MCQOPTIONS
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MCQOPTIONS
This section includes 8247 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 901. |
Purchased cost of equipments for a chemical process plant ranges from __________ percent of the fixed capital investment. |
| A. | 10 to 20 |
| B. | 20 to 40 |
| C. | 45 to 60 |
| D. | 65 to 75 |
| Answer» C. 45 to 60 | |
| 902. |
Turn down ratio of a burner |
| A. | should be as low as possible i.e., 1 : 2. |
| B. | should be 1:1 for a batch type furnace.. |
| C. | is the ratio of maximum to minimum permissible heat input rates. |
| D. | is normally much more for a continuous furnace as compared to a batch furnace. |
| Answer» D. is normally much more for a continuous furnace as compared to a batch furnace. | |
| 903. |
Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace ? |
| A. | Economiser. |
| B. | Regenerator. |
| C. | Ceramic recuperator. |
| D. | Waste heat boiler. |
| Answer» C. Ceramic recuperator. | |
| 904. |
Heat balance of furnace provides means of determining the |
| A. | thermal efficiency of the process. |
| B. | sources of heat losses. |
| C. | scope of reduction of heat losses. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 905. |
Heat transfer rate to the charge/stock in a furnace does not depend upon the |
| A. | type of fuels viz solid, liquid or gaseous. |
| B. | flue gas temperature. |
| C. | emissivity of refractory walls. |
| D. | initial temperature of the charged stock. |
| Answer» B. flue gas temperature. | |
| 906. |
An example of indirectly heated furnace is the |
| A. | soaking pit |
| B. | muffle furnace |
| C. | reheating furnace |
| D. | none of these |
| Answer» C. reheating furnace | |
| 907. |
Specific heating capacity of a furnace is expressed as |
| A. | weight heated/hr |
| B. | weight heated/furnace volume |
| C. | weight heated/hr/furnace volume |
| D. | none of these |
| Answer» D. none of these | |
| 908. |
Air filtration in a furnace |
| A. | reduces its thermal efficiency. |
| B. | is indicated by flame sting out. |
| C. | increases the flue gas temperature. |
| D. | none of these. |
| Answer» B. is indicated by flame sting out. | |
| 909. |
Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600 C, the percentage stack loss will be maximum in case of complete combustion of |
| A. | furnace oil with air. |
| B. | furnace oil with oxygen. |
| C. | blast furnace gas with air. |
| D. | blast furnace gas with oxygen. |
| Answer» D. blast furnace gas with oxygen. | |
| 910. |
Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing ? |
| A. | Ash disposal problem. |
| B. | Excessive fly ash discharge from the stack. |
| C. | Higher power consumption in its transportation. |
| D. | Erosion of induced draft fan blades. |
| Answer» B. Excessive fly ash discharge from the stack. | |
| 911. |
Which of the following is a periodic furnace? |
| A. | Tunnel kiln |
| B. | Rotary kiln |
| C. | Soaking pit |
| D. | Reheating furnace. |
| Answer» D. Reheating furnace. | |
| 912. |
Dampers are located |
| A. | before the I.D fan |
| B. | after the I.D. fan |
| C. | near the top of the chimney |
| D. | anywhere after the I.D. fan |
| Answer» B. after the I.D. fan | |
| 913. |
Regenerators are normally provided in the |
| A. | glass melting furnace. |
| B. | open hearth furnace. |
| C. | by product coke ovens. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 914. |
Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ C, because corrosion prevails at higher temperatures. |
| A. | 350 |
| B. | 750 |
| C. | 1050 |
| D. | 1250 |
| Answer» C. 1050 | |
| 915. |
Furnace pressure is normally controlled by regulating the |
| A. | air pressure |
| B. | fuel gas pressure |
