30 + Interview Questions in Binder Technology in Casting-Forming-Welding Ii Page 1 InterviewSolution

1.	In the given figure, Epoxy-acrylate has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performThis question was addressed to me during a job interview.This interesting question is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in division Binder Technology of Casting-Forming-Welding II
Answer» The correct answer is (a) Good performance To explain: In the given figure, EPOXY-acrylate has SHOWN a decently good performance in transverse strength. For epoxy acrylate, one MAY LOOK at the second column.

Discussion

2.	What does LPS stand for?(a) Limited Production Sand casting(b) Low Pressure System(c) Limited Production System(d