d) All of these

4. Macromolecules are molecules of colloidal dimensions of the order of

a) 10^-6 to 10^-12 mm.
b) 10⁶ to 10¹² mm.
c) 10^-3 to 10^-6 mm.
d) 10³ to 10⁶ mm.

5. Camphor in plastic is used for

a) Resin.
b) Plasticizer.
c) catalyst.
d) filler.

6. Filler is added with plastic to increase its

a) Tensile strength.
b) Opacity.
c) Bonding.
d) All of these.

8. The undesirable properties of plastic is –

a) It has low ductility and melting point.
b) Shock-absorbing material.
c) Light in weight.
d) Corrosion resistance.
e) Not attacked by fungi.

9. The most common pigment used in plastic is

a) Camphor.
b) Ester.
c) Mica.
d) Baryte.

Which of the following is an example of thermoplastic?

a) PVC.
b) Bakelite.
c) Polyethylene.
d) Both (a) and (c).

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Ceramic Materials – MCQ

Building Mortars – MCQ

Plastic Sewer

Building Mortars – MCQ

1. Building mortars are classified into ___ grades based on compressive strength

a) 4 grades
b) 6 grades
c) 7 grades
d) 9 grades

2. Lime mortars are the mixture of

a) Lime, cement, and water.
b) Cement, sand, and water.
c) Hydraulic lime, sand, water.
d) Air-hardening lime, sand, and tarpin.

3. Gauged mortar is the mixture of

a) stone dust, sand, and lime.
b) Lime, cement, sand.
c) Surkhi, lime, cement.
d) Sand, fly ash, cement.

4. After adding cement, the gauged mortar should be used within

a) 15 minutes.
b) 30 to 60 minutes.
c) 1 to 2 hours.
d) 3 to 6 hours.

5. Usually, lime mortar is made with

a) Pure lime.
b) Lean lime.
c) Hydraulic lime.
d) Air-hardening lime.
e) Both (c) or (d).

6. The principal demerit in using lime mortar is that it

a) Sets slowly.
b) Swells.
c) is uneconomical.
d) is not sound.

7. Lime is added to cement mortar because of

a) To increase the setting time.
b) To increase workability.
c) To make it economical.
d) All of these.

8. In the case of making dam-proofing mortars, which of the following type of cement are used

a) Ordinary Portland cement.
b) Rapid hardening cement.
c) Sulphate resisting Portland cement.
d) Low-heat cement.

9. Lime-cement mortar is also known as

a) Guarded mortar.
b) Gauged mortar.
c) Both (a) and (b).
d) Lime mortar.
e) None of these.

Read More:

Ferrous Metal – MCQ

Ceramic Materials – MCQ

Gypsum – MCQ

Principal Properties of Building Materials – MCQ

Ferrous Metals – MCQ

1. The ratio of Young’s modulus of high tensile steel to that of mild steel is about

a) 0.5
b) 1.0
c) 1.5
d) 2.0

2. In mild steel, the iron content is about

a) 50 %
b) 80 %
c) 90 %
d) 99 %

3. The ultimate tensile strength of high carbon steel in N/mm² may be as high as

a) 600
b) 1000
c) 1500
d) 2000

4. Which of the following type of iron is capable of dissolving carbon and non-magnetic

a) Alpha iron
b) Beta iron
c) Gamma iron
d) Delta iron

5. High-strength deformed steel bars with a yield stress of 500 Mpa should have a minimum elongation of

a) 6 %
b) 8 %
c) 13.5 %
d) 20 %

6. Which of the following is the crudest form of iron?

a) Dead mild steel
b) Wrought iron
c) Cast iron
d) Pig iron

7. Which of the following kind of steel is used in case of manufacturing of rails?

a) Cast steel.
b) Bessemer steel.
c) Manganese steel.
d) Mild steel.

8. Molybdenum steel is normally used in the manufacture of

a) Gears
b) Delicated instruments
c) Magnets
d) Point and crossing

9. Tungsten steel which is generally used for the manufacturing of

a) drilling machines.
b) Heavy earth equipment.
c) Heavy mining equipment.
d) Delicate instrument.

10. Which of the following type of iron is non-magnetic and absorbed very little carbon

a) Alpha iron
b) Beta iron
c) Gamma iron
d) Delta iron

11. Which of the following type of iron is strongly magnetic

a) Alpha iron
b) Beta iron
c) Gamma iron
d) Delta iron

Read More:

Composition of Rail Steel

What Are the Benefits of Steel Agricultural Buildings?

How to Calculate the Weight of Steel Bar

Principal Properties of Building Materials – MCQ

Timber – MCQ

1. How many months are required for natural seasoning of timber

a) 1 to 3 months.
b) 4 to 6 months.
c) 8 to 11 months.
d) 12 to 14 months.

2. The drawback of electric seasoning of timber is

a) Checks.
b) Splitting.
c) Cracks.
d) Reduced strength.

3. Lumber

a) Implies a living tree.
b) is a part of felled tree.
c) is log of timber sawn into pieces of desired shape.
d) is used to denote standing timber.

4. The kiln seasoning of timber causes

a) Increase in strength.
b) Decrease in shear strength.
c) Case hardening.
d) No internal stress.

5. As per the I.S code, the weight of the timber is to be considered at a moisture content of

a) 12 %
b) 6 %
c) 2 %
d) zero

6. Seasoning of timber results in

a) Increase in the tendency to decay.
b) Increase in the tendency to split.
c) Increase in the tendency to warp.
d) The moisture present in timber approximately same as that of surroundings.

7. As a natural material timber is an

a) Isotropic material.
b) Heterogeneous material.
c) Homogeneous material.
d) None of these.

