Material Science MCQ – Stuffworking.com https://stuffworking.com Know The Basic Fri, 23 Oct 2020 19:05:58 +0000 en hourly 1 https://wordpress.org/?v=6.1 https://stuffworking.com/wp-content/uploads/2019/01/cropped-images-1-32x32.jpg Material Science MCQ – Stuffworking.com https://stuffworking.com 32 32 Material Science MCQ 11 https://stuffworking.com/material-science-mcq-11/ https://stuffworking.com/material-science-mcq-11/#respond Tue, 26 May 2020 06:44:18 +0000 http://stuffworking.com/?p=1517 Last updated: June 5, 2020

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1. 18-4-1 high speed steel contains
2. Grey cast iron has
3. Induction hardening is basically a
4. The strength is the ability of a material to resist
5. The material widely used for making pendulums of clocks is
6. The blade of a power saw is made of
7. The property of a material essential for spring materials is
8. Which of the following material has nearly zero coefficient of expansion?
9. The alloying element which can replace tungsten in high speed steels is
10. The machinability of steel is improved by adding
11. The type of space lattice found in alpha-iron is
12. Monel metal is an alloy of
13. When a low carbon steel is heated upto upper critical temperature
14. The steel widely used for motor car crankshafts is
15. Combined carbon in iron makes the metal
16. Quenching is not necessary when hardening is done by
17. The aluminium alloy, mainly used, for anodized utensil manufacture, is
18. The toughness of a material __________ when it is heated.
19. Bronze is an alloy of
20. The coordination number of a face centred cubic space lattice is
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1. The temperature required for full annealing in hyper-eutectoid steel is
2. Which of the following metal shrinks most from molten state to solid state?
3. A steel containing ferrite and pearlite is
4. The defect which takes place due to imperfect packing of atoms during crystallisation is known as
5. A coarse grained steel
6. Duralumin contains
7. Age hardening is related to
8. The addition of which of the following improves machining of copper?
9. _____________is added in low carbon steels to raise its yield point.
10. In process annealing, the hypo-eutectoid steel is
11. Delta-iron occurs between the temperature range of
12. White cast iron has
13. The stiffness is the ability of a material to resist deformation under stress.
Click for explanation
14. In low carbon steels, presence of small quantities of sulphur improves
15. The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called
16. Y-alloy contains
17. The main alloying elements high speed steel in order of increasing proportion are
18. Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?
19. Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
20. Cartidge brass can be
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1. Free cutting steels
2. The presence of hydrogen in steel causes
3. Tin base white metals are used where the bearings are subjected to
4. The charge of the blast furnace consists of
5. The ability of a material to resist fracture due to high impact loads, is called
6. The purpose of heat treatment is to
7. An alloy of copper, tin and zinc is known as
8. Which of the following iron exist between 910° C and 1403° C?
9. The material in which the atoms are arranged chaotically, is called
10. In basic bessemer process, the furnace is lined with
11. Polyvinylchloride (PVC) is a __________ material.
12. The steel produced by cementation process is known as __________ steel.
13. Duralumin has better strength than Y-alloy at high temperature.
14. Normalising of steel is done to
15. A steel containing 12 to 14% chromium and 0.12 to 0.35% carbon is called martensitic stainless steel.
16. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.
17. Shock resistance of steel is increased by adding
18. In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
19. A steel containing 16 to 18% chromium and about 0.12% carbon is called
20. The alloy, mainly used for corrosion resistance in stainless steels is
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1. In spheroidising process, the steel is
2. The percentage carbon content in wrought iron is about
3. The alloying element which reduces the formation of iron sulphide in steel is
4. In high speed steels, manganese is used to tougher the metal and to increase its
5. The machinability of aluminium increases when __________ is added to aluminium.
6. Nickel when added to copper improves
7. In the lower part of the blast furnace (zone of fusion), the temperature is
8. Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
9. Inconel contains
10. In a hardening process, the hypo-eutectoid steel is
11. Manganese is added in low carbon steel to
12. Beryllium bronze contains
13. The portion of the blast furnace below its widest cross-section is called
14. Gamma-iron occurs between the temperature range of
15. The ratio of the volume occupied by the atoms to the total volume of the unit cell is called
16. The property of a material which enables it to retain the deformation permanently, is called
17. Sulphur in cast iron
18. Cementite consist of
19. Chromium when added to steel __________ the tensile strength.
20. Which of the following is added in low carbon steels to prevent them from becoming porous?
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1. According to Indian standard specifications, cast iron designated by 'FG 150' means
2. The red flame during the operation of a bessemer converter indicates that the
3. Phosphor bronze has
4. In the austempering process of heat treatment, austenite changes into
5. Which of the following material has maximum malleability?
6. Which of the following property is desirable in parts subjected to shock and impact loads?
7. The bond formed by transferring electrons from one atom to another is called
8. Body centred cubic space lattice is found in
9. Corrosion resistance of steel is increased by adding nickel and chromium.
10. Grey cast iron is __________ than white cast iron.
11. When a low carbon steel is heated upto lower critical temperature,
12. Ball bearings are, usually, made from
13. The silicon steel is widely used for
14. The metal suitable for bearings subjected to heavy loads, is
15. Babbit metal is a
16. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
17. Which of the following property is desirable for materials used in tools and machines?
18. The compressive strength of cast iron is __________ that of its tensile strength.
19. When a steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
20. Eutectoid reaction occurs at
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MCQ 4 MCQ 5 MCQ 6 MCQ 7 >>

