Q.1
Anodic material used for the cathodic protection of underground buried steel pipeline is
Q.2
Chromel (Nichrome) is an alloy of
Q.3
The specific gravity of coal depends mainly on its __________ content.
Q.4
In a plate type heat exchanger, heat transfer plates are never made of
Q.5
Cast iron vessels are not suitable for the storage of
Q.6
Centrifugal pump made of pyrex or glass can't be used to pump
Q.7
Babbit metal used for making bearings should have
Q.8
For platinum thermocouples, lead wires are made of
Q.9
Presence of high phosphorous in cast iron increases its
Q.10
Which of the following is not shipped in mild steel containers?
Q.11
The metals occuring at the lower most position in the electromotive series
Q.12
Atmospheric corrosion of metals result from their
Q.13
Condenser tubes are not made of
Q.14
Platinum and silver are corroded by
Q.15
For storing water and acid free benzol, use a __________ vessel.
Q.16
A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.
Q.17
Hydrocyanic acid is not shipped in
Q.18
The carbonating tower used in Solvay process of soda ash manufacture is made of
Q.19
Tank furnace used for melting of glass is made of
Q.20
Creep is not exhibited at low temperature by
Q.21
Silicon percentage in iron castings to have maximum hardness should be about
Q.22
Which of the following is the most prone to atmospheric corrosion?
Q.23
Which of the following is the hardest material?
Q.24
Which of the following is the softest material?
Q.25
Hammers and railway rails are normally made of
Q.26
Post weld heat treatment is done by
Q.27
The material of construction of bearings is
Q.28
Metal at the top of the electromotive series is
Q.29
Heavy duty bearings are usually made of
Q.30
Rotary driers are generally made of
Q.31
Wood is corroded by
Q.32
Work hardening of a material
Q.33
Wrought iron is
Q.34
When iron is rusted, it is
Q.35
White cast iron is not
Q.36
White metal is an alloy of
Q.37
Urea autoclave is made of
Q.38
For spinning viscose rayon, the extrusion spinnerettes are made of
Q.39
Generally __________ are subjected to galvanising (i.e., zinc coating).
Q.40
__________ steel is widely used for the manufacture of motor car crankshafts.
Q.41
Fatigue failure of a material may occur, when it is subjected to __________ stress.
Q.42
Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
Q.43
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?
Q.44
Which one has the maximum tensile strength out of the following?
Q.45
Dielectric strength of a material is
Q.46
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of
Q.47
Which of the following is the hardest?
Q.48
A metallic alloy in general as compared to their pure metal components is
Q.49
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
Q.50
Titanium metal
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