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Hassan
1.Lime mortar is generally made with
A. quick lime
B. fat lime
C. hydraulic lime
D. quick lime
2.Duco paints are
A. plastic paints
B. cellulose paints
C. emulsion paints
D. plastic paints
3.Pick up the correct statement from the following:
A. Melamine is obtained from calcium carbide
B. Formaldehyde is prepared synthetically from methane
C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
D. Melamine is obtained from calcium carbide
4.Steel contains carbon approximately
A. 1.50% to 5.6%
B. 0.05% to 1.75%
C. 0.25%
D. 1.50% to 5.6%
5.Cast iron contains carbon approximately
A. 1.5% to 5.5%
B. 0.05% to 1.75%
C. 0.25%
D. 1.5% to 5.5%
6.Plastic asphalt is
A. used as a water proofing layer over roof
B. a mixture of cement and asphalt
C. a natural asphalt
D. used as a water proofing layer over roof
7.For obtaining vinyl chloride acetate, the method used, is
A. addition polymerization
B. condensation polymerization
C. co-polymerization
D. addition polymerization
8.The yield strength and tensile strength of low carbon steel may be improved by the addition of
A. manganese
B. chromium
C. nickel
D. manganese
9.Bitumen completely dissolves in
A. carbon bisulphide
B. chloroform
C. benzol
D. carbon bisulphide
10.Good quality cement contains higher percentage of
A. Tricalcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tricalcium silicate
11.The PVC doors and windows are preferred as they are
A. rust proof
B. rot proof
C. termile proof
D. rust proof
12.Based on its dry weight, a freshly felled tree may contain water
A. 25%
B. 50%
C. 75%
D. 25%
13.Forge pig may be converted to wrought iron by
A. rolling
B. pudding
C. shingling
D. rolling
14.To give a brilliant finish, the type of varnish used, is
A. water varnish
B. spirit varnish
C. turpentine varnish
D. water varnish
15.The softest rock is
A. marble
B. diamond
C. talc
D. marble
16.Bitumen may be dissolved in
A. carbondioxide
B. water
C. sodium chloride
D. carbondioxide
17.Pick up the correct statement from the following:
A. Rusting is caused due to combined action of air, moisture and carbon dioxide
B. During rusting, first ferrous bicarbonates are formed
C. On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
D. Rusting is caused due to combined action of air, moisture and carbon dioxide
18.Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
A. 5 kg/mm2
B. 9 kg/mm2
C. 13 kg/mm2
D. 5 kg/mm2
19.Asbestos
A. is an excellant insulator for heat and electricity
B. is fire-proof and acid proof
C. has sp. gravity equal to 3.10
D. is an excellant insulator for heat and electricity
20.Mild steel is used for
A. structural works in beams, joints and girders
B. small sized water pipes
C. columns and struts
D. structural works in beams, joints and girders
21.The sequence of refractory materials according to increasing melting points is :
A. Dolomite, Magnesia, Bauxite, Chromite
B. Bauxite, Chromite, Dolomite, Magnesia
C. Magnesia, Bauxite, Dolomite, Chromite.
D. Dolomite, Magnesia, Bauxite, Chromite
22.Veneering means
A. carving out designs on timber planks
B. chemically treating timber planks
C. thick layer of superior wood glued to inferior wood
D. carving out designs on timber planks
23.Laterite is a/an
A. volcanic rock
B. argillaceous rock
C. calcareous rock
D. volcanic rock
24.A stone is rejected if it absorbs water more than
A. 5%
B. 10%
C. 15%
D. 5%
25.The most valuable timber may be obtained from
A. chir
B. shisham
C. sal
D. chir
26.Pick up the correct statement from the following:
A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
B. The edges of a finished wrought iron, are rough due to red shortage
C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
D. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
27.Pick up the compound responsible for early strength of cement from the following:
A. Tetra-calcium alumino-ferrite
B. Tricalcium silicate
C. Tricalcium aluminate
D. Tetra-calcium alumino-ferrite
28.Mastic asphalt is
A. acid resisting material
B. non-corrosive material
C. corrosive material
D. acid resisting material
29.Which one of the following is used for preparing porcelain
A. clay
B. feldspar
C. quartz
D. clay
30.The commonly used base for iron and steel work, is
A. red lead
B. zinc white
C. white lead
D. red lead
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