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Hassan
1.The main constituent of fly-ash, is
A. aluminium oxide
B. silica
C. ferrous oxide
D. aluminium oxide
2.Bitumen in
A. solid state, is called asphalt
B. semi fluid state, is called mineral tar
C. fluid state, is called petroleum
D. solid state, is called asphalt
3.The plastics made from cellulose resin
A. are as clear as glass
B. are tough and strong
C. possess excellent electrical properties
D. are as clear as glass
4.Kaolin is chemically classified as
A. metamorphic rock
B. argillaceous rock
C. calcareous rock
D. metamorphic rock
5.Which one of the following is acid resistant asbestos:
A. actinolite asbestos
B. amosite asbestos
C. anthophylite asbestos
D. actinolite asbestos
6.Due to attack of dry rot, the timber
A. cracks
B. shrinks
C. reduces to powder
D. cracks
7.Brittleness of cold is due to an excess of
A. sulphur
B. carbon
C. phosphorus
D. sulphur
8.For the manufacture of Portland cement, the proportions of raw materials used, are
A. lime 63% ; silica 22% ; other ingredients 15%
B. lime 22% ; silica 63% ; other ingredients 15%
C. silica 40% ; lime 40% ; other ingredients 20%
D. lime 63% ; silica 22% ; other ingredients 15%
9.Asbestos cement
A. is brittle
B. warps due to changes in humidity
C. strength is lowered when saturated by water
D. is brittle
10.Gniess is obtained from
A. igneous rocks
B. metamorphic rocks
C. sedimentary rocks
D. igneous rocks
11.The rocks formed by gradual deposition, are called
A. sedimentary rocks
B. igneous rocks
C. metamorphic rocks
D. sedimentary rocks
12.Galvanising means covering iron with a thin coat of
A. tin
B. zinc
C. glaze
D. tin
13.For preparing porcelains, the clay should be
A. sufficiently pure
B. of high degree of tanacity
C. of good plasticity
D. sufficiently pure
14.Polymerization helps to improve the property of
A. strength
B. rigidity
C. elasticity
D. strength
15.Good quality stones must
A. be durable
B. be free from clay
C. resist action of acids
D. be durable
16.Sewer pipes are made of
A. earthen ware
B. stone ware
C. refractory clay
D. earthen ware
17.Fibre glass
A. retains heat-longer
B. has a higher strength to weight ratio
C. is shock proof and fire retardent
D. retains heat-longer
18.Pick up the correct statement from the following:
A. The theory of formation of concrete is based on the phenomena of formation of voids
B. The bulking of sand is taken into account while volumetric proportioning of the aggregates
C. The dry sand and the sand completely flooded with water, have practically the same volume
D. The theory of formation of concrete is based on the phenomena of formation of voids
19.Pick up the correct statement from the following:
A. In stone arches, the stones are placed with their natural beds radial
B. In cornices, the stones are placed with their natural beds as vertical
C. In stone walls, the stones are placed with their natural beds as horizontal
D. In stone arches, the stones are placed with their natural beds radial
20.The commonly used colour pigment in paints, is
A. ambers
B. carbon black
C. iron oxide
D. ambers
21.Varnish is a transparent or semi-transparent solution of resinuous substances in
A. alcohol
B. linseed
C. turpentine
D. alcohol
22.Initial setting time of cement for asbestos cement products should be not less than
A. 30 minutes
B. 50 minutes
C. 75 minutes
D. 30 minutes
23.The variety of pig iron used for the manufacture of steel by Bessemer process, is
A. Bessemer pig
B. Grey pig
C. White forge pig
D. Bessemer pig
24.For melting one tonne of cast iron
A. 700 m3 air is required
B. 20 kg limestone is required
C. one quintal coke is required
D. 700 m3 air is required
25.For filling cracks in masonry structures, the type of bitumen used, is
A. cut-back bitumen
B. bitumen-emulsion
C. blown bitumen
D. cut-back bitumen
26.Plastic
A. is an organic substance
B. consists of natural or synthetic binders
C. finished products are rigid and stable at normal temperature
D. is an organic substance
27.Vanadium steel is generally used for
A. railway switches and crossing
B. bearing balls
C. magnets
D. railway switches and crossing
28.Pick up the correct statement from the following:
A. In basic Bessemer process, the steel heats the converter
B. In open-hearth process, the furnace heats the steel
C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
D. In basic Bessemer process, the steel heats the converter
29.The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A. Cementation process
B. Crucible process
C. Bessemer process
D. Cementation process
30.The commonly used drying oil for oil paints, is
A. olive oil
B. linseed oil
C. kerosine oil
D. olive oil
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