Which of the following heat treatment processes is used for softening the hardened material?
Which of the following heat treatment processes is used for softening the hardened material?
Which of the following contains maximum percentage of carbon?
Which of the following contains maximum percentage of carbon?
Maximum carbon content in cast iron is __________ percent.
Maximum carbon content in cast iron is __________ percent.
Carbon content in plain carbon steel is __________ percent.
Carbon content in plain carbon steel is __________ percent.
Which of the following stainless steels is non-magnetic?
Which of the following stainless steels is non-magnetic?
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?
A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds.
A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds.
As the impurities are oxidised, the melting point of iron
As the impurities are oxidised, the melting point of iron
Pick out the wrong statement.
Pick out the wrong statement.
Sulphur melting pit in the sulphuric acid plant is made of
Sulphur melting pit in the sulphuric acid plant is made of
Phenol is not shipped in
Phenol is not shipped in
Tin vessels are corroded by
Tin vessels are corroded by
Steel rods are used in reinforced concrete to increase its __________ strength.
Steel rods are used in reinforced concrete to increase its __________ strength.
The material of construction of bearings is
The material of construction of bearings is
Material of construction of pipe generally used for conveying water in India is
Material of construction of pipe generally used for conveying water in India is
The hardest material just prior to diamond in Mho's scale is
The hardest material just prior to diamond in Mho's scale is
Spark plugs are made of
Spark plugs are made of
Cermets are __________ materials.
Cermets are __________ materials.
Which of the following is the hardest?
Which of the following is the hardest?
Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system?
Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system?
Which of the following is not an alloy of copper?
Which of the following is not an alloy of copper?
Corrosion resistance of steel is increased by the addition of
Corrosion resistance of steel is increased by the addition of
The process of coating steel sheets by zinc to improve its corrosion resistance is called
The process of coating steel sheets by zinc to improve its corrosion resistance is called
For platinum thermocouples, lead wires are made of
For platinum thermocouples, lead wires are made of
Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.
Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.
Pick out the wrong statement.
Pick out the wrong statement.
Liquid ammonia is shipped in __________ containers.
Liquid ammonia is shipped in __________ containers.
Constantan used in thermocouples is an alloy of
Constantan used in thermocouples is an alloy of
Maximum consumption of copper is in
Maximum consumption of copper is in
Tin coating is not done by
Tin coating is not done by
With increase in the carbon percentage in the steel, its
With increase in the carbon percentage in the steel, its
Cast iron vessels are not suitable for the storage of
Cast iron vessels are not suitable for the storage of
Evaporator used for concentrating tomato juice is made of
Evaporator used for concentrating tomato juice is made of
Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
When iron is rusted, it is
When iron is rusted, it is
A metallic alloy in general as compared to their pure metal components is
A metallic alloy in general as compared to their pure metal components is
Galvanising is generally done on
Galvanising is generally done on
Softness of silver can be converted into hardness by alloying it with small quantity of
Softness of silver can be converted into hardness by alloying it with small quantity of
In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of
In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of
Which of the following is the hardest material?
Which of the following is the hardest material?
Which of the following finds the least commercial use?
Which of the following finds the least commercial use?
Manganese in steel affects its
Manganese in steel affects its
The ability of a material to absorb energy in the elastic range is a measure of its
The ability of a material to absorb energy in the elastic range is a measure of its
Heavy duty bearings are usually made of
Heavy duty bearings are usually made of
Ceramic recuperators are generally made of
Ceramic recuperators are generally made of
Amount of energy that a material can absorb before its fracture is a measure of its
Amount of energy that a material can absorb before its fracture is a measure of its
Corrosion involves exchange of electrons in __________ corrosion.
Corrosion involves exchange of electrons in __________ corrosion.
Which of the following is the easiest to bend?
Which of the following is the easiest to bend?
Hydrochloric acid absorber in made of
Hydrochloric acid absorber in made of
Galvanising (i.e., zinc coating) of steel sheets is done to
Galvanising (i.e., zinc coating) of steel sheets is done to
Which of the following is a low melting point metal?
Which of the following is a low melting point metal?
High degree of toughness is a must for
High degree of toughness is a must for
Mild steel storage vessels are suitable for the storage of
Mild steel storage vessels are suitable for the storage of
Soap kettle used in the production of laundry soap is made of
Soap kettle used in the production of laundry soap is made of
Reactor used in the production of polyvinyl chloride (PVC) is made of
Reactor used in the production of polyvinyl chloride (PVC) is made of
Mild steel is a/an __________ steel.
Mild steel is a/an __________ steel.
Lead pipe is
Lead pipe is
Titanium metal
Titanium metal
Which of the following alloying elements is present in maximum percentage in high speed steel.
Which of the following alloying elements is present in maximum percentage in high speed steel.
