Q.1
Which of the following mechanical properties of a material is most structure insensitive?
Q.2
An elastic behaviour of materials is expressed in terms of
Q.3
__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.
Q.4
__________ does not contain tin as an alloying material.
Q.5
Which of the following finds the least commercial use?
Q.6
Pick out the wrong statement.
Q.7
An alloy of iron containing 4% carbon is called
Q.8
German silver used for decorative purposes contains maximum percentage of
Q.9
H₂SO₄ (< 50% concentration) is corrosive to
Q.10
Pick out the wrong statement.
Q.11
Mild steel is used for making
Q.12
Monel alloy is
Q.13
Which of the following is an alloy of nickel and copper?
Q.14
Bog iron used for the adsorption of H?S from coke oven gas is
Q.15
Muntz metal is a/an alloys of
Q.16
Caustic soda is transported in __________ lined containers.
Q.17
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
Q.18
A hardened steel essentially contains
Q.19
Diamagnetic materials are magnetised
Q.20
Monel metal is an alloy of
Q.21
The formation of oxide film on a metal due to atmospheric exposure reduces its
Q.22
Addition of tungsten to steel imparts
Q.23
With increase in the carbon percentage in the steel, its
Q.24
Zircalloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium
Q.25
Manganese in steel affects its
Q.26
Which of the following contains maximum percentage of carbon?
Q.27
Which of the following alloys does not contain nickel?
Q.28
Galvanising is generally done on
Q.29
Lead is
Q.30
Lead pipe is
Q.31
Among the tin containing alloys, __________ consumes the maximum amount of tin.
Q.32
Metalloid is
Q.33
Combination of metals and ceramics are called
Q.34
Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?
Q.35
A material is able to retain the deformation permanently by virtue of its
Q.36
Karbate is
Q.37
The phenomenon in which slow extension of material takes place with the time at constant load is called
Q.38
The fermentor used in the production of pencillin (by deep fermentation process) is made of
Q.39
Polymorphism is not exhibited by
Q.40
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of
Q.41
__________ is used for examining the macro-structure of a material.
Q.42
Hydrochloric acid absorber in made of
Q.43
Which of the following is not an alloy of tin?
Q.44
Cermets are __________ materials.
Q.45
Mild steel is
Q.46
Cold work tool steel should have
Q.47
Pick out the wrong statement.
Q.48
Kel-F is a material, which is
Q.49
Hot working of lead is carried out at
Q.50
A chemical change takes place when iron
0 h : 0 m : 1 s