| C. | speed of I.D. fan |
| D. | damper |
| Answer» E. | |
| 916. |
Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the |
| A. | quantity & temperature of waste gas. |
| B. | dust concentration & nature of dust in waste gas. |
| C. | corrosive nature of the waste gas. |
| D. | all (a), (b) and (c). |
| Answer» C. corrosive nature of the waste gas. | |
| 917. |
Residual magnetism in steel for magnets is increased by the addition of |
| A. | nickel |
| B. | cobalt |
| C. | tungsten |
| D. | chromium |
| Answer» C. tungsten | |
| 918. |
Presence of nickel in steel improves its |
| A. | corrosion resistance. |
| B. | cutting ability. |
| C. | wear resistance. |
| D. | all (a), (b) and (c). |
| Answer» B. cutting ability. | |
| 919. |
Acetylene gas holder is made of |
| A. | copper |
| B. | cast iron |
| C. | steel |
| D. | monel metal |
| Answer» D. monel metal | |
| 920. |
Cast iron has very high |
| A. | compressive strength |
| B. | ductility |
| C. | shock resistance |
| D. | resistance to brittleness |
| Answer» B. ductility | |
| 921. |
Liquid ammonia is shipped in __________ containers. |
| A. | steel |
| B. | aluminium |
| C. | glass |
| D. | lead lined |
| Answer» D. lead lined | |
| 922. |
Cermets are __________ materials. |
| A. | refractory |
| B. | reinforced |
| C. | abrasive |
| D. | fully metallic |
| Answer» B. reinforced | |
| 923. |
Which of the following is not a component of the working capital for a chemical process plant ? |
| A. | Product inventory. |
| B. | In-process inventory. |
| C. | Minimum cash reserve. |
| D. | Storage facilities. |
| Answer» E. | |
| 924. |
__________ is a copolymer. |
| A. | Nylon-66 |
| B. | Polyrophylene |
| C. | PVC |
| D. | Poly tetra flouro ethylene |
| Answer» B. Polyrophylene | |
| 925. |
Polycaprolactum is nothing but |
| A. | orlon |
| B. | nylon 6, 6 |
| C. | nylon 6 |
| D. | saran |
| Answer» D. saran | |
| 926. |
Which of the following is a natural polyamide fibre. |
| A. | Wool |
| B. | Silk |
| C. | Cotton |
| D. | None of these |
| Answer» B. Silk | |
| 927. |
- glucose is the monomer of |
| A. | cellulose |
| B. | starch |
| C. | protein |
| D. | none of these |
| Answer» B. starch | |
| 928. |
Which of the following polymers shows the highest anti-tacking properties ? |
| A. | Melamine formaldehyde resin |
| B. | Phenolic resin |
| C. | Epoxy resin |
| D. | Alkyd resin |
| Answer» B. Phenolic resin | |
| 929. |
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate. |
| A. | Fibrous |
| B. | Leathery |
| C. | Rubbery |
| D. | Hard |
| Answer» C. Rubbery | |
| 930. |
Buna-N is also called |
| A. | butyl rubber |
| B. | nitrile rubber |
| C. | neoprene |
| D. | thiokol |
| Answer» C. neoprene | |
| 931. |
Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%) ? |
| A. | Water impermeable cellophane |
| B. | Polythene |
| C. | Cellulose acetate |
| D. | Teflon |
| Answer» C. Cellulose acetate | |
| 932. |
Viscosity of a polymer solution or melt |
| A. | decreases with increase in molecular weight. |
| B. | decreases with increase in temperature. |
| C. | increases with increase in temperature. |
| D. | does not vary with temperature rise. |
| Answer» D. does not vary with temperature rise. | |
| 933. |
Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals) ? |
| A. | Invar |
| B. | Constantan |
| C. | Chromel |
| D. | Alumel |
| Answer» B. Constantan | |
| 934. |
The purpose of nitriding the steel is to |
| A. | harden its surface. |
| B. | soften its surface. |
| C. | improve its reliability. |
| D. | none of these. |
| Answer» B. soften its surface. | |
| 935. |
Which of the following is not the commercial name of polymethylmethacrylate (PMMA) ? |
| A. | Perspex |
| B. | Lucite |