Which of the following is the most elastic material?
Which of the following is the most elastic material?
White metal is an alloy of
White metal is an alloy of
Water gas generator is made of
Water gas generator is made of
Materials having __________ lattice structure are usually most ductile.
Materials having __________ lattice structure are usually most ductile.
Metalloid is
Metalloid is
Presence of silicon in steel
Presence of silicon in steel
Cast iron detachable joint is used in __________ pipes.
Cast iron detachable joint is used in __________ pipes.
Electronic structure of a material is generally studied by
Electronic structure of a material is generally studied by
Wrought iron is
Wrought iron is
Centrifugal pump made of pyrex or glass can't be used to pump
Centrifugal pump made of pyrex or glass can't be used to pump
Which of the following is an alloy of nickel and copper?
Which of the following is an alloy of nickel and copper?
Iron rust is
Iron rust is
Zircalloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium
Zircalloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium
Light weight metallic alloy used in aircraft industry is
Light weight metallic alloy used in aircraft industry is
Brass container is suitable for storing
Brass container is suitable for storing
Pick out the wrong statement.
Pick out the wrong statement.
Bronze is an alloy of copper and
Bronze is an alloy of copper and
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
Post weld heat treatment is done by
Post weld heat treatment is done by
The formation of oxide film on a metal due to atmospheric exposure reduces its
The formation of oxide film on a metal due to atmospheric exposure reduces its
Babbit metal used for making bearings should have
Babbit metal used for making bearings should have
Generally __________ are subjected to galvanising (i.e., zinc coating).
Generally __________ are subjected to galvanising (i.e., zinc coating).
Work hardening of a material
Work hardening of a material
A hardened steel essentially contains
A hardened steel essentially contains
The metals occuring at the lower most position in the electromotive series
The metals occuring at the lower most position in the electromotive series
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
Aqueous nitric acid is stored in
Aqueous nitric acid is stored in
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of
Perspex is nothing but
Perspex is nothing but
Molybdenum steels containing 0.15 to 0.40% molybdenum
Molybdenum steels containing 0.15 to 0.40% molybdenum
Thermosetting resins are those polymers, which
Thermosetting resins are those polymers, which
The softest material just next to talc in the Mhos scale is
The softest material just next to talc in the Mhos scale is
A material is able to retain the deformation permanently by virtue of its
A material is able to retain the deformation permanently by virtue of its
Pick out the wrong statement.
Pick out the wrong statement.
Monel metal is an alloy of
Monel metal is an alloy of
Presence of 0.3 to 0.5% arsenic in copper increases its
Presence of 0.3 to 0.5% arsenic in copper increases its
Which of the following is not an alloy of tin?
Which of the following is not an alloy of tin?
Lead lined equipments & vessels are suitable for handling
Lead lined equipments & vessels are suitable for handling
The fermentor used in the production of pencillin (by deep fermentation process) is made of
The fermentor used in the production of pencillin (by deep fermentation process) is made of
Rotary driers are generally made of
Rotary driers are generally made of
Plastics are
Plastics are
Mild steel is
Mild steel is
When the steel is subjected to normalising, its __________ decreases.
When the steel is subjected to normalising, its __________ decreases.
A chemical change takes place when iron
A chemical change takes place when iron
Stainless steel is not corroded by
Stainless steel is not corroded by
Slow plastic deformation of metals under a constant stress is termed as __________ failure.
Slow plastic deformation of metals under a constant stress is termed as __________ failure.
Platinum and silver are corroded by
Platinum and silver are corroded by
In a plate type heat exchanger, heat transfer plates are never made of
In a plate type heat exchanger, heat transfer plates are never made of
Hardening of steel is not possible unless it is heated __________ critical point.
Hardening of steel is not possible unless it is heated __________ critical point.
Maximum permissible sulphur content in steel is __________ percent.
Maximum permissible sulphur content in steel is __________ percent.
Which of the following commercial metals is most abundantly found in India?
Which of the following commercial metals is most abundantly found in India?
Urea autoclave is made of
Urea autoclave is made of
Ability of a material to absorb energy in deformation in the plastic range is characterised as its
Ability of a material to absorb energy in deformation in the plastic range is characterised as its
Wood is corroded by
Wood is corroded by
The phenomenon in which slow extension of material takes place with the time at constant load is called
The phenomenon in which slow extension of material takes place with the time at constant load is called
Creep is not exhibited at low temperature by
Creep is not exhibited at low temperature by
Among the tin containing alloys, __________ consumes the maximum amount of tin.
Among the tin containing alloys, __________ consumes the maximum amount of tin.
Glass lined vessels are not used for handling
Glass lined vessels are not used for handling
Which of the following is not shipped in mild steel containers?
