0% 0 Chemical Engineering Basics Quiz 3 1 / 50 Biological shield in a nuclear reactor is generally provided to protect against the___________? ?-rays Electrons Gamma rays & neutrons ?-rays 2 / 50 Brazing filler metal used for joining steel plates__________? Melts below 300?C Is copper phosphorous alloy Is copper Melts below the melting points of base metals 3 / 50 Calorific value of ______ are almost same? Lignite & anthracite coal Coal gas & natural gas Lignite & coal gas Petrol & diesel 4 / 50 Case hardening is not done by_________? Both ?B? & ?C? Nitriding Hot dipping Electroplating 5 / 50 Cascade control is_____? All A, B & C Used when changes in process conditions cause serious upsets in the controlled variable Useful to control flow from temperature The continuous adjustment of the set point index of an automatic control loop by a primary(master) controller 6 / 50 Boiler tube size is specified by its thickness and _______ diameter ? Mean None of these Outside Inside 7 / 50 Change in volume of metals from absolute zero temperature to their melting points is_____? Different for different metals Less for low melting point metals Less for high melting point metals Almost same for all metals 8 / 50 Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium________? Chloride Sulphate Nitrate Carbonate 9 / 50 Carbon is present in the form of _________ in grey cast iron ? Nodular aggregates of graphite Cementite Flakes Spheroids 10 / 50 Brazing is the joining of metals_______? Both A. & B. Neither A. nor (B) With a non-ferrous filler Without melting the base metal 11 / 50 Atomic ________ is a whole number for an element? None of these Number Weight Radius 12 / 50 Angular displacement can be measured suitably by a________? Linear variable differential transducer (LVDT) Tachometer Stroboscope Shaft encoder 13 / 50 An example of unsteady non uniform flow is the flow of liquid under pressure through a___________? Tapering pipe at constant flow rate None of these Tapering pipe at either decreasing or increasing flow rate Long pipeline of constant diameter 14 / 50 Boiling point of water gets lowered at high altitudes (e.g., hills), because _____? Atmospheric pressure is low None of these Temperature is low Atmospheric pressure is high 15 / 50 Batch process is preferred over continuous process, when the_____? All (A), B. & (C) Sales demand of product is not steady Product yields and quality cannot be achieved in continuous process, because of long residence time Same equipment cannot be used for several processes of the same nature 16 / 50 Carnot cycle is also termed as the constant __________ cycle in thermodynamics? Volume Pressure Heat Entropy 17 / 50 An alloy of Fe ? 0.4 % C is___________? Cast iron Eutectoid steel Hyper-eutectoid steel Hypo-eutectoid steel 18 / 50 Case hardening of a material is___________? Done to get a soft ductile interior with a very hard surface Carried out to get extreme hardness in its core Preceded by its tempering Followed by tempering or carburising 19 / 50 Austempering of steel requires it to be heated to 875?C followed by sudden cooling to 250- 525?C, thereby changing austenite to_____? Sorbite Bainite Troostite Martensite 20 / 50 At absolute zero temperature, for any reaction involving condensed phases ? ? S? = 0 , ? Cp? = 0 ? S? = 0 , ? E? = 0 ? G? = 0 , ? H? = 0 ? H? = 0 , ? S? = 0 21 / 50 Baffles provided on the shell side of a shell and tube heat exchanger are meant for _______? Preventing the fouling of tubes & stagnation of shell side fluid Improving heat transfer Both A & B Providing support for the tubes 22 / 50 Auto collimator is used to check______? Roughness Rotor balancing Angle Flatness 23 / 50 As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the ______ joint ? Lap Welded Butt None of these 24 / 50 Blast furnace slag is mainly molten__________? Sand Magnesium silicate Calcium silicate Iron pyrite 25 / 50 Basic open hearth furnace (BOF) is not used for producing _______ steel? High alloy Killed None of these Rimming 26 / 50 Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than ? 5 20 10 35 27 / 50 Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is_____? Platinum Nickel Vanadium Cobalt 28 / 50 Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be________? Same Either more or less; depends on the climatic conditions More Less 29 / 50 Austempering process results in the formation of _________ structure ? Martensitic Bainitic Stressed Carburised 30 / 50 Blow off cock is provided in steam boiler to ______? Put out the fire in the furnace when the water level in the boiler falls to unsafe limit Guard the boiler in case of abnormal rise in steam pressure Regulate the supply of water in boiler Drain out water and sludge during its repair 31 / 50 At 100% relative humidity, the dew point temperature of moist air is__________? Less than the wet bulb temperature More than the wet bulb temperature Equal to the wet bulb temperature Equal to the ambient temperature 32 / 50 Cemented carbide tools are not suitable for cutting_____? Cast iron Steel Aluminium Brass 33 / 50 At the point of boundary layer separation in fluid flow, the _______? Velocity gradient is flat Shear stress is maximum Density variation is maximum Shear stress is zero 34 / 50 As the fluid flow rate increases, the float of the Rotameter______? Rotates at higher speed Rises in the tube Rotates at lower speed Drops down in the tube 35 / 50 An approximately ______ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ? Isochoric Isothermal Adiabatic Isentropic 36 / 50 An abrupt and sudden fall in the reading of barometer is an indication of the______? Rain Storm Cold wave Clear weather 37 / 50 As per international norms, the maximum permissible value of noise level in the industrial environment is ______ decibels as measured at a distance of 1.5 meters from the source of noise? 45 60 85 110 38 / 50 Annealing of white cast iron produces _______ iron? Spheroidal Grey Malleable Nodular 39 / 50 Bad odour in sanitary latrines is reduced by periodically sprinkling_______? Bleaching powder None of these Aluminium sulphate Lime powder 40 / 50 Cementite is in the lamellar form in the _______ phase of steel ? Ferritic Pearlitic Bainitic Martenistic 41 / 50 An oxidation process is accompanied with decrease in the______? Oxidation number All A , B. & C. Number of ions Number of electrons 42 / 50 Atomic __________ of an element is a whole number ? Weight Number Radius Volume 43 / 50 Boiler draught of 10 mm water column is equivalent to_______? 10 kgf/mm2 10 kgf/m2 1 kgf/m2 1 kgf/mm2 44 / 50 Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost_________? Plus selling expenses Only Plus variable cost Plus overhead cost 45 / 50 Cast iron contains ______ percent carbon? 5.25 2.5 3.75 4.75 46 / 50 Cassiterite is an ore of__________? Lead Tin Molybdenum Chromium 47 / 50 Brittleness induced due to the presence of sulphur in steel can be reduced by adding______? Magnesium Copper Vanadium Manganese 48 / 50 Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_______? 90% tungsten carbide and 10% cobalt 70% aluminium oxide & 30% silica 65% tungsten & 35% zirconium 30% nickel, 15% chromium & 55% tungsten 49 / 50 Carbon supply in pack carburising process is in the form of _____? Calcium carbide Graphite Charcoal Hydrocarbon oil 50 / 50 Brittleness induced due to the presence of sulphur in steel can be reduced by adding_______? Vanadium Copper Magnesium Manganese Provide Your Information NameEmailPhone Number Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemical Engineering Basics Quiz 2 Chemical Engineering Basics Quiz 4Next
