Which is an amorphous material?
A. Glass
B. Mica
C. Brass
D. Cast iron
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Pick out the correct statement.
A. Stainless steel is nothing but chromium coated steel
B. Hardening of a soft metal can be done by alloying it with another metal or non-metal
C. Plastic deformation of a material is its temporary distortion under the action of applied stress
D. Rusting of iron is not electrochemical in nature
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Plate and frame filter press is usually made of
A. Mild steel
B. Cast iron
C. Stainless steel
D. Galvanised iron
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Which of the following has the least value of ultimate tensile strength (UTS)?
A. Medium carbon steel
B. High carbon steel
C. Cast iron
D. Wrought iron
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Maximum consumption of zinc is in
A. Alloying
B. Galvanising
C. Utensil manufacture
D. Electrical industry
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Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower
A. Price
B. Corrosion resistance
C. Thermal conductivity
D. Abundant availability
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Inconel is an alloy of
A. Tin, zinc and nickel
B. Iron, nickel and chromium
C. Copper and nickel
D. Copper and tin
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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.
A. Ultimate
B. Yield point
C. Proof
D. None of these
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Pick out the wrong statement.
A. Bronze is an alloy of copper & tin
B. Brass is an alloy of copper & zinc
C. The alloy named 'German silver' does not contain any silver
D. The ability of a material to fracture without appreciable deformation is called its ductility
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Carbon is present in the combined form (carbide) in case of
A. Pig iron
B. Steel
C. Ferroalloys
D. All of the above
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Rubber lined pumps can be used to pump
A. Caustic soda
B. Chlorinated brine
C. Hypochlorous acid
D. All of the above
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Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)
A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Is tempered at 850°C
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Shock resisting steels should possess high
A. Hardness
B. Toughness
C. Tensile strength
D. Wear resistance
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When the steel is subjected to normalising, its __________ decreases.
A. Yield point
B. Ductility
C. Ultimate tensile strength (UTS)
D. None of these
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Molybdenum steels containing 0.15 to 0.40% molybdenum
A. Are prone to temper brittleness
B. Are used for automobile parts like gears, axle, shaft, bearings etc
C. Have very poor fatigue resistance
D. Do not contain nickel or chromium or both
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Which one is remelted and poured into moulds to get cast iron?
A. Wrought iron
B. Pig iron
C. Low carbon steel
D. Mild steel
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Reactor used in the production of polyvinyl chloride (PVC) is made of
A. Nickel or glass lined steel
B. Aluminium
C. Tantalum
D. Lead
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Soap kettle used in the production of laundry soap is made of
A. Steel with top section nickel clad or stainless steel
B. Cast iron
C. Nickel
D. Concrete
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In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
A. Concrete
B. Wood
C. Steel
D. Porcelain
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Cast iron is a __________ material.
A. Brittle
B. Ductile
C. Tough
D. Malleable
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