Which of the following is not shipped in mild steel containers?
Zinc is not used
Zinc is not used
__________ does not contain tin as an alloying material.
__________ does not contain tin as an alloying material.
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
Thermosetting polymers are
Thermosetting polymers are
Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its
Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about
Carbon is present in steel wholly in the
Carbon is present in steel wholly in the
Which of the following mechanical properties of a material is most structure insensitive?
Which of the following mechanical properties of a material is most structure insensitive?
Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower
Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower
Which of the following is the most prone to atmospheric corrosion?
Which of the following is the most prone to atmospheric corrosion?
Muntz metal is a/an alloys of
Muntz metal is a/an alloys of
Silicon percentage in iron castings to have maximum hardness should be about
Silicon percentage in iron castings to have maximum hardness should be about
Bog iron used for the adsorption of H?S from coke oven gas is
Bog iron used for the adsorption of H?S from coke oven gas is
Nickel (76%) and chromium (15%) alloys are termed as
Nickel (76%) and chromium (15%) alloys are termed as
Inconel is an alloy of
Inconel is an alloy of
The presence of impurities in iron
The presence of impurities in iron
Nickel is a constituent of
Nickel is a constituent of
Tempering of steel is done to make it
Tempering of steel is done to make it
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
Presence of manganese in alloy steel improves its
Presence of manganese in alloy steel improves its
Maximum consumption of zinc is in
Maximum consumption of zinc is in
Super conductors are those substances, which
Super conductors are those substances, which
Metal at the top of the electromotive series is
Metal at the top of the electromotive series is
The carbonating tower used in Solvay process of soda ash manufacture is made of
The carbonating tower used in Solvay process of soda ash manufacture is made of
Anodic material used for the cathodic protection of underground buried steel pipeline is
Anodic material used for the cathodic protection of underground buried steel pipeline is
Which of the following is not a copper based alloy with nickel?
Which of the following is not a copper based alloy with nickel?
The softest material in Mho's scale (for measuring hardness) is
The softest material in Mho's scale (for measuring hardness) is
Telfon (PTFE) is corroded by
Telfon (PTFE) is corroded by
Babbit metals used for making bearings are
Babbit metals used for making bearings are
Diamagnetic materials are magnetised
Diamagnetic materials are magnetised
Wrought iron is having very high
Wrought iron is having very high
Tin in its pure form is used for making
Tin in its pure form is used for making
Hydrocyanic acid is not shipped in
Hydrocyanic acid is not shipped in
'Hypersil' is a __________ steel.
'Hypersil' is a __________ steel.
Dielectric strength of a material is
Dielectric strength of a material is
Vycor, a widely used material for making 'thermal wells' in temperature measurement, is a
Vycor, a widely used material for making 'thermal wells' in temperature measurement, is a
__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.
__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.
Mild steel is used for making
Mild steel is used for making
Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)
Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)
Invar used in thermocouples is an alloy of nickel and
Invar used in thermocouples is an alloy of nickel and
__________ alloys have the highest specific strength of all the structural materials out of the following.
__________ alloys have the highest specific strength of all the structural materials out of the following.
Ferric stainless steels compared to austenitic stainless steels
Ferric stainless steels compared to austenitic stainless steels
Carbon content in steel is __________ percent.
Carbon content in steel is __________ percent.
Visco-elastic behaviour of materials which is time dependent is common in
Visco-elastic behaviour of materials which is time dependent is common in
Which one is remelted and poured into moulds to get cast iron?
Which one is remelted and poured into moulds to get cast iron?
Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
Chromel (Nichrome) is an alloy of
Chromel (Nichrome) is an alloy of
The main constituent of carborundum is __________ carbide.
The main constituent of carborundum is __________ carbide.
Which metal is protected by the layer of its own oxide?
Which metal is protected by the layer of its own oxide?
Hastelloy C is a good material of construction in chemical process industry, since it is
Hastelloy C is a good material of construction in chemical process industry, since it is
Concrete tank can be used to store
Concrete tank can be used to store
All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain
All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain
Hot working of lead is carried out at
Hot working of lead is carried out at
A measure of toughness of a material is its
A measure of toughness of a material is its
Addition of tungsten to steel imparts
Addition of tungsten to steel imparts
White cast iron is not
White cast iron is not
Pure nickel is
Pure nickel is
Kel-F is a material, which is
Kel-F is a material, which is
__________ steel is widely used for the manufacture of motor car crankshafts.
__________ steel is widely used for the manufacture of motor car crankshafts.
Presence of high phosphorous in cast iron increases its
Presence of high phosphorous in cast iron increases its
Specify the material of construction suitable for handling concentrated HNO₃ at 100°C.
Specify the material of construction suitable for handling concentrated HNO₃ at 100°C.
