Based on its dry weight, a freshly felled tree may contain water
1.25%
2.50%
3.75%
4.100%
Posted Date:-2021-03-26 07:40:44
For light and ornamental casting, the most unsuitable pig iron, is
1.Bessemer pig
2.Grey or foundry pig
3.White or forge pig
4.Mottled pig.
Posted Date:-2021-03-26 07:40:44
For lime concrete,
1.slump is 50 to 75 mm
2.flexural strength at 90 days is 0.2 N/mm2
3.flexural strength at 90 days is 0.2 N/mm2
4.all the above.
Posted Date:-2021-03-26 07:40:44
For obtaining vinyl chloride acetate, the method used, is
1. addition polymerization
2.condensation polymerization
3.co-polymerization
4.none of these.
Posted Date:-2021-03-26 07:40:44
Laterite is found in
1.U.P.
2.Punjab
3.West Bengal
4.Kerala.
Posted Date:-2021-03-26 07:40:44
Asbestos
1. is an excellant insulator for heat and electricity
2. is fire-proof and acid proof
3.has sp. gravity equal to 3.10
4.All the above.
Posted Date:-2021-03-26 07:40:44
Bitumen completely dissolves in
1. carbon bisulphide
2.chloroform
3.benzol
4.All of these.
Posted Date:-2021-03-26 07:40:44
Bitumen may be dissolved in
1.carbondioxide
2. sodium chloride
3.water
4.carbon disulphide
Posted Date:-2021-03-26 07:40:44
Good quality cement contains higher percentage of
1.Tricalcium silicate
2.Di-calcium silicate
3.Tri-calcium aluminate
4.Tetra calcium alumino ferrite
Posted Date:-2021-03-26 07:40:44
Lacquer is
1.oil paint
2.distemper
3. spirit varnish
4.none to these.
Posted Date:-2021-03-26 07:40:44
Mastic asphalt is
1.acid resisting material
2.non-corrosive material
3.corrosive material
4. heating-resisting material.
Posted Date:-2021-03-26 07:40:44
Mild steel is used for
1. structural works in beams, joints and girders
2. structural works in beams, joints and girders
3.columns and struts
4.none of these.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
2.Cracked paints may be cured by removing paint and giving a fresh coat of paint
3. Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the non-inflammable plastic from the following:
1.Cellulose acetate plastics
2. Polyvinyl chloride plastics
3.Phenol formaldehyde plastic
4.Urea formaldehyde plastic.
Posted Date:-2021-03-26 07:40:44
Soundness of cement is tested by
1.Vicat's apparatus
2.Le-chatelier apparatus
3. compressive strength testing apparatus
4.none of the these.
Posted Date:-2021-03-26 07:40:44
The PVC doors and windows are preferred as they are
1.rust proof
2.rot proof
3.termile proof
4. all of these.
Posted Date:-2021-03-26 07:40:44
The yield strength and tensile strength of low carbon steel may be improved by the addition of
1.manganese
2.chromium
3.nickel
4.venadium
Posted Date:-2021-03-26 07:40:44
To give a brilliant finish, the type of varnish used, is
1.water varnish
2.spirit varnish
3.spirit varnish
4. oil varnish
Posted Date:-2021-03-26 07:40:44
Which one of the following is used for preparing porcelain
1.clay
2.feldspar
3.quartz
4.All of these.
Posted Date:-2021-03-26 07:40:44
Acrylic is the name of
1.cellulose resin
2.alkyd resin
3. methyl metha crylate
4.cumarone-indene.
Posted Date:-2021-03-26 07:40:44
Cast iron contains carbon approximately
1. 1.5% to 5.5%
2.0.05% to 1.75%
3.0.25%
4.none to these.
Posted Date:-2021-03-26 07:40:44
Duco paints are
1.plastic paints
2. cellulose paints
3.emulsion paints
4.oil paints.
Posted Date:-2021-03-26 07:40:44
Forge pig may be converted to wrought iron by
1.rolling
2.pudding
3.shingling
4.refining.
Posted Date:-2021-03-26 07:40:44
Glazing of clay products, is done
1.to improve their appearance
2.to protect them from atmospheric effect
3.to protect them from corrosive action
4.all the above.
