NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

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NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:02 am

NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment


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Question: A boiler is a in which water under pressure is transformed into steam by the application of heat

Answer:C: closed vessel



Question: In industries is used as a means of transferring heat energy

Answer:D: steam



Question: that is produced in boilers usually dissolves other materials thereby creating problems

Answer:C: the steam



Question: Small concentrations of can cause corrosion problems in boiler system of water treatment

Answer:A: oxygen



Question: In boiler furnace in the fuel is converted into heat

Answer:A: chemical energy



Question: A boiler is usually designed to high quality steam for industries

Answer:B: generate



Question: boilers are a type of boilers used in industries for water treatment

Answer:B: fire tubes



Question: deposited in water boiler system act as insulators and cause more problems

Answer:C: metallic oxides



Question: One of the main causes of corrosion in the boiler and pre boiler systems is

Answer:D: dissolved oxygen



Question: For industrial applications in water treatment there are main types of boilers that are used

Answer:A: two



Question: variations also cause problems in boiler water system

Answer:A: pH



Question: In a boiler the facility generating the steam is usually referred to as

Answer:B: the heart



Question: Efficiency of Boiler water system depends on the ability of the system to return back to the operating cycle

Answer:B: condensed steam



Question: For reliable and safe operation of boilers there is need for proper treatments

Answer:C: internal and external



Question: In boiler treatment removes oxygen carbondioxide as well as other non condensable gases from the feed water

Answer:A: deaeration



Question: In boiler water treatment are used to absorb oxygen

Answer:D: oxygen scavengers



Question: is one of the major problems associated with the use of boiler system

Answer:C: sludge deposition



Question: Boiler water system is used for heating under conditions

Answer:C: controlled



Question: The problems created from the use of boilers can be treated using

Answer:C: cation



Question: In boiler water system are used to minimize boiler water carryover

Answer:B: antifoams


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Re: NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:02 am

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Question: Many industrial processes produce

Answer:C: wastewaters



Question: Wastes produced differ from industry to

Answer:A: industry



Question: Screening process in industrial water treatment is referred to as the treatment

Answer:A: preliminary



Question: The screening process removes in industrial water treatment

Answer:B: debris and grit



Question: One of the sources of industrial wastewaters is

Answer:B: agricutural waste



Question: The treatment of wastewaters is referred to as secondary treatment

Answer:D: biologival



Question: Industrial wastewaters are also treated for other materials such as pesticidessolvents etc

Answer:A: synthetic organic



Question: Acids and alkalis in wastewaters are treated by

Answer:C: neutralization



Question: are waters that have been contaminated in some way by anthropogenic industrial or commercial activities

Answer:A: wastewaters



Question: Chemical treatment of wastewaters uses the chemical reactions between the reagents being used and the being removed

Answer:D: impurities



Question: Why is further treatment needed after the neutralization of acid and alkalis waste water

Answer:to remove toxic residues



Question: The activated sludge method using and oxygen to oxidise the organic materials

Answer:microorganism



Question: Screening process in industrial water treatment is referred to as the treatment

Answer:preliminary



Question: Biogradable materials are treated using

Answer:trickling filter



Question: Trickling filters are

Answer:biochemical process



Question: employing activated sludge process the settling tank is used to settle the

Answer:waste sludge



Question: Which of these is not an advantage of recycling process

Answer:none of the above



Question: Which of the following reaction take place in blast furnance

Answer:reduction



Question: Precipitation process is mainly used to remove

Answer:metalic toxis



Question: Nuclear industry generate which type of waste

Answer:radioactive



Question: The following are effects of magnsium ion in water excepts

Answer:PH is neutral



Question: Alum areagents

Answer:precipitation



Question: Water employed as coolant in iron steel industries are usually contaminated with

Answer:cyanide



Question: In the conversion of iron into sheet wire water is employed as

Answer:lubricant and coolant



Question: Which of the following is not true of waste from agricultural and food industries

Answer:Low concentration of SS



Question: Coagulation precipitation and ion exchange are all examples of

Answer:chemical process






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Re: NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:02 am

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Question: Q1 It save money II saves energy III provides new sources of fuel. Which of these is not an advantage of recycling process

Answer: none of the above



Question: Q2 The following are effects of magnsium ion in water excepts

Answer: PH is neutral



Question: Q3 Nuclear industry generate which type of waste

Answer: radioactive



Question: Q4 Water employed as coolant in iron amp; steel industries are usually contaminated with

Answer: cyanide



Question: Q5 In the conversion of iron into sheet wire, water is employed as ___________.