Pick out the wrong statement.
Pick out the wrong statement.
Cast iron is a __________ material.
Cast iron is a __________ material.
Condenser tubes are not made of
Condenser tubes are not made of
Atmospheric corrosion of metals result from their
Atmospheric corrosion of metals result from their
Tank furnace used for melting of glass is made of
Tank furnace used for melting of glass is made of
Molten phthalic anhydride is stored in a/an __________ vessel.
Molten phthalic anhydride is stored in a/an __________ vessel.
Carbon is present in the combined form (carbide) in case of
Carbon is present in the combined form (carbide) in case of
Caustic soda is transported in __________ lined containers.
Caustic soda is transported in __________ lined containers.
Out of the following, copper vessels are the most suitable for the storage of
Out of the following, copper vessels are the most suitable for the storage of
Acetaldehyde is shipped in __________ drums.
Acetaldehyde is shipped in __________ drums.
Addition of __________ in steel can help in increasing the depth of hardness.
Addition of __________ in steel can help in increasing the depth of hardness.
__________ is used for examining the macro-structure of a material.
__________ is used for examining the macro-structure of a material.
Aqueous nitric acid is stored in __________ vessel.
Aqueous nitric acid is stored in __________ vessel.
An elastic behaviour of materials is expressed in terms of
An elastic behaviour of materials is expressed in terms of
Rubber lined pumps can be used to pump
Rubber lined pumps can be used to pump
'Semi steel' is
'Semi steel' is
A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.
A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.
For storing water and acid free benzol, use a __________ vessel.
For storing water and acid free benzol, use a __________ vessel.
Cast iron and steel pipes are produced by __________ casting.
Cast iron and steel pipes are produced by __________ casting.
Addition of 2% nickel in steel makes it suitable for making
Addition of 2% nickel in steel makes it suitable for making
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its
Hammers and railway rails are normally made of
Hammers and railway rails are normally made of
Nitriding of steel is done (in electric furnace) at __________ °C.
Nitriding of steel is done (in electric furnace) at __________ °C.
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its
The hardest material just prior to diamond in Mhos scale is
The hardest material just prior to diamond in Mhos scale is
Monel alloy is
Monel alloy is
Containers made of high silicon cast iron (14% Si) are not suitable for the storage of
Containers made of high silicon cast iron (14% Si) are not suitable for the storage of
Which of the following will have the highest melting point?
Which of the following will have the highest melting point?
Stainless steel contains
Stainless steel contains
Carbon supply in pack carburising process is in the form of
Carbon supply in pack carburising process is in the form of
Polymorphism is not exhibited by
Polymorphism is not exhibited by
Shock resisting steels should possess high
Shock resisting steels should possess high
Which of the following is not an alloy of copper and tin?
Which of the following is not an alloy of copper and tin?
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
Babbit metal used for bearings is a____base alloy.
Babbit metal used for bearings is a____base alloy.
Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?
Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?
The specific gravity of coal depends mainly on its __________ content.
The specific gravity of coal depends mainly on its __________ content.
Which of the following comprises of hydrocarbons?
Which of the following comprises of hydrocarbons?
Thermoplastic resins are those polymers, which
Thermoplastic resins are those polymers, which
Fatigue failure of a material may occur, when it is subjected to __________ stress.
Fatigue failure of a material may occur, when it is subjected to __________ stress.
Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of
Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of
Which one has the maximum tensile strength out of the following?
Which one has the maximum tensile strength out of the following?
The most commonly used resin for making reinforced plastic is
The most commonly used resin for making reinforced plastic is
For spinning viscose rayon, the extrusion spinnerettes are made of
For spinning viscose rayon, the extrusion spinnerettes are made of
Residual magnetism in steel for magnets is increased by the addition of
Residual magnetism in steel for magnets is increased by the addition of
The digester of a Gobar gas plant is a
The digester of a Gobar gas plant is a
Most common stainless steel type 316, which is highly resistant to corrosion contains
Most common stainless steel type 316, which is highly resistant to corrosion contains
Which of the following alloys does not contain nickel?
Which of the following alloys does not contain nickel?
Hardest material so far found is
Hardest material so far found is
Spray dryer for evaporating milk to produce milk powder is made of
Spray dryer for evaporating milk to produce milk powder is made of
__________ is added in low carbon steel to raise its yield point.
__________ is added in low carbon steel to raise its yield point.
Rotary kilns in cement industry are lined with____bricks.
Rotary kilns in cement industry are lined with____bricks.
Presence of nitrogen in steel
Presence of nitrogen in steel
Combination of metals and ceramics are called
Combination of metals and ceramics are called
Which of the following is the softest material?
Which of the following is the softest material?
Cold work tool steel should have
Cold work tool steel should have
