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Home » Engineering » Aptitude Test - 111
Hassan
1.Pick�out�the�wrong�statement?
A. Tin can be readily and very easily drawn into very fine wire
B. Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature
C. Tin exists in two allotropic forms
D. Tin can be readily and very easily drawn into very fine wire
2.Pick�out�the�wrong�statement?
A. Bronze is an alloy of copper & tin
B. Brass is an alloy of copper & zinc
C. The alloy named �German silver� does not contain any silver
D. Bronze is an alloy of copper & tin
3.The range of Mho�s scale of hardness is from ?
A. 1 to 15
B. 1 to 8
C. 1 to10
D. 1 to 15
4.possesses viscoelastic properties?
A. Cork
B. Glass
C. Graphite
D. Cork
5.Aluminium storage vessel can be used to store_?
A. Aqua regia
B. Ferrous sulphate
C. Hydrochloric acid (10%)
D. Aqua regia
6.Which of the following alloys does not contain nickel ?
A. Chlorinet � 2 alloy
B. Monel
C. Babbitt metal
D. Chlorinet � 2 alloy
7.Carbon percentage in medium carbon steel is around__?
A. 0.1 to 0.35
B. 0.35 to 0.5
C. 0.8 to 1.4
D. 0.1 to 0.35
8.Which of the following heat treatment processes is used for softening the hardened material ?
A. Normalising
B. Tempering
C. Annealing
D. Normalising
9.Interchain forces are the weakest in case of__?
A. Plastics
B. Fibres
C. Elastomers
D. Plastics
10.______ is never shipped in glass carboys?
A. Ammonia
B. Acetic acid
C. Phenol
D. Ammonia
11.Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)_?
A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Do not require heat treatment for any of its applications
12.The fermenter used for the production of ethyl alcohol from molasses is made of____?
A. Wood
B. Concrete
C. Copper bearing steel
D. Wood
13.Mercury is transported in metal containers made of___?
A. Aluminium
B. Iron
C. Lead
D. Aluminium
14.Lead__?
A. Is the hardest metal in common use
B. Is the lightest metal in common use
C. Cannot be scratched by finger nails
D. Is the hardest metal in common use
15.Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40�C ?
A. Silicone rubber, teflon, porcelain and wood
B. Nickel, monel, stainless steel and graphite
C. Aluminium, copper, high silicon iron
D. Silicone rubber, teflon, porcelain and wood
16.The softest material just next to talc in the Mhos scale is____?
A. Quartz
B. Gypsum
C. Feldspar
D. Quartz
17.In drop forging process, the forging is done by dropping the _____ at high velocity?
A. Hammer
B. Workpiece
C. Die with hammer
D. Hammer
18.Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of__?
A. Concrete
B. Steel
C. Zircaloy
D. Concrete
19.The preferred material of construction for storage tanks for 98% sulphuric acid is___?
A. Aluminium
B. Lead
C. Stainless steel 316
D. Aluminium
20.Which of the following has the least carbon percentage ?
A. Low carbon steel
B. Mild steel
C. Wrought iron
D. Low carbon steel
21.Locomotive boiler tubes are made of ______ alloys?
A. Arsenic copper
B. Magnesium
C. Aluminium
D. Arsenic copper
22.Wood is corroded by____?
A. Hydrochloric acid
B. SO2 (dry or wet)
C. Chlorine (dry or wet)
D. Hydrochloric acid
23.Pipes for bi-cycle frames are made of ___ steel?
A. Hot rolled
B. Chrome carbon
C. Cold rolled
D. Hot rolled
24.Fatigue strength of a material increases by__?
A. Having notches in the specimen
B. Rise in temperature
C. Under stressing the specimen
D. Having notches in the specimen
25.An elastic behaviour of materials is expressed in terms of___?
A. Hysteresis loop area
B. Stress-strain curve
C. Relaxation time
D. Hysteresis loop area
26.The formation of oxide film on a metal due to atmospheric exposure reduces its_?
A. Toughness
B. Stiffness
C. Creep limit
D. Toughness
27.Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100�C ?
A. Monel
B. Stainless steel
C. Graphite
D. Monel
28.Most suitable material of construction for the storage of concentrated nitric acid is__?
A. Cast iron
B. Monel
C. Karbate
D. Cast iron
29.A suitable material of construction to use with fuming sulphuric acid is___?
A. Carbon steel
B. Stainless steel type 304
C. Nickel
D. Carbon steel
30.Steel tower used for the storage of oleum___?
A. Is lined with lead
B. Need not be lined
C. Is lined with rubber
D. Is lined with lead
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