Q.1
In process annealing, the hypo eutectoid steel is
Q.2
Bronze is an alloy of
Q.3
In a hardening process, the hypo-eutectoid steel is
Q.4
The temperature required for full annealing in hypereutectoid steel is
Q.5
Manganese is added in low carbon steel to
Q.6
The percentage of carbon in low carbon steel is
Q.7
Admiralty gun metal contains
Q.8
Addition of silicon to aluminium results in
Q.9
The hardness of steel primarily depends on
Q.10
The elastic stress strain behavior of rubber is
Q.11
The following element can't impart high strength at elevated temperature
Q.12
Beryllium bronze contains
Q.13
Aluminium bronze contains
Q.14
The machinability of steel is improved by adding
Q.15
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will
Q.16
Nodular cast iron is produced by adding ________ to the molten cast iron.
Q.17
Addition of manganese to aluminium results in
Q.18
Addition of copper to aluminium results in
Q.19
Addition of lead and bismuth to aluminium results in
Q.20
In mottled cast iron, carbon is available in
Q.21
The presence of hydrogen in steel causes
Q.22
Maximum percentage of carbon in austenite is
Q.23
Iron ore is usually found in the form of
Q.24
The hardness and tensile strength in austenitic stainless steel can be increased by
Q.25
Machining properties of steel are improved by adding
Q.26
German silver contains
Q.27
Drop forging dies contain carbon of the order of
Q.28
The main alloying elements high speed steel in order of increasing proportion are
Q.29
Combined carbon in iron makes the metal
Q.30
Free carbon in iron makes the metal
Q.31
Induction hardening is basically a
Q.32
Which of the following is not the correct method of increasing fatigue limit?
Q.33
In grey cast iron, carbon is present in the form of
Q.34
The property of a material which enables it to retain the deformation permanently, is called
Q.35
In malleable iron, carbon is present in the form of
Q.36
Which of the following property is desirable for materials used in tools and machines?
Q.37
The brown smoke during the operation of a Bessemer converter indicates that the
Q.38
Nodular iron has
Q.39
Nickel in steel
Q.40
Mild steel belongs to the following category
Q.41
The usual composition of a soldering alloy is
Q.42
The metal suitable for bearings subjected to light loads, is
Q.43
The metal suitable for bearings subjected to heavy loads, is
Q.44
Silicon when added to copper improves
Q.45
The property of a material due to which it breaks with little permanent distortion, is called
Q.46
Super conduction by metals is observed in the temperature range of
Q.47
Ferromagnetic alpha iron exists in temperature range of
Q.48
Dislocations in materials refer to the following type of defect
Q.49
Nickel when added to copper improves
Q.50
For the allotropic forms of iron, the points of arrest are
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