Q.1
Which metal is protected by the layer of its own oxide?
Q.2
Light weight metallic alloy used in aircraft industry is
Q.3
Zinc is not used
Q.4
Cast iron and steel pipes are produced by __________ casting.
Q.5
Super conductors are those substances, which
Q.6
Galvanising (i.e., zinc coating) of steel sheets is done to
Q.7
Nickel is a constituent of
Q.8
Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)?
Q.9
Nickel made/clad equipments are suitable for handling
Q.10
Presence of 0.3 to 0.5% arsenic in copper increases its
Q.11
Amount of energy that a material can absorb before its fracture is a measure of its
Q.12
Residual magnetism in steel for magnets is increased by the addition of
Q.13
Which of the following heat treatment processes is used for softening the hardened material?
Q.14
Stainless steel is not corroded by
Q.15
Which of the following stainless steels is non-magnetic?
Q.16
Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?
Q.17
Steel tower used for the storage of oleum
Q.18
__________ moulding process can not be used for thermoplastic plastics.
Q.19
Carbon tetrachloride can be stored in a storage vessel made of
Q.20
The addition of antimony in tin-based alloys improves its
Q.21
The heat treatment process applied to cold formed steel parts is
Q.22
The softest material just next to talc in the Mho's scale is
Q.23
Slow and progressive deformation of a material with time under constant stress is called
Q.24
Which of the following is not used as the ceramic material in 'cermets'?
Q.25
The most resistant material to alkaline corrosion is
Q.26
Iron alloyed with carbon upto 2% is called
Q.27
A suitable material of construction to use with fuming sulphuric acid is
Q.28
Gas holder of a gobar (cowdung) gas plant is made of
Q.29
100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with
Q.30
Mercury is transported in metal containers made of
Q.31
Mercury is transported in metal containers made of
Q.32
__________ can replace tungsten in high speed steel,
Q.33
Which of the following undergoes granular fracture?
Q.34
Lead alone is not used in storing equipment, because it
Q.35
Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of
Q.36
Mixing vessel used for the chlorination of methane to produce methyl chloride is made of
Q.37
Cast iron has
Q.38
Bush bearings are made of
Q.39
Hydrochloric acid is stored in a__vessel.
Q.40
High speed steel tools retain their hardness upto a temperature of __________ °C.
Q.41
The material of construction of pressure mills used for squeezing out the juice from sugar cane is
Q.42
Cementite is
Q.43
Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making
Q.44
How many atoms are there per unit cell in a body centred cubic lattice system?
Q.45
Caustic soda can be stored in __________ drums.
Q.46
Vessels made of __________ can be used to store dry chlorine.
Q.47
Cast iron has very high
Q.48
Cast iron is
Q.49
Cast iron is having very high
Q.50
Dilute sulphuric acid is transported in __________ pipes.
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