0% 0 Chemical Engineering Basics Quiz 7 1 / 50 L.D. (Linz-Donawitz) converter is used in the production of______? Steel Zinc Copper Aluminium 2 / 50 Inertial forces are obtained, when the elastic forces are multiplied by _______ number? Reynolds Mach Froude Euler 3 / 50 M10 index of coke indicates its______? Hardness Compressive strength Abrasion resistance Impact strength 4 / 50 Increase in the entropy of a system represents the_______? Increase in the availability of energy Degradation of energy Decrease in system pressure Increase in the temperature 5 / 50 Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an _______ body? White Opaque Grey Black 6 / 50 Magnesium is present in_____? Hypo solution Haemoglobin None of these Chlorophyll 7 / 50 LVDT used for displacement measurement is a/an ________ Transducer? Active Capacitive Passive None of these 8 / 50 Melting point & boiling points of liquid oxygen are respectively ? 218.8?C & ? 183?C, while the same for liquid nitrogen is ? 210?C & ? 195.8?C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ? ?K ?R ?C ?F 9 / 50 Lead is poured into the joints between two _____ pipes? Steel Concrete Plastic Cast iron 10 / 50 Materials having resistivity ranging from 1 to 100 ohm. cm is termed as_____? Insulator Conductor Semi-conductor None of these 11 / 50 Methyl orange indicator turns_______? Colourless in acidic medium Orange yellow in acidic medium Orange yellow in alkaline medium Colourless in basic medium 12 / 50 Metallic surveying tapes are made of ______ which has a low co-efficient of expansion & enough strength ? Duralumin Monel metal Hastelloy Invar 13 / 50 Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is _________ mm? 15 30 10 25 14 / 50 Joule-Thomson co-efficient is the ratio of_________? Pressure change to temperature change occuring during adiabatic compression of a gas Temperature change to pressure change occuring during adiabatic throttling of a gas Pressure change to temperature change occuring during adiabatic throttling of a gas Temperature change to pressure change occuring during adiabatic compression of a gas 15 / 50 Metalloids_________? Are not necessarily solids at room temperature Are good conductor of heat & electricity Act as electron donors with metals & as electron acceptor with non-metals Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron 16 / 50 Limestone addition in the blast furnace is done to flux ________ present in the raw materials? Al2O3 P SiO2 MnO2 17 / 50 In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ? Zirconia Alumina Tungsten carbide Bakelite 18 / 50 Maximum permissible sulphur content in steel is _______ percent ? 0.505 0.805 0.015 0.055 19 / 50 Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which ______ with increase in the pressure of steam? Increases May increase or decrease Remain same Decreases 20 / 50 Isotropic materials have the same _________ in all directions? Density Thermal properties Induced stresses Elastic properties 21 / 50 Lead is poured into the joint between two _______ pipes? Cast iron Concrete Mild steel Asbestos cement 22 / 50 Lead is poured into the joint between two ________ pipes ? Mild steel Asbestos cement Concrete Cast iron 23 / 50 Material of construction of foundry crucible is __________? Lead Stainless steel Graphite Cast iron 24 / 50 Insulation of liquid surface can be achieved by ______ on top of its surface? Floating hollow polypropylene spheres Spraying alumina powder Putting cement None of these 25 / 50 Lead pencil contains______? Graphite Lead sulphide Both B. & C. Lead 26 / 50 Large scale fire on fuel gas line is normally extinguished by_________? Water Nitrogen Steam Foam 27 / 50 Maximum change in the hardness of martensite occurs in the carbon content range of ______ percent in steel? 0.5 to 0.7 0.8 to 1.0 0.01 to 0.10 0.2 to 0.4 28 / 50 Increasing the carbon content of steel__________? Reduces the upper shelf energy Increasing the ductility transition temperature Decreases hardness Decreases brittleness 29 / 50 Increase in temperature, in general results in the______? Increase in the viscosities of both liquids & gases Increase in the viscosity of liquids and decrease in that of gases Decrease in the viscosity of liquids and increase in that of gases Decrease in the viscosities of both liquids & gases 30 / 50 Iron content in Indian iron ore is about __________ percent? 40-45 80-85 60-65 20-25 31 / 50 Metal shots used in shot blasting are made of ________? Stellite Steel Lead Bronze 32 / 50 Large diameter reinforced cement concrete (RCC) pipes are generally joined by ______ joint ? Collar Flanged iron Expansion Flexible 33 / 50 Maximum hardenability of steel depends upon its_________? Carbon content Grain size Alloying elements content Chemical composition 34 / 50 Lead is added to 60:40 brass primarily to improve__________? Machinability Strength Fluidity Corrosion resistance 35 / 50 Machinability of hard alloys and tool steels is improved by_______? Normalising Annealing Tempering Spheroidising 36 / 50 Main constituent of bone ash is______? Calcium phosphate Ammonium sulphate Animal charcoal Ammonium phosphate 37 / 50 Matte smelting is used in the extraction of_______? Lead Copper Zinc Aluminium 38 / 50 Increasing sulphur content in pig iron tends to make it _________? Ductile & malleable Hard Tough Soft 39 / 50 Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V ? b) = RT, depends upon its_____? Temperature only Temperature & specific volume Pressure & temperature Pressure & specific volume 40 / 50 Laser is a device to produce_____? A beam of white light A beam of coherent light Gamma rays Microwaves 41 / 50 Limestone is added in the blast furnace (during pig iron manufacture) to________? Reduce the coke consumption Form slag by combining with impurities Supply heat by undergoing exothermic reaction with impurities Reduce slag viscosity 42 / 50 Load cells used for the measurement of weight has_______? Provision of thermal compensation and is hermetically sealed No moving parts and incurs negligible deflection under load Compact & rugged construction with an accuracy of 0.1 to 1% All A, B & C 43 / 50 Liquor poisoning generally occurs due to the presence of ________ in it? Carbonic acid Impurities Ethyl alcohol Methyl alcohol 44 / 50 Mho?s scale of hardness, which consists of 10 standard minerals is used for the measurement of ________ hardness? Dynamic Indentation Scratch Rebound 45 / 50 Liquid nitrogen containers can be made from _____? Titanium HSLA steel Austenitic stainless steel Ferritic stainless steel 46 / 50 Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of__________? Pellets Briquettes Lumps Sinter 47 / 50 Materials having _________ lattice structure are usually the most ductile ? Hexagonal close packed (hcp) Body centred cubic (bcc) None of these Face centred cubic (fcc) 48 / 50 Maximum permissible air velocity in pipelines is about _______ metre/second ? 20 10 5 40 49 / 50 Maximum consumption of limestone is in the ______ industry? Cement Iron and steel Glass Fertiliser 50 / 50 In TIG welding, thoriated tungsten electrodes are used, because it ______? Is easy to prepare Has better electron emissivity Is stronger than ordinary tungsten Has higher current carrying capacity 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 6 Chemical Engineering Basics Quiz 8Next
