Aluminium as a material of construction suffers from the disadvantage of
Aluminium as a material of construction suffers from the disadvantage of
Which of the following has a very high carbide forming tendency in steels?
Which of the following has a very high carbide forming tendency in steels?
Reduction in the grain size reduces the __________ of the material.
Reduction in the grain size reduces the __________ of the material.
Cast iron has
Cast iron has
Softening of hardned steel is done by its
Softening of hardned steel is done by its
Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of
Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of
Duralumin is an alloy of
Duralumin is an alloy of
Fatigue failure of a material results from __________ stress.
Fatigue failure of a material results from __________ stress.
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of
German silver in an alloy of
German silver in an alloy of
Trough of an apron conveyor is made of
Trough of an apron conveyor is made of
Galvanised iron is
Galvanised iron is
Which is an amorphous material?
Which is an amorphous material?
Which of the following crystal structures characterises the austenitic stainless steel?
Which of the following crystal structures characterises the austenitic stainless steel?
Silicon percentage in acid resistant cast iron is about
Silicon percentage in acid resistant cast iron is about
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%)?
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%)?
__________ is added in stainless steel to prevent inter crystal corrosion.
__________ is added in stainless steel to prevent inter crystal corrosion.
Which of the following crystal structures characterises the ferritic stainless steel?
Which of the following crystal structures characterises the ferritic stainless steel?
Which is the purest form of iron?
Which is the purest form of iron?
Hardened steel is softened by
Hardened steel is softened by
Carbon is present in the uncombined (graphitic) form in case of
Carbon is present in the uncombined (graphitic) form in case of
Hastelloy comprises of
Hastelloy comprises of
The ability of a material to offer resistance to scratching or indentation is a measure of its
The ability of a material to offer resistance to scratching or indentation is a measure of its
Which of the following exercises most powerful influence on the mechanical properties of steel?
Which of the following exercises most powerful influence on the mechanical properties of steel?
Age hardening is concerned with
Age hardening is concerned with
Which one occupies the lowermost position in the electromotive series of metals?
Which one occupies the lowermost position in the electromotive series of metals?
Graphite is corroded by
Graphite is corroded by
__________ moulding process can not be used for thermoplastic plastics.
__________ moulding process can not be used for thermoplastic plastics.
Mercury is transported in metal containers made of
Mercury is transported in metal containers made of
Maximum consumption of zinc is in
Maximum consumption of zinc is in
Which of the following has the poorest wel-dability?
Which of the following has the poorest wel-dability?
Photographic plates are coated with
Photographic plates are coated with
Which of the following is a light alloy?
Which of the following is a light alloy?
Presence of cobalt in steel improves its
Presence of cobalt in steel improves its
Very high sulphur in pig iron makes
Very high sulphur in pig iron makes
Glass is corroded by
Glass is corroded by
__________ possesses viscoelastic properties.
__________ possesses viscoelastic properties.
Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of
Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of
Purity of electrical grade aluminium should be ≥ __________ percent.
Purity of electrical grade aluminium should be ≥ __________ percent.
Which of the following has no effect on the carbide forming tendency in steels?
Which of the following has no effect on the carbide forming tendency in steels?
DDT is shipped in
DDT is shipped in
Pick out the correct statement.
Pick out the correct statement.
The 'bomb' in the bomb calorimeter is made of
The 'bomb' in the bomb calorimeter is made of
Plasticisers are added to polymers to improve their
Plasticisers are added to polymers to improve their
Which of the following is produced by addition polymerisation?
Which of the following is produced by addition polymerisation?
Pick out the wrong statement.
Pick out the wrong statement.
Wood metal is not used for making
Wood metal is not used for making
Hardest materials so far found is
Hardest materials so far found is
Fatigue strength of a material increases by
Fatigue strength of a material increases by
Which of the following is the lightest of engineering metals?
Which of the following is the lightest of engineering metals?
Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of
Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of
Nitriding of steel is a process for
Nitriding of steel is a process for
Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
Pick out the wrong statement
Pick out the wrong statement
Presence of nickel in steel improves its
Presence of nickel in steel improves its
Most suitable material of construction for the storage of concentrated nitric acid is
Most suitable material of construction for the storage of concentrated nitric acid is
Which of the following is a non-magnetic material?
Which of the following is a non-magnetic material?
The purpose of nitriding the steel is to
The purpose of nitriding the steel is to
The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.
The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.
The temperature at which new grains are formed in the metal is called the __________ temperature.
The temperature at which new grains are formed in the metal is called the __________ temperature.
Which of the following is not used as the ceramic material in 'cermets'?
Which of the following is not used as the ceramic material in 'cermets'?
__________ is used for determining the tensile strength of steels.
__________ is used for determining the tensile strength of steels.
Carbon percentage is the same in cast iron and
Carbon percentage is the same in cast iron and
The range of Mho's scale of hardness is from
The range of Mho's scale of hardness is from
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as
The most resistant material to alkaline corrosion is
The most resistant material to alkaline corrosion is
Sheardising process is used for
Sheardising process is used for
A material capable of undergoing large permanent deformation, when subjected to compression is termed as
A material capable of undergoing large permanent deformation, when subjected to compression is termed as
Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys.
Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys.
Which of the following alloy steels is the most suitable for making gun barrels and projectiles?
Which of the following alloy steels is the most suitable for making gun barrels and projectiles?
Graphite is a good
Graphite is a good
'Age hardening' of duralumin is due to
'Age hardening' of duralumin is due to
The largest consumption of zinc for alloys is in the making of
The largest consumption of zinc for alloys is in the making of
A material capable of undergoing large permanent deformation, when subjected to tension is termed as
A material capable of undergoing large permanent deformation, when subjected to tension is termed as
__________ is never shipped in glass carboys.
__________ is never shipped in glass carboys.
Evaporators used in caustic soda recovery and production plant are made of
Evaporators used in caustic soda recovery and production plant are made of
The crystal structure of most of the common metals is
The crystal structure of most of the common metals is
Ceramic materials fabrication can not be done by
Ceramic materials fabrication can not be done by
Cast irons are generally specified by their
Cast irons are generally specified by their
Which of the following has the least value of ultimate tensile strength (UTS)?
Which of the following has the least value of ultimate tensile strength (UTS)?
Which has the maximum melting point out of the following?
Which has the maximum melting point out of the following?
In order to be called steel, an alloy should have iron percentage greater than
In order to be called steel, an alloy should have iron percentage greater than
Plate and frame filter press is usually made of
Plate and frame filter press is usually made of
Mercury is transported in metal containers made of
Mercury is transported in metal containers made of
Pick out the wrong statement.
Pick out the wrong statement.
Gun metal is an alloy of
Gun metal is an alloy of
Slow and progressive deformation of a material with time under constant stress is called
Slow and progressive deformation of a material with time under constant stress is called
Nickel made/clad equipments are suitable for handling
Nickel made/clad equipments are suitable for handling
Which of the following pairs of elements may form an alloy?
Which of the following pairs of elements may form an alloy?
High speed steel should have high
High speed steel should have high
Which of the following is not a non-ferrous alloy?
Which of the following is not a non-ferrous alloy?
Which one contains the least percentage of carbon?
Which one contains the least percentage of carbon?
Aluminium storage vessel can be used to store
Aluminium storage vessel can be used to store
100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with
100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with
Which of the following has the highest compressive strength?
Which of the following has the highest compressive strength?
The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called
The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called
High carbon steel contains more than __________ percent carbon.
High carbon steel contains more than __________ percent carbon.
Carbon tetrachloride can be stored in a storage vessel made of
Carbon tetrachloride can be stored in a storage vessel made of
A material no longer behaves elastically beyond
A material no longer behaves elastically beyond
