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You Are On Multi Choice Question Bank SET 719
35951. The largest consumption of zinc for alloys is in the making of
(A): bearing metal (B): brasses (C): brazing solder (D): die casting alloys
35952. Plate and frame filter press is usually made of
(A): mild steel (B): cast iron (C): stainless steel (D): galvanised iron
35953. Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
(A): plain carbon steel (B): stainless steel (C): rubber or durmet-20 lined (D): lead
35954. Nickel and copper are the basic constituents of
(A): hastelloy (B): monel metal (C): German silver (D): inconel
35955. Copper has very low
(A): malleability (B): ductility (C): tensile strength (D): thermal & electrical conductivity
35956. Hardest material so far found is
(A): diamond (B): graphite (C): carborundum (D): pumice stone
35957. Most suitable material of construction for the storage of concentrated nitric acid is
(A): cast iron (B): monel (C): karbate (D): aluminium or chromium alloys (Cr > 18% for cold acid)
35958. The most resistant material to alkaline corrosion is
(A): duriron (B): nickel (C): aluminium (D): karbate
35959. Tin coating is not done by
(A): vaporising (B): hot dipping (C): electro deposition (D): spraying
35960. Stainless steel is not corroded by
(A): hydrochloric acid (10%). (B): nitric acid (10%). (C): sulphuric acid (10%). (D): saturated brine.
35961. __________ is added in stainless steel to prevent inter crystal corrosion.
(A): Vanadium (B): Niobium (C): Chromium (D): Nickel
35962. Out of round brake drums causes the tires to wear
(A): On the side (B): On the outer side (C): A single spots (D): Edges
35963. Babbit metal is not a
(A): tin base alloy (B): white metal (C): lead base alloy (D): pure metal
35964. The primary function of lubrication is to
(A): Provide cooling effect (B): Provide sealing effect (C): Provide cleaning effect (D): Reduce wear
35965. Which of the following is the lightest of engineering metals ?
(A): Magnesium (B): Aluminium (C): Titanium (D): Tin
35966. Evaporators used in caustic soda recovery and production plant are made of
(A): monel metal (B): gun metal (C): wood metal (D): babbit metal
35967. With increase in carbide/graphite ratio in cast iron, its
(A): hardness & brittleness increases. (B): ductility decreases. (C): both and . (D): neither nor .
35968. The fermentor used in the production of pencillin (by deep fermentation process) is made of
(A): glass (B): glass lined steel (C): high silicon cast iron (D): procelain
35969. Nickel (76%) and chromium (15%) alloys are termed as
(A): inconel (B): monel (C): aluminium bronzes (D): brass
35970. Low carbon steels are those in which carbon percentage is around
(A): 0.1 to 0.35 (B): 0.4 to 0.7 (C): 0.8 to 1.5 (D): 1.5 to 2
35971. White metal is an alloy of
(A): lead, tin and cadmium (B): copper, tin and zinc (C): copper and lead (D): none of these
35972. The carbonating tower used in Solvay process of soda ash manufacture is made of
(A): cast iron (B): stainless steel (C): karbate (D): lead lined steel
35973. For platinum thermocouples, lead wires are made of
(A): copper & copper-nickel alloys. (B): copper & iron. (C): iron & nickel. (D): tin & nickel.
35974. High resistance electrical heating elements/wire are not made of
(A): marageing steel (B): nimonic alloys (C): kanthal wire (D): nichrome
35975. An indication of ignition quality of a diesel fuel is given by
(A): Detonation (B): Octane number (C): Cetane number (D): Pre-ignition
35976. 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
35977. Wood metal is not used for making
(A): soft solder. (B): casting for dental work. (C): storage tank for storing brine and caustic soda. (D): fusible safety plug for pressure cooker.
35978. An ideal material of construction for the storage of 50% caustic soda solution would be
(A): karbate (B): high silicon cast iron (C): monel (D): none of these
35979. Which of the following is the hardest ?
(A): Cementite (B): Pearlite (C): Austenite (D): Ferrite
35980. Which of the following alloy steels is the most suitable for making gun barrels and projectiles ?
(A): Tungsten steel (B): Molybdenum steel (C): Nickel-chrome steel (D): Cobalt steel
35981. The process of heating the cold pressed metallic powder is called __________ in powder metallurgy.
(A): precipitation (B): fusion (C): sintering (D): agglomeration
35982. Sulphuric acid pickling tanks are lined with
(A): nickel (B): rubber (C): aluminium (D): glass
35983. Valves in pipe size of 2" and under are normally made of
(A): wrought iron (B): brass (C): bronze (D): monel
35984. Calorific value of diesel fuel is
(A): 50 MJ/KG (B): 50 KJ/KG (C): 50 J/KG (D): 50 GJ/KG
35985. Which is an amorphous material ?
(A): Glass (B): Mica (C): Brass (D): Cast iron
35986. In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of
(A): stainless steel (B): cast iron (C): lead lined steel (D): rubber lined steel
35987. Platinum and silver are corroded by
(A): caustic soda solution (B): phosphoric acid (C): sulphuric acid (10%) (D): none of these
35988. Zircalloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium
(A): tin, nickel, iron and chromium (B): and graphite (C): and copper (D): none of these
35989. The material used in the filament of electric bulbs is
(A): nichrome (B): tungsten (C): constantan (D): German silver
35990. Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making
(A): shafts (B): flanges (C): gears (D): shear blades
35991. Caustic soda can be stored in __________ drums.
(A): steel (B): cast iron (C): brass (D): gun metal
35992. Which type of valve are used in I.engines?
(A): Sleeve valve (B): Rotary valve (C): Reed valve (D): Poppet valve
35993. Wrought iron is
(A): high carbon iron. (B): highly resistance to acid corrosion. (C): malleable & ductile; and hence is used for chain links, hooks & couplings. (D): an alloy of iron, chromium & carbon.
35994. Perspex is nothing but
(A): acrylic sheet (B): an elastomer (C): an alloy of lead and tin (D): aluminium foil clad with bakelite
35995. Centrifugal pump made of pyrex or glass can't be used to pump
(A): milk and fruit juices. (B): alkaline solutions. (C): dilute H2SO4 at room temperature. (D): brine.
35996. Ability of a material to __________ is indicated by its damping capacity.
(A): withstand compression (B): absorb vibration (C): absorb shock (D): none of these
35997. Corrosion resistance of steel is increased by the addition of
(A): phosphorous and tungsten. (B): nickel and chromium. (C): lead and vanadium. (D): molybdenum and tungsten.
35998. Hydrochloric acid is __________ corrosive to common metals.
(A): least (B): not (C): mildly (D): highly
35999. Tank furnace used for melting of glass is made of
(A): mild steel (B): cast iron (C): refractory blocks (D): stainless steel
36000. Spray dryer for evaporating milk to produce milk powder is made of
(A): lead lined steel (B): stainless steel (C): aluminium (D): cast iron
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