Nickel (56%) and molybdenum (17%) alloys are called
Nickel (56%) and molybdenum (17%) alloys are called
H₂SO₄ (< 50% concentration) is corrosive to
H₂SO₄ (< 50% concentration) is corrosive to
Pick out the wrong statement
Pick out the wrong statement
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
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
Cast iron has very high
Cast iron has very high
Cold worked steel parts are normally subjected to
Cold worked steel parts are normally subjected to
A material is called 'ductile', if it can be
A material is called 'ductile', if it can be
The electrical conductivity of a __________ decreases with rise in temperature.
The electrical conductivity of a __________ decreases with rise in temperature.
Refined acetic acid storage vessel are made of
Refined acetic acid storage vessel are made of
Presence of high amount of silicon in cast iron
Presence of high amount of silicon in cast iron
Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making
Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making
Which of the following is produced by addition polymerisation?
Which of the following is produced by addition polymerisation?
Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and
Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and
Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
Wrought iron is a suitable material of construction for handling __________ solutions.
Wrought iron is a suitable material of construction for handling __________ solutions.
Copper has very low
Copper has very low
The purpose of nitriding the steel is to
The purpose of nitriding the steel is to
German silver used for decorative purposes contains maximum percentage of
German silver used for decorative purposes contains maximum percentage of
German silver is an alloy of copper, nickel and
German silver is an alloy of copper, nickel and
Cermets are used for making
Cermets are used for making
In cold working of metal as compared to its hot working
In cold working of metal as compared to its hot working
Bell metal is an alloy of
Bell metal is an alloy of
Which of the following is a light alloy?
Which of the following is a light alloy?
Low carbon steels are those in which carbon percentage is around
Low carbon steels are those in which carbon percentage is around
The maximum percentage of chromium that can be added to steel is about
The maximum percentage of chromium that can be added to steel is about
DDT is shipped in
DDT is shipped in
Cast irons are generally specified by their
Cast irons are generally specified by their
Wood metal is not used for making
Wood metal is not used for making
The preferred material of construction for storage tanks for 98% sulphuric acid is
The preferred material of construction for storage tanks for 98% sulphuric acid is
Plasticisers are added to polymers to improve their
Plasticisers are added to polymers to improve their
Dry chlorine can be handled in a vessel made of
Dry chlorine can be handled in a vessel made of
Which of the following has the highest density and the lowest melting point?
Which of the following has the highest density and the lowest melting point?
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.
Brass is an alloy of
Brass is an alloy of
The fermentor used for the production of ethyl alcohol from molasses is made of
The fermentor used for the production of ethyl alcohol from molasses is made of
Hydrochloric acid is stored in a__vessel.
Hydrochloric acid is stored in a__vessel.
Carbon percentage is the same in cast iron and
Carbon percentage is the same in cast iron and
__________ does not contain copper as an alloying element,
__________ does not contain copper as an alloying element,
Caustic soda can be stored in __________ drums.
Caustic soda can be stored in __________ drums.
Mixing vessel used for the chlorination of methane to produce methyl chloride is made of
Mixing vessel used for the chlorination of methane to produce methyl chloride is made of
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
Tin coating on metals is not done by
Tin coating on metals is not done by
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
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?
Ceramic materials are
Ceramic materials are
Cast iron is having very high
Cast iron is having very high
Polythene (low or high density) containers are not corroded by
Polythene (low or high density) containers are not corroded by
'Age hardening' of duralumin is due to
'Age hardening' of duralumin is due to
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
Which of the following crystal structures characterises the austenitic stainless steel?
Which of the following crystal structures characterises the austenitic stainless steel?
In the kraft (sulphate) process for the paper manufacture, the digestor is made of
In the kraft (sulphate) process for the paper manufacture, the digestor is made of
Cast iron is
Cast iron is
Cast iron compared to steel is better in
Cast iron compared to steel is better in
The behaviour of visco-elastic material is time dependent. This behaviour is commo in __________ materials.
The behaviour of visco-elastic material is time dependent. This behaviour is commo in __________ materials.
An alloy of iron containing 4% carbon is called
An alloy of iron containing 4% carbon is called
Nitriding of steel is a process for
Nitriding of steel is a process for
Constantan is an alloy of
Constantan is an alloy of
Cast iron has
Cast iron has
Duralumin is an alloy of
Duralumin is an alloy of
Which one contains the least percentage of carbon?
Which one contains the least percentage of carbon?
Chilled iron castings are
Chilled iron castings are
Cementite is
Cementite is
Babbit metal is not a
Babbit metal is not a
Alinco, which is a aluminium-cobalt-nickel steel, is used for making
Alinco, which is a aluminium-cobalt-nickel steel, is used for making
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
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
Ball bearings are generally made of
Ball bearings are generally made of
Biological shield in a nuclear power reactor is made of
Biological shield in a nuclear power reactor is made of
Constituents of stellite are
Constituents of stellite are
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?
Beehive coke ovens are made of __________ bricks.
Beehive coke ovens are made of __________ bricks.
Ceramic materials
Ceramic materials
The heat treatment process to which castings and the steel balls produced by cold heading are subjected is
The heat treatment process to which castings and the steel balls produced by cold heading are subjected is
Locomotive boiler tubes are made of __________ alloys.
Locomotive boiler tubes are made of __________ alloys.
Interchain forces are the weakest in case of
Interchain forces are the weakest in case of
Bearings subjected to light load are made of
Bearings subjected to light load are made of
Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making
Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making
Ability of a material to __________ is indicated by its damping capacity.
Ability of a material to __________ is indicated by its damping capacity.
Coke oven regenerators are made of __________ bricks.
Coke oven regenerators are made of __________ bricks.
Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys.
Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys.
Nickel is a __________ material.
Nickel is a __________ material.
Valves in pipe size of 2" and under are normally made of
Valves in pipe size of 2" and under are normally made of
Silicon percentage in acid resistant cast iron is about
Silicon percentage in acid resistant cast iron is about
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
Bush bearings are made of
Bush bearings are made of
Acetylene gas holder is made of
Acetylene gas holder is made of
Cast iron has
Cast iron has
Hardest materials so far found is
Hardest materials so far found is
18/8 steel is a/an __________ stainless steel.
18/8 steel is a/an __________ stainless steel.
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
With increase in carbide/graphite ratio in cast iron, its
With increase in carbide/graphite ratio in cast iron, its
Evaporators used in caustic soda recovery and production plant are made of
Evaporators used in caustic soda recovery and production plant are made of
Vessels made of __________ can be used to store dry chlorine.
Vessels made of __________ can be used to store dry chlorine.
The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?
The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?
Dilute sulphuric acid is transported in __________ pipes.
Dilute sulphuric acid is transported in __________ pipes.
Silicone rubber is not resistant to the corrosive action of
Silicone rubber is not resistant to the corrosive action of
An ideal material of construction for the storage of 50% caustic soda solution would be
An ideal material of construction for the storage of 50% caustic soda solution would be
How many atoms are there per unit cell in a body centred cubic lattice system?
How many atoms are there per unit cell in a body centred cubic lattice system?
