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Home » Engineering » Civil Engineering » Aptitude Test - 33
1.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
2.Mastic asphalt is
A. acid resisting material
B. non-corrosive material
C. corrosive material
D. acid resisting material
3.Which one of the following is used for preparing porcelain
A. clay
B. feldspar
C. quartz
D. clay
4.The commonly used base for iron and steel work, is
A. red lead
B. zinc white
C. white lead
D. red lead
5.Laterite is found in
A. U.P.
B. Punjab
C. West Bengal
D. U.P.
6.Lacquer is
A. oil paint
B. distemper
C. spirit varnish
D. oil paint
7.Upto a maximum of 72% of iron, is available in
A. Magnetite
B. Red haemetite
C. Limonite
D. Magnetite
8.For lime concrete,
A. slump is 50 to 75 mm
B. flexural strength at 90 days is 0.2 N/mm2
C. compressive strength at 90 days is 1.5 N/mm2
D. slump is 50 to 75 mm
9.Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Bessemer pig
10.Pick up the correct statement from the following:
A. Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
B. Cracked paints may be cured by removing paint and giving a fresh coat of paint
C. Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
D. Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
11.The material generally not used as extender in paints, is
A. powdered silica
B. gypsum
C. talc
D. powdered silica
12.Pick up the non-inflammable plastic from the following:
A. Cellulose acetate plastics
B. Polyvinyl chloride plastics
C. Phenol formaldehyde plastic
D. Cellulose acetate plastics
13.The most commonly used synthetic abrasive is
A. aluminium carbide
B. boric acid
C. silicon
D. aluminium carbide
14.For light and ornamental casting, the most unsuitable pig iron, is
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Bessemer pig
15.Seasoning of timber is essential to remove
A. knots from timber
B. sap from timber
C. twisted fibre from timber
D. knots from timber
16.The melting point of silica is :
A. 1570�C
B. 1630�C
C. 1730�C
D. 1570�C
17.A bull nose brick is not used for
A. rounding off sharp corners
B. pillars
C. decoration purpose
D. rounding off sharp corners
18.Red short iron cracks when bent due to the presence of
A. sulphur
B. carbon
C. phosphorus
D. sulphur
19.Linseed oil is used in paints as
A. thinner
B. vehicle
C. base
D. thinner
20.Plaster of Paris is obtained by calcining
A. bauxite
B. gypsum
C. kankar
D. bauxite
21.For high grade instruments the steel preferred to, is
A. cast steel
B. bessemer steel
C. mild steel
D. cast steel
22.If the ore impurities is
A. clay, lime stone is used as flux
B. lime stone, clay is used as flux
C. quartz, lime stone and argallaceous iron ores are used as flux
D. clay, lime stone is used as flux
23.The plastics prepared from Vinyl resin are
A. odourless
B. non-toxic
C. transparent
D. odourless
24.Chlorite, a green colour mineral is mainly derived from the decomposition of
A. augite
B. biotite
C. horn blende
D. augite
25.During smelting process, the combination of fuel in the furnace
A. forms carbon dioxide
B. carbon dioxide with carbon forms carbon mono-oxide
C. carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
D. forms carbon dioxide
26.Lime stones are generally known as
A. aqueous rocks
B. sedimentary rocks
C. stratified rocks
D. aqueous rocks
27.The method of addition polymerization is used for obtaining:
A. polythylene
B. polypropylene
C. polyvinylchloride
D. polythylene
28.Pick up the correct statement from the following:
A. The lime in excess makes the cement unsound and causes the cement to expand and disintegrate
B. The silica in excess makes the cement stronger but its setting time also increases
C. The excess amount of alumina weakens the cement
D. The lime in excess makes the cement unsound and causes the cement to expand and disintegrate
29.A rock contains only one mineral. It is called
A. homogeneous
B. non-homogeneous
C. monomineralic
D. homogeneous
30.Asbestos
A. is a natural fibrous mineral substance
B. is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
C. contains iron oxide and alumina
D. is a natural fibrous mineral substance
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