Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product
Correct Answer :
B. A mixture of cement and asphalt
Related Questions
A mortar joint in masonry which is normal to the face of wall is known as
Bed joint
Wall joint
Cross joint
Bonded joint
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
Trowel
Square
Bolster
Scutch
Dorry's testing machine is used for
Crushing test of stone
Hardness test of stone
Impact test of stone
Water absorption test
Duco is one of the patent forms of
Emulsion paints
Plastic paints
Bituminous paints
Cellulose paints
Second class bricks
Are of dark brown colour
Produce a metallic sound when struck
Are well burnt
Are under burnt
Pick up the correct statement from the following:
Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
Cupola furnace is used for the manufacture of cast iron
Red short iron is of no value for welding purpose
All the above
Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
Absence of sun light
Dampness
Presence of sap
All the above
The minimum compressive strength of 2nd class bricks should be
75 kg/cm2
90 kg/cm2
100 kg/cm2
120 kg/cm2
Pick up the correct statement from the following:
Roasting is not necessary if iron ore is an oxide
Impurities float on the molten iron as slag
The slag contains lime about 45%
All the above
For the manufacture of plywood, veneers are placed so that grains of adjacent veneers
Run at right angles
Parallel
Inclined at 45°
Inclined at 60°
Which of the following metamorphic rocks has the most weather resisting characteristics?
Marble
Quartzite
Slate
Lime stone
The weight of 1 m3 of brick earth, is about
1200 kg
1500 kg
1800 kg
2000 kg
A bull nose brick is not used for
Rounding off sharp corners
Pillars
Decoration purpose
Arches
The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
Closer
Queen closer
King closer
Prince closer
Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below:
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Chemically, marble is known as
Metamorphic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Bitumen is generally obtained from
Organic material
Synthetic material
Petroleum product
Coal
The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
Less than 1
Equal to 1
Greater than 1
Less than 1 in beams but greater than 1 in channels
Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below:
Both A and R is true and R is correct explanation of A
Both A and R is true and R is not a correct explanation of A
A is true but R is false
A is false but R is true
Hydraulic lime is obtained by
Burning of lime stone
Burning of kankar
Adding water to quick lime
Calcination of pure clay
Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a
Cant
Deal
Baulk
Strip
The thermosetting plastic
Becomes rigid when moulded at suitable pressure and temperature
At 127°C to 177°C permanently set and further application of heat does not soften it
Chars at 343°C
All the above
Addition of pozzolana to ordinary Portland cement increases
Bleeding
Shrinkage
Permeability
Heat of hydration
The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
20
15
5
0
Cast iron contains carbon approximately
1.5% to 5.5%
0.05% to 1.75%
0.250 %
None to these
Bitumen completely dissolves in
Carbon bisulphide
Chloroform
Coal tar
All of these
Pick up the correct statement from the following:
The low voltage porcelain is prepared by wet process
The high voltage porcelain is prepared by dry process
The low voltage porcelain is prepared by dry process
None of the above
The most commonly used base for timber painting, is
Red lead
Zinc white
White lead
Titanium white
The stretcher bond in brick masonry can be used only when the thickness of wall is
90 mm
180 mm
190 mm
280 mm
Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)