Posted Date:-2021-03-26 07:40:44
Laterite is a/an
1.volcanic rock
2.argillaceous rock
3.calcareous rock
4.calcareous rock
Posted Date:-2021-03-26 07:40:44
Lime mortar is generally made with
1.quick lime
2.fat lime
3.hydraulic lime
4.plain lime
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.The percentage of absorption for firebricks varies from 5 to 10
2.The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
3.Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Roasting is not necessary if iron ore is an oxide
2.Impurities float on the molten iron as slag
3.The slag contains lime about 45%
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Melamine is obtained from calcium carbide
2.Formaldehyde is prepared synthetically from methane
3.The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Bull's trench kiln a trench excavated in ground
2.Hoffman's kiln is constructed overground
3.Tunnel Kiln is constructed as a tunnel
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Rusting is caused due to combined action of air, moisture and carbon dioxide
2.During rusting, first ferrous bicarbonates are formed
3.On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pick up the correct statement from the following:
1.Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
2.The edges of a finished wrought iron, are rough due to red shortage
3.Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
4.All the above.
Posted Date:-2021-03-26 07:40:44
Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
1.Tetra-calcium alumino-ferrite
2.Tricalcium silicate
3.Tricalcium silicate
4.Dicalcium silicate.
Posted Date:-2021-03-26 07:40:44
Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as
1.Bessemer pig
2.Bessemer pig
3.White or forge pig
4. Mottled pig
Posted Date:-2021-03-26 07:40:44
Plastic asphalt is
1.used as a water proofing layer over roof
2. a mixture of cement and asphalt
3. a mixture of cement and asphalt
4.a refinery product.
Posted Date:-2021-03-26 07:40:44
Seasoning of timber is essential to remove
1.knots from timber
2.sap from timber
3. twisted fibre from timber
4.roughness of timber.
Posted Date:-2021-03-26 07:40:44
Spirit varnish generally consists of
1.oil, wax and resin
2.alcohol, wax and turpentine
3.pigment and synthetic resin
4.spirit and shellac
Posted Date:-2021-03-26 07:40:44
Steel contains carbon approximately
1.1.50% to 5.6%
2.0.05% to 1.75%
3.0.25%
4.none to these.
Posted Date:-2021-03-26 07:40:44
The commonly used base for iron and steel work, is
1.red lead
2. zinc white
3.white lead
4.titanium white.
Posted Date:-2021-03-26 07:40:44
The material generally not used as extender in paints, is
1.Powdered silica
2.gypsum
3.talc
4.zinc white.
Posted Date:-2021-03-26 07:40:44
The melting point of silica is :
1.1570°C
2.1630°C
3.1730°C
4.1850°C.
Posted Date:-2021-03-26 07:40:44
The most commonly used synthetic abrasive is
1.aluminium carbide
2.boric acid
3.silicon
4.All of these.
Posted Date:-2021-03-26 07:40:44
The most valuable timber may be obtained from
1.chir
2.shisham
3.sal
4.teak.
Posted Date:-2021-03-26 07:40:44
The sequence of refractory materials according to increasing melting points is :
1.Dolomite, Magnesia, Bauxite, Chromite
2. Bauxite, Chromite, Dolomite, Magnesia
3.Magnesia, Bauxite, Dolomite, Chromite.
4.All of above.
Posted Date:-2021-03-26 07:40:44
The softest rock is
1.marble
2.diamond
3.talc
4.quartz.
Posted Date:-2021-03-26 07:40:44
The tendency of a stone is, to split along:
1.texture
2.fracture
3.cleavage
4.structure
Posted Date:-2021-03-26 07:40:44
Upto a maximum of 72% of iron, is available in
1.Magnetite
2.Red haemetite
3.Limonite
4.Siderite
Posted Date:-2021-03-26 07:40:44
Veneering means
1.carving out designs on timber planks
2.chemically treating timber planks
3. thick layer of superior wood glued to inferior wood
4. thin layer of superior wood glued to inferior wood.
Posted Date:-2021-03-26 07:40:44
Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
1.5 kg/mm2
2.9 kg/mm2
3.13 kg/mm2
4.15 kg/mm2
Posted Date:-2021-03-26 07:40:44