The material generally not used as extender in paints, is
Powdered silica
Gypsum
Talc
Zinc white
Correct Answer :
D. Zinc white
Related Questions
Pick up the rock which is not a sedimentary rock from the following:
Gravel
Sand stone
Gypsum
Dolerite
Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
Alumina
Lime
Iron-oxide
Magnesia
For light and ornamental casting, the most unsuitable pig iron, is
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
Bituminous fells are used for
Covering A.C. sheets
Covering sloping roofs
D.P.C.
None to these
Brittleness of cold is due to an excess of
Sulphur
Carbon
Phosphorus
Silicon
A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called
Slate
Plank
Board
Strip
Dorry's testing machine is used for
Crushing test of stone
Hardness test of stone
Impact test of stone
Water absorption test
The percentage of alumina and silica in good fire clay vary respectively is
25, 75
30, 70
35, 65
All of these
The most important constituent of varnish, is
Drier
Solvent
Resin
All the above
The main ingredient of a good quality brick earth, is
Magnesia
Lime
Silica
Alumina
Pick up the correct statement from the following:
Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38%
The bulking of fine sand is more than that of coarse sand
If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing
All the above
The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
1
2
3
4
A ferrous metal is
Cast iron
Wrought iron
Steel
All the above
The cement becomes unsound by the presence of excess
Sulphur
Magnesia
Lime
All of these
Pick up the correct statement from the following:
The baked earth is called terra-cotta
The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware
The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware
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
Softer variety of steel may be obtained by
Cementation process
Crucible process
Bessemer process
Open hearth process
Pick up the non-inflammable plastic from the following:
Cellulose acetate plastics
Polyvinyl chloride plastics
Phenol formaldehyde plastic
Urea formaldehyde plastic
In a rock calcium carbonate predominates. State whether it is:
Siliceous rock
Argillaceous rock
Calcareous rock
None of these
Generally wooden moulds are made from
Ply wood
Shishum wood
Deodar wood
Teak wood
Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
5 kg/mm2
9 kg/mm2
13 kg/mm2
15 kg/mm2
Sea sand used in structures causes
Dampness
Efflorescence
Disintegration
All of these
Refractory bricks resist
High temperature
Chemical action
Dampness
All the above
Pegmatite is a/an
Intrusive igneous rock
Extrusive igneous rock
Sedimentary rock
Metamorphic rock
The base material for distemper, is
Chalk
Lime
Lime putty
Cement wash
The commonly used drying oil for oil paints, is
Olive oil
Linseed oil
Kerosene oil
Acetate of lead
Rocks formed due to alteration of original structure due to heat and excessive pressure are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Early attainment of strength in rapid hardening cement is mainly due to
Gypsum
Finer grinding
Tri-calcium silicate
Tri-calcium aluminate
Stainless steel contains
18% of chromium and 8% nickel
8% of chromium and 18% of nickel
12% of chromium and 36% of nickel
36% of chromium and 12% of nickel
Wrought iron is manufactured from pig iron by
Refining
Pudding
Shingling
All the above