1. Cast iron has
2. The nuts and bolts are made from silicon steel.
3. Silicon in cast iron
4. The process which improves the machinability of steels, but lowers the hardness and tensile strength, is
5. Which of the following iron exists at 910° C?
6. A steel alloy containing 36% nickel is called
7. The addition of manganese to aluminium improves corrosion resistance.
8. The temperature point at which the change ends on heating the steel is called
9. The process of inducing carbon to __________ carbon steels in order to give it a hard surface is known as carburising.
10. Which of the following solids are malleable and ductile?
11. Thermosetting plastics are those materials which
12. Nichrome contains more iron than Inconel.
13. German silver contains
14. The machine tool guide ways are usually hardened by
15. Monel metal contains
16. A fine grained steel
17. Babbit metal contains
18. When a steel containing more than 0.8% carbon is cooled slowly below the lower critical point, it consists of
19. Which of the following inpurity in cast iron makes it hard and brittle?
20. Connecting rod is, usually, made from
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MCQ 3 MCQ 4 MCQ 5 MCQ 6 >>

1. The hardness is the property of a material due to which it
2. The percentage of carbon in cast iron varies from
3. Malleable cast iron is produced
4. Smelting is the process of
5. The ability of a material to absorb energy in the plastic range is called
6. A material is said to be allotropic, if it has
7. Closed packed hexagonal space lattice is found in
8. The hardness and tensile strength in austenitic stainless steel can be increased by
9. Brass is an alloy of
10. A steel with 0.8% carbon and 100% pearlite is called
11. A steel is heated at about 875° C where the structure consists of entirely austenite. It is then cooled suddenly at a temperature of about 250° C to 525° C. This process of heat treatment is known as
12. The casting ability of aluminium increases when __________ is added to aluminium.
13. Muntz metal (Yellow brass) contains
14. Which of the following is a mesomorphous material?
15. In a face centred cubic space lattice, there are
16. Admirality gun metal contains
17. The percentage of phosphorus is phosphor bronze is
18. For the pipe fitting like elbow, tee, union etc., which of the following is preferred?
19. Chilled cast iron is produced
20. Silicon is added in low carbon steels to
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MCQ 2 MCQ 3 MCQ 4 MCQ 5 >>

1. Thermoplastic materials are those materials which
2. Shock resisting steels should have
3. An eutectoid steel consists of
4. Which of the following material has maximum ductility?
5. The quenching of steel from the upper critical point results in a fine grained structure.
6. When the steel is normalised, its
7. An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
8. Which of the following has a fine gold colour and is used for imitation jewellery?
9. White cast iron has a high tensile strength and a low compressive strength.
10. Cast iron is a
11. Silicon bronze contains
12. Manganese bronze has
13. The slag from the blast furnace
14. Which of the following is a point imperfection?
15. The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as
16. The cutting tools are made from
17. The maximum solubility of carbon in austenite is 1.7% at 1130° C.
18. In a close packed hexagonal space lattice, there are
19. Iron-carbon alloys containing 4.3% carbon are known as hypo-eutectic cast irons.
20. The approximate height of a blast furnace is
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MCQ 1 MCQ 2 MCQ 3 MCQ 4 >>

1. Nodular cast iron is produced by adding __________ to the molten cast iron.
Explanation
2. The property of a material due to which it breaks with little permanent distortion, is called
3. The cupola is used to manufacture
4. The type of space lattice found in gamma-iron is
5. Free carbon in iron makes the metal
6. Dye penetrant method is generally used to locate
7. The unit cells
8. The charge is fed into the blast furnace through the
9. A small percentage of boron is added to steel in order to
10. Specify the sequence correctly
11. The property of a material necessary for forgings, in stamping images on coins and in ornamental work, is
12. The phosphorus and sulphur in steel making can be removed by using basic bessemer process.
13. Which of the following statement is wrong?
14. In corrosion resistant properties, bronzes are __________ to brasses.
15. In acidic bessemer process, the furnace is lined with
16. The iron ore mostly used for the production of pig iron is
17. A carbon steel having Brinell hardness number 100 should have ultimate tensile strength closer to
18. The steel widely used for making precision measuring instruments is
19. The ductility is the property of a material due to which it
20. The essential constituent of a hardened steel is
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MCQ 1 MCQ 2 MCQ 3 MCQ 4 >>

1. Iron ores are found in the form of
2. The lower critical temperature
3. The hardness of steel will more if it contains
4. Ferrite and pearlite makes the steel soft and ductile
5. In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled
6. The material in which the atoms are arranged regularly in some directions but not in others, is called
7. Haematite iron ore contains iron about
8. Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
9. The steel produced by bessemer or open hearth process is __________ to that produced by L-D process.
10. Crystal structure of a material is, generally, examined by
11. The addition of magnesium to cast iron increases its
12. The slow cooling of steel from the __________ results in a coarse grained structure.
13. Killed steels
14. Which one of the following sets of constituents is expected in equilibrium cooling of a hyper-eutectoid steel from austenitic state?
15. Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.
16. In a crystalline material, atoms are arranged in definite and orderly manner and form.
17. The austenitic stainless steel contains
18. The process used for relieving the internal stresses previously set up in the Metal and for increasing the machinability of steel, is
19. Steel containing upto 0.15% carbon, is known as
20. In a unit cell of a body centred cubic space lattice, there are __________ atoms.
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