Answer: lubricant and coolant



Question: Q6 Which of the following reaction take place in blast furnance

Answer: reduction



Question: Q7 Which of the following is not true of waste from agricultural and food industries

Answer: Low concentration of SS



Question: Q8 Alum are�?��?��?��?��?�.agents.

Answer: precipitation



Question: Q9 Coagulation, precipitation and ion exchange are all examples of ______________.

Answer: chemical process



Question: Q10 Precipitation process is mainly used to remove

Answer: metalic toxis



Question: Q11 Why is further treatment needed after the neutralization of acid and alkalis waste water

Answer: to remove toxic residues



Question: Q12 employing activated sludge process the settling tank is used to settle the�?��?�

Answer: waste sludge



Question: Q13 The activated sludge method using and oxygen to oxidise the organic materials

Answer: microorganism



Question: Q14 Trickling filters are

Answer: biochemical process



Question: Q15 Biogradable materials are treated using ___________.

Answer: trickling filter



Question: Q16 Deaeration ,heating and filtration are examples of _________ treatment

Answer: external



Question: Q17 ________treatment helps to improve of the source of water before it is used as boiler feed water

Answer: external



Question: Q18 Organic fatty materials that are removed are called

Answer: sludge



Question: Q19 ____________ method is used in removing grits.

Answer: mechanical



Question: Q20 Primary treatment is used to remove which of the following impurities?

Answer: Oils and grease






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Re: NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:03 am

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Question: Q21 __________ recirculation system is used in the cooling of gas engine and compressor.

Answer: Closed



Question: Q22 In the industry, closed recirculation water system is used to control �?��?�..

Answer: temperature



Question: Q23 In a close recirculation system heat energy that is absorbed is transferred to the recirculating water of an open system through to water to water

Answer: controller



Question: Q24 In which of the following circulation system is evaporative cooling process carried out using cooling tower?

Answer: open system



Question: Q25 The treatment that ic carried out to minimize potential problems and avoid failure in the operation of the boiler is called ________

Answer: internal



Question: Q26 ___________ treatment is carried out before the operation of a boiler.

Answer: extrnal



Question: Q27 In which of the recirculation waste system is make up water to maintain a specific temperature

Answer: addictive systemq



Question: Q28 One of the following is not a type of Recirculation waste system

Answer: redirective system



Question: Q29 Waste management practises involves the following except ____________.

Answer: Discovering



Question: Q30 Recovering of the resources as well as the recycling of waste materials are practises common to

Answer: waste maintenance



Question: Q31 Waste management practise may depends on the following except

Answer: None of the above



Question: Q32 Which terms is used to represent a composing organic matter discarded electrical appliances, parts pesticides and cleansing fluids?

Answer: Leachate



Question: Q33 The collection, transportation, processing, disposal and monitoring of waste materials are refferred to as�?��?��?�..

Answer: waste management



Question: Q34 All the following except __________ are problems associated with landfill method of waste management

Answer: Liberation of gaseous pollutant which result in advance health effect



Question: Q35 The main disadvantage of incineration method of waste management is _____________.

Answer: abandoned unused quarries



Question: Q36 The waste management method used to produce fertilizer or compost is ____________.

Answer: Intergrated



Question: Q37 ____________ is disposed using incineration waste management method.

Answer: All of the above



Question: Q38 ________method involves the recycling of non-organic portion of waste

Answer: Intergrated



Question: Q39 The waste management method that involves the burying of organic wastes to convert them to heat, steam, gas and other residued is called

Answer: Incineration



Question: Q40 ____________ management method involves the burying of wastes in abandoned or unused quarries or borrow pits.