8. Timber can be made fire resistant by

a) Kiln seasoning.
b) Sir Abel’s process.
c) Charging.
d) Mc. Neill’s process.

9. The defect in timber causes by fungus is

a) Checks
b) Foxiness
c) Dry rot
d) Wane

10. By reducing the moisture content of timber above fibre saturation points which one of the following is not correct

a) Tensile strength is increased
b) Compressive strength is increased
c) Stiffness is increased
d) Shear strength is increased

11. To obtain strong timber pieces from logs against shrinkage and swelling the best method is

a) Machine sawing
b) Tangential sawing
c) Quarter sawing
d) Radial sawing

12. Fireproofing of timber

a) Makes it difficult to ignite and support its own combustion.
b) Does not allow the fire to come closer to the wood.
c) Extinguishes the fire and dissipate the heat generated.
d) All of these.

Read More:

Characteristics of Good Timber

Stone – MCQ

Precautions in Timbering

Reasons To Use Lumber Takeoff Services

Structural Clay Products – MCQ

1. The Compressive strength of burnt clay bricks as per IS 1077 is

a) 75 kg/cm²
b) 100 kg/cm²
c) 75 – 100 kg/cm²
d) 35 – 350 kg/cm²

2. Glazing of clay products is achieved by throwing sodium chloride in kiln at a temperature of

a) 600° – 800° C
b) 700° – 1000° C
c) 900° – 1100° C
d) 1200° – 1300° C

3. Plasticity to mould clay bricks in proper shape is achieved by

a) Alumina
b) Lime
c) Alkalis
d) Ferric oxide

4. The raw bricks shrink during drying and warp during burning because of

a) Less silica in brick earth
b) Less silica and excess magnesia in brick earth
c) Excess of alumina and silica in brick earth
d) Less lime and excess silica in brick earth

5. Which of the following in the clay used for making bricks decomposes the brick on burning?

a) Iron oxide
b) Iron pyrite
c) Alkali
d) Magnesia

6. When carbonaceous materials in the form of bituminous matter of carbon are presented in the clay, the brick will

a) be spongy
b) have black core
c) be porus
d) have cracks

7. The defect which is seen in the clay products due to imprisoned air during their moulding is called

a) Spots
b) Lamination
c) Blister
d) Cracks

8. Considering the following three stages in the manufacturing of clay bricks:

i. Weathering
ii. Moulding
iii. Tempering

The correct sequence of these stages in the manufacturing of the bricks is

a) (i), (ii), (iii)
b) (ii), (iii), (i)
c) (iii), (ii), (i)
d) (i), (iii), (ii)

9. Pick up the correct statement with regards to clay brick

a) Efflorescence is due to the soluble salts present in the clay
b) High porosity of bricks if, it is there, will make stress distribution uniform.
c) Excessive burning of bricks causes efflorescence
d) Magnesia in brick earth causes brick to warp

10. In the steel industry the brick used for lining furnaces should be

a) Acid refractory
b) Basic refractory
c) Neutral refractory
d) Heavy duty

Read More:

Principal Properties of Building Materials – MCQ

Structures in Clay Minerals – MCQ

Ceramic Materials – MCQ

Different Types of Bricks Used in Construction

Principal Properties of Building Materials – MCQ

1. Low melting point materials are those which can withstand maximum temperatures up to about

a) 34° C
b) 690° C
c) 1350° C
d) 1550° C

2. Density of wood (in g/cm³) ranges between

a) 0.5 – 0.95
b) 1.5 to 1.6
c) 2.5 to 2.8
d) 2.9 to 3.1

3. Which of the following is an example of brittle material

a) Copper
b) Zinc
c) Cast iron
d) Wrought iron

4. Which of the following is an example of plastic materials

a) Cast iron
b) Zinc
c) Brick
d) Concrete

5. High melting point materials are those which can withstand maximum temperatures up to about

a) 34° C
b) 690° C
c) 1350° C
d) 1550° C, or More.

6. For materials subjected to combined bending and torsion, the best theory to estimate breaking load will be

a) Maximum shear stress theory.
b) Strain energy theory.
c) Shear strain energy theory.
d) Maximum stress theory.

7. What will be the shape of the failure surface of a standard cast iron specimen subjected to torque?

a) Cup and cone.
b) Plane surface perpendicular to the axis of the specimen.
c) Helicoid surface at 45 to the axis of the specimen.
d) None of these

8. Consider following for a material under compressive load

⇰ It can be crushed to powder.
⇰ It crumbles to pieces.
⇰ It fails under definite angles.

The material can be

a) Ductile
b) Brittle
c) Viscous
d) Plastic

9. Consider the following stresses with regard to beams.

i. Bending tensile stress.
ii. Bending compressive stress.
iii. Shear stress.

Of the above, a cross-section of the beam will be subjected to

a) (i) and (ii) only
b) (ii) and (iii) only
c) (iii) and (i) only
d) All (i), (ii) and (iii).

10. For a material tested under compression, the plane of rupture was at 58° with horizontal. The best shape of the specimen would be.

a) Cube.
b) of figure 8.
c) Cylinder with height equal to the diameter.
d) Prism with height two times the diameter.

11. For coarse aggregate to be tested for their use in making pavements, the most useful information can be gathered from.

a) Shearing test.
b) Tension test.
c) Compression test.
d) Abrasion test.

12. The modulus of elasticity of a material is 208 GPa and its Poisson’s ratio is 0.3. What is the value of shear modulus?

a) 74 GPa
b) 80 GPa
c) 100 GPa
d) 128.5 Gpa

Read More:

Stone – MCQ

Rocks – MCQ

What is Cement?

Qualities of Good Building Stone