| C. | Plexiglass |
| D. | Teflon |
| Answer» E. | |
| 936. |
Density of low density polythene is about __________ gm/c.c. |
| A. | 0.38 |
| B. | 0.56 |
| C. | 0.81 |
| D. | 0.91 |
| Answer» E. | |
| 937. |
Polypropylene compared to polythene is |
| A. | harder |
| B. | stronger |
| C. | lighter |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 938. |
Identify the group in which all the polymers mentioned can be used to make fibres. |
| A. | Butadiene copolymers, Polyamides, Urea aldehyde |
| B. | Cellulose derivatives, Polyisoprene, Polyethylene |
| C. | Cellulose derivatives, Polyamides, Polyurathane |
| D. | Polypropylene, Poly vinyl chloride, Silicon |
| Answer» C. Cellulose derivatives, Polyamides, Polyurathane | |
| 939. |
Nylon 6 as compared to nylon 6, 6 has lower |
| A. | abrasion resistance. |
| B. | thermal stability. |
| C. | adhesion to rubber. |
| D. | hardness. |
| Answer» B. thermal stability. | |
| 940. |
Operating profit of a chemical plant is equal to |
| A. | profit before interest and tax i.e., net profit + interest + tax |
| B. | profit after tax plus depreciation |
| C. | net profit + tax |
| D. | profit after tax |
| Answer» B. profit after tax plus depreciation | |
| 941. |
Scheduling provides information about the |
| A. | proper utilisation of machines. |
| B. | means to minimise idle time for machines. |
| C. | time of completion of job. |
| D. | time of starting of job and also about how much work should be completed during a particular period. |
| Answer» E. | |
| 942. |
The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices. |
| A. | one |
| B. | three |
| C. | six |
| D. | twelve |
| Answer» B. three | |
| 943. |
Most chemical plants use an initial working capital amounting to 10-20% of the total capital investment. But this percentage may increase to __________ percent in case of seasonal products manufacturing plant. |
| A. | 30 |
| B. | 50 |
| C. | 75 |
| D. | 95 |
| Answer» C. 75 | |
| 944. |
Fixed charges for a chemical plant does not include the |
| A. | interest on borrowed money. |
| B. | rent of land and buildings. |
| C. | property tax, insurance and depreciation. |
| D. | repair and maintenance charges. |
| Answer» E. | |
| 945. |
Personnel working in the market research group is reponsible for the job of |
| A. | equipment selection. |
| B. | product evaluation. |
| C. | equipment design. |
| D. | cost estimation. |
| Answer» C. equipment design. | |
| 946. |
Which of the following is a component of working capital investment ? |
| A. | Utilities plants. |
| B. | Maintenance and repair inventory. |
| C. | Process equipments. |
| D. | Depreciation. |
| Answer» C. Process equipments. | |
| 947. |
"Break-even point" is the point of intersection of |
| A. | fixed cost and total cost. |
| B. | total cost and sales revenue. |
| C. | fixed cost and sales revenue. |
| D. | none of these. |
| Answer» C. fixed cost and sales revenue. | |
| 948. |
Which of the following is the cheaptest material of construction for the storage of sodium hydroxide upto a concentration of 75% ? |
| A. | Stainless steel |
| B. | Plain carbon steel |
| C. | Nickel |
| D. | Copper |
| Answer» C. Nickel | |
| 949. |
__________ of depreciation calculation does not take into account the interest on investments. |
| A. | Present worth method |
| B. | Sinking fund method |
| C. | Sum of the years-digits method |
| D. | all (a), (b) and (c) |
| Answer» D. all (a), (b) and (c) | |
| 950. |
Optimum economic pipe diameter for fluid is determined by the |
| A. | viscosity of the fluid. |
| B. | density of the fluid. |
| C. | total cost considerations (pumping cost plus fixed cost of the pipe). |
| D. | none of these. |
| Answer» D. none of these. | |