Answer: Landfill method







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Jed
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Re: NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:04 am

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Question: Q41 In industrial boiler water treatment, pH control product is used to prevent___________

Answer: corrosion enhancer



Question: Q42 ___________ treatment is carried out during the operation of a boiler

Answer: internal



Question: Q43 �?��?�.. circulation system is the most popular method of controlled cooling of water treatment

Answer: Closed system



Question: Q44 In which of the recirculation waste system is make up water to maintain a specific temperature

Answer: addictive system



Question: Q45 Clarification, softening and removal of minerals are example of _________ treatment

Answer: external



Question: Q46 When employing activated sludge system the organism feed on each other and form clumps which are called

Answer: flocs



Question: Q47 The decomposition of organic matter in the presence of oxygen is termed ___________.

Answer: aerobic



Question: Q48 The metallic oxide deposited in the boilerr usually act as a/an ___________

Answer: insulator



Question: Q49 The _____________ system is mainly used in the industry to regulate temperature.

Answer: closed



Question: Q50 Which form of energy are converted in the boiler furnace?

Answer: chemical to heat



Question: Q51 The boiler transfer heat to the boiler water through which process?

Answer: all of the above



Question: Q52 A closed vessel in which water under pressure is transformed into steam by the application of heat is called a _____

Answer: boiler



Question: Q53 One of the following is not an advantage of closed recirculating system

Answer: make up is very much needed



Question: Q54 The following are advantages of closed recirculating water system except _______

Answer: high evaporation occur



Question: Q55 ____________is not an advantage of closed circulating system .

Answer: increased corrosion



Question: Q56 The following are most reliable corrosion inhibitors except ______________

Answer: sulphate



Question: Q57 The apparatus used to reduce the corrosion in a closed system is called _________

Answer: corrosion inhibition



Question: Q58 What is the effect of increased water temperature in a closed system

Answer: corrosion



Question: Q59 _______________ is needed when leakage has occurred at pump packings.

Answer: make up water



Question: Q60 Which of the following condition is true when a closed system is operating at a relatively low temperature?

Answer: little make up water is required







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Re: NOUN Past TMA Questions & Solutions: ESM444 - Industrial Wastes and Industrial Water Treatment

Postby Jed » Fri Sep 13, 2019 12:04 am

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Question: Q61 _________ is/are limitations of closed recirculation water system.

Answer: none of the above



Question: Q62 If you were to choose a cooling system that will require the use of less amount of water, which of the following will be your choice?

Answer: closed recirculation water system



Question: Q63 _______ is used as a means for transfer of energy in an industrial scale.

Answer: steam



Question: Q64 Which of these systems has a more efficient control of temperature in equipments that generate heat?

Answer: closed recirculation water system



Question: Q65 Closed recirculation water cooling system has a problem of scale deposition.

Answer: not at all



Question: Q66 Which of these is applicable in cooling gas engines?

Answer: closed recirculation cooling system



Question: Q67 _________ is used for heat energy transfer in closed systems.

Answer: water-to-water exchanger



Question: Q68 Alternate cooling and heating in the absence of air is associated with ________ cooling system.

Answer: closed



Question: Q69 A possible advantage of open recirculation systems is that

Answer: large amounts of heat is removed with small amounts of water loss



Question: Q70 Evaporative cooling is typical of ________ cooling system.

Answer: open



Question: Q71 Microbial growth is associated with water cooling systems.

Answer: Totally true



Question: Q72 All but one of these can be ascribed to corrosion.

Answer: reduction of a metal



Question: Q73 Recirculation water cooling system can be _________.

Answer: open



Question: Q74 If water used for cooling is recycled and returned for use again, then it is a ________.

Answer: recirculation water cooling system



Question: Q75 What is the role of make-up water in a cooling system?

Answer: all of the above



Question: Q76 A cooling system in which water is used once for cooling and discharged is a ___________

Answer: once-through cooling system



Question: Q77 All but one of these accounts for why water is preferred for cooling than air.

Answer: It decomposes easily



Question: Q78 A milling machine was cooled with water instead of air and thereafter the water was recycled and used again. Which of these is true of the cooling process?

Answer: It is cooling process that involves recirculation



Question: Q79 One type of water cooling system is that in which water is delivered into __________.

Answer: all of the above



Question: Q80 There are ___________ types of water cooling systems.

Answer: 2



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