For the manufacture of stainless steel, steel is mixed with
Chromium
Nickel
Tungsten
None of these
Correct Answer :
A. Chromium
Related Questions
The lime which contains mainly calcium oxide and slacks with water, is
Fat lime
Quick lime
Hydraulic lime
Poor lime
Cement paints usually
Contain hydrated lime
Contain 5% to 10% colour pigments
Contain 5% sodium chloride
All the above
Pick up the incorrect statement from the following:
Plastics are chemical resistant
Plastics are durable
Plastics are ductile
Plastics are excellent electric insulators
The hardest rock is
Marble
Diamond
Talc
Quartz
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
Pick up the correct statement from the following:
The average crushing strength of hand moulded bricks is 6000 t/m2
The average tensile strength of hand moulded brick is 200 t/m2
The average shearing strength of hand moulded brick is 600 t/m2
All the above
The pigment used in paints for corrosive resistance, is
White lead
Ferrous oxide
Zinc white
Red lead
The stretcher bond in brick masonry can be used only when the thickness of wall is
90 mm
180 mm
190 mm
280 mm
Ground glass
Is made by grinding its one side
Is made by melting powdered glass paints surface
Is used for getting light without transparency
All the above
Which of the following is a mineral?
Basalt
Granite
Quartz
Syenite
Stones used for the construction of retaining walls must be
Soft
Hard
Light
Heavy
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
Crushing strength of a first class brick should not be less than
3.5 N/mm²
7.0 N/mm²
10.5 N/mm²
14.0 N/mm²
Granite is not suitable for ordinary building purpose because
It cannot be polished
It is not a fire proof material
It is costly
It has less crushing strength
Pick up the correct statement from the following:
Soft stones are required for carving
Light stones are required for arches
Hard stones are required to stand high pressure
All the above
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
Crushing strength of a good building stone should be more than
50 MPa
100 MPa
150 MPa
200 MPa
The practical limit of moisture content achieved in air drying of timber is
5 %
15 %
25 %
35 %
The amount of water used for one kg of distemper is
0.2 liter
0.4 liter
0.6 liter
0.8 liter
According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than
7 MPa
11.5 MPa
16 MPa
21 MPa
Pug mill is used for
Preparation of clay
Moulding of clay
Drying of bricks
Burning of bricks
When a brick is immersed in water for 24 hours and then dried, if
No grey or white deposits appear on the surface, the brick is free from soluble salts
10 percent surface is covered with grey or white deposits, the brick has slight efflorescence
50 percent surface is covered with grey or white deposits, the brick has serious efflorescence
All the above
Which of the following trees yields hard wood?
Deodar
Chir
Shishum
Pine
Plastic bitumen is generally used for
Road pavements
Expansion joints
Crack fillings
None to these
Asbestos is
Corrugated sheet used for roofing
An incombustible fire proof material
An organic substance
All the above
Cast iron is used for
Structural works in beams
Small sized water pipes
Columns and struts
None to these
Pick up the correct statement from the following:
Quick lime is obtained by burning pure lime stone
Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
Poor lime is obtained by burning lime stone containing impurities more than 5%
All the above
Dolomite is a lime stone which contains carbonate of magnesia upto
15 %
20 %
25 %
45 %
The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
15, 75, 10
75, 10, 15
10, 15, 75
10, 75, 15
Lime concrete is generally used for
Wall foundations
Flooring at ground level
Both (A) and (B)
Neither (A) nor (B)