0% 0 Chemical Engineering Basics Quiz 10 1 / 50 Stainless steel is welded with difficulty because of______? Its high melting temperature Chromium carbide formation Chances of cracking Oxide film formation 2 / 50 The ability of tool steel to resist softening at high temperatures is termed as ___________ hardness? Extreme Extended Super Red 3 / 50 Strain hardening effect in a metal subjected to cold working is due to the _______ mechanism? Fracture Twinning Dislocation Slip 4 / 50 Routing in production, planning & control is concerned with the_____? Sequence of operation to be performed Progress of work performed Balancing of load on machines Authorisation of work to be performed 5 / 50 Specific __________ is a dimensionless quantity ? Heat Weight Humidity None of these 6 / 50 Sand used to stop the green sand from sticking to the pattern is termed as the _______ sand? Parting Loam Dry Synthetic 7 / 50 Stainless steel is welded using___________? Inert gas arc welding Oxy-acetylene flame Arc welding Oxy-hydrogen flame 8 / 50 Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ? 13,000 2,550 9,100 7,000 9 / 50 Temperature attained in soldering of metals is about _________ ?C? 400-500 1000-1100 650-800 150-300 10 / 50 Square steel key is normally strong in failure by shear & crushing. Keys are normally made of ________ steel bars? Cold rolled mild Forged Machinable stainless Hot rolled mild 11 / 50 Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_______? 2.5 1.25 3.75 5 12 / 50 Steel balls are manufactured by_______? Spinning Sintering Cold heading Casting 13 / 50 Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of _______ will facilitate the most accurate measurement of the temperature ? Aluminium Copper Steel Brass 14 / 50 Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be__________? Superheated None of these Wet Saturated 15 / 50 Speisses is a mixture of the following ? Antimonides of heavy metals Arsenides & antimonides of heavy metals Arsenides of heavy metals Iron, cobalt and nickel 16 / 50 Softening of hardened steel is done by its______? Carburising Tempering Annealing Normalising 17 / 50 Satellite is a __________ material? Ceramic Ferrous Non-ferrous cast alloy cutting tool Cemented carbide 18 / 50 Steel & cast iron pipes are produced by _______ casting ? Slush True centrifugal Die Investment 19 / 50 Silicon in steel___________? Increases its electrical resistivity and decreases the hysteresis loss Makes it usable in almost all magnetic circuits where alternating current is used Is present upto 5% & 4% respectively when used in transformers & motor armatures All ?A?, ?B? & ?C? 20 / 50 Steel produced from phosphatic iron is ________ in nature? Ductile Tough Malleable Brittle 21 / 50 Specific gravity of hot metal (pig iron) is _______ times that of the blast furnace slag ? 2 3 6 0.8 22 / 50 Steel is welded using the _________ flame ? Neutral Oxidising All A, B. & C Carburising 23 / 50 Steel containing low percentage of nickel, chromium & tungsten are termed as the ______ steel ? Tool Plain carbon Wrought Alloy 24 / 50 Silicon percentage in acid resistant cast iron is about _____? 4 20 14 8 25 / 50 The ?transition temperature? for ductile to brittle behavior of steel increases with increase in the ______ content in steel? Both A nor B Neither A nor B Manganese Carbon 26 / 50 Suitability of steel for its use in cable is judged by its strength in___________? Torsion Compression Shear Tension 27 / 50 Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode_________? All A, B. & C. Occurs higher in the electro-chemical series of metals Is much cheaper than the cathodic base material to be guarded against corrosion Is exemplified by magnesium plate 28 / 50 Screws are specified by their ______ diameters? Pitch Major None of these Minor 29 / 50 Spheroidising of a material is a/an _________ process? Annealing Hardening Tempering Normalising 30 / 50 Strain hardening effect in metals subjected to cold working is due to the ________ mechanism? Slip Dislocation Winning Fracture 31 / 50 Shrinkage allowance on pattern is provided to compensate for shrinkage when the _______? Solid phase temperature drops from freezing temperature to the room temperature Metal changes from liquid state to solid state at freezing temperature Liquid metal temperature drops from pouring temperature to room temperature Liquid metal temperature drops from pouring temperature to freezing temperature 32 / 50 Steels with high carbon equivalent have poor Weldability, because in these steels during welding_________? Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld Carbon and other alloying elements get oxidised from the weld pool Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld 33 / 50 Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are ________ respectively ? 70 & 30 50 & 50 30 & 70 90 & 10 34 / 50 The ?laughing gas? is___________? Nitrogen pentoxide Nitrous oxide Nitric oxide Nitrogen trioxide 35 / 50 Shampoos are commercially not available in the form of _____? Emulsion Gaseous mixture Powder Solution 36 / 50 Spherical shape of mercury droplets is due to its______? Low surface tension High surface tension High viscosity High density 37 / 50 Super heating of steam is done at constant_____? Volume Enthalpy Entropy Pressure 38 / 50 Speed of a submarine in deep sea & that of an aeroplane is measured by a/an_____? Stroboscope Hot wire anemometer Rotameter Pitot tube 39 / 50 Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal__________? Compressive strength Thermal co-efficient of expansion Young?s modulus Tensile strength 40 / 50 Sub zero treatment of steel is done to______? Induce temper brittleness after its hardening Reduce the retained austenite in hardened steel Suppress martensite transformation Enhance its working performance in sub zero atmosphere 41 / 50 Super conduction in metals is observed at a temperature of _________ ?K? About 273 About 373 >100 <100 42 / 50 Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ? V2/A2 V/A V/A2 V2/A 43 / 50 Spark plug is provided in a/an__________? Diesel engine Engine having carburettor Both B. & C. Compression ignition engine 44 / 50 Starting friction is low in case of the ______ lubrication? Mixed/semi-fluid Boundary Hydrostatic Hydrodynamic 45 / 50 Surface tension of a liquid__________? Decreases with rise in temperature All A, B. & C Is due to intermolecular forces of cohesion Is responsible for the spherical shape of an isolated liquid drop 46 / 50 Solute atoms which cause yield point phenomenon in mild steel are/is__________? Aluminium Boron Nitrogen Carbon 47 / 50 Tempering of a material does not improve its______? Toughness Machinability Softness Internal stress level 48 / 50 Runge-Kutta method is used to solve a/an _____? Ordinary differential equation of nth order None of these Simultaneous non-linear equation Linear differential equation 49 / 50 Sudden fall of atmospheric pressure by a large amount is an indication of the_______? Fair weather Storm Cold wave Rain 50 / 50 Stresses encountered in the metal forming processes are less than the ______ of the material? Elastic limit Fracture strength Limit of proportionality Yield strength Provide Your Information Your score is The average score is 0% LinkedIn Facebook Twitter 0% Restart quiz Send feedback Share on facebook Facebook Share on twitter Twitter Share on whatsapp WhatsApp PrevChemical Engineering Basics Quiz 9 Chemical Engineering Basics Quiz 11Next
