Building Materials
Quicklime is a
- Product left immediately after the calcination of pure limestone
- Oxide of calcium
- Carbonate of lime
- Lime quickly treated with water
The steel mould used for slump test is in the form of a
- Cube
- Cylinder
- Frustum of cone
- Prism
Which of the following is primarily responsible for the corrosion resistance of stainless steel?
- Carbon
- Sulphur
- Chromium
- Vanadium
Efflorescence of bricks is due to
(i) Soluble salts present in the parent clay
(ii) High porosity of bricks
- Only (i)
- Only (ii)
- Both (i) and (ii)
- Neither (i) nor (ii)
Addition of fibers will improve which characteristic(s) of concrete
(i) Compression strength
(ii) Flexure strength
(iii) Shrinkage resistance
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii) and (iii)
Building Materials
Maximum bulking of sand is likely to occur at a moisture content of
- 4%
- 8%
- 12%
- 16%
Given a cross-section of following woods and a similar bending moment, which of them will have highest bending strength?
- 50 mm × 75 mm of Sag wood
- 50 mm × 75 mm of Teak wood
- 50 mm diameter of Eucalyptus wood
- 50 mm diameter hollow bamboo with 10 mm thickness
A modern suitable trend of using Bamboo Pre-fabrication Construction technology will result in which of the following advantages
(i) Rapid construction
(ii) Light weight construction
(iii) Carbon sequestration
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii) and (iii)
The function of coping is to serve as a
(i) covering to wall to throw off water
(ii) shade against solar radiation
- Only (i)
- Only (ii)
- Both (i) and (ii)
- Neither (i) nor (ii)
In order to prevent Alkali-aggregate reaction, low alkali cement can be used, in such a case what is the maximum permissible percentage of fly ash allowed in concrete mix design?
- 10%
- 20%
- 30%
- 40%
Building Materials
In cements, generally the increase in strength during a period of 14 days to 28 days is primarily due to
- C4AF
- C3S
- C2S
- C3A
What is a correct sequence for average bending strength of different ply boards mentioned under?
- Veneered Particle Board > Block boards > Fiber hard boards > Wood Particle boards
- Fiber hard boards > Block boards > Veneered Particle Board > Wood Particle boards
- Block boards > Veneered Particle Board > Fiber hard boards > Wood Particle boards
- Block boards > Wood Particle boards > Veneered Particle Board > Fiber hard boards
Mainly used in its pure form, which of the following metals is the densest, weakest and softest compared to other given metals?
- Tin
- Nickel
- Lead
- Aluminum
As per Indian Standard 10262-2009, maximum water content required to prepare concrete with 20 mm nominal maximum size of aggregate is
- 208 kgs/m³
- 186 kgs/m³
- 165 kgs/m³
- 145 kgs/m³
In the foundation of abutments or dams, most suitable cement is
- Ordinary Portland cement
- Rapid hardening cement
- High alumina cement
- Low heat Portland cement
Building Materials
Aggregate crushing value for the aggregates to be used in concrete for wearing surfaces such as runways, roads, pavements, spillways, etc. shall not be more than
- 10%
- 20%
- 25%
- 30%
Seasoning of timber is done for
- Increasing moisture content
- Decreasing moisture content
- Both (A) and (B)
- None of the above
The material used for the manufacture of geotextile is
- Polythene
- Nylon
- Polyester
- All of the above
Which of the following stones is recommended for carved and ornamental works in buildings?
- Gneisses
- Granite
- Sandstone
- Dolomite
During the process of hydration of cement, due to increase in Dicalcium Silicate (C2S) content in cement clinker, the heat of hydration
- increases
- initially decreases and then increases
- decreases
- does not change
Click Here For All Building Materials GPSC PYQs MCQs Practice
Click Here For All GPSC (Civil) PYQs Free MCQs Practice
