Q.1
Argentite is the principal ore or raw material for
Q.2
Melting point of iron is
Q.3
The basic constituents of Hastelloy are
Q.4
The ultimate tensile strength of low carbon steel by working at a high strain rate will
Q.5
Normalising of steel is done to
Q.6
Hardness of steel depends on
Q.7
The coordination number of a face centered cubic space lattice is
Q.8
The composition of silver solder is
Q.9
The following types of materials are usually the most ductile
Q.10
Nimonic contains __________ percentage of nickel as that of Inconel.
Q.11
Which one of the following metals would work-harden more quickly than the others?
Q.12
Sulphur in pig iron tends to make it
Q.13
In low carbon steels, presence of small quantities of sulphur improves
Q.14
In induction hardening ________ is high.
Q.15
According to Indian standard specifications, SG 400/15 means
Q.16
The alloy, mainly used for corrosion resistance in stainless steels is
Q.17
The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as
Q.18
An alloy of copper, tin and zinc is known as
Q.19
Paramagnetic alpha iron changes to gamma iron at
Q.20
In basic Bessemer process, the furnace is lined with
Q.21
Babbitt metal is a
Q.22
Macrostructure of a material is, generally, examined by
Q.23
Which of the following iron exist between 910°C and 1403°C?
Q.24
Structural steel contains following principal alloying elements
Q.25
The most effective inhibitor of grain growth, when added in small quantities is
Q.26
Monel metal is an alloy of
Q.27
Delta metal is an alloy of
Q.28
If a refractory contains high content of silicon, it means refractory is
Q.29
The bond formed by transferring electrons from one atom to another is called
Q.30
Which of the following constituents of steels is softest and least strong?
Q.31
Which of the following property is desirable in parts subjected to shock and impact loads?
Q.32
Crystal structure of a material is, generally, examined by
Q.33
The crystal structure of brass is
Q.34
The type of space lattice found in gamma-iron is
Q.35
The type of space lattice found in alpha-iron is
Q.36
A specimen of aluminium metal when observed under microscope shows
Q.37
The crystal structure of gamma iron is
Q.38
The metallic structure of mild steel is
Q.39
Pure iron is the structure of
Q.40
Hardness of martensite is about
Q.41
A coarse grained steel
Q.42
Cast iron is manufactured in
Q.43
The molecules in a solid move
Q.44
Which of the following pipes is least corrosion resistant?
Q.45
Points of arrest for iron correspond to
Q.46
The charge is fed into the blast furnace through the
Q.47
Hardness of upper bainite (acicular structure) is about
Q.48
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
Q.49
A reversible change in the atomic structure of steel with corresponding change in the properties is known as
Q.50
Y-alloy contains
0 h : 0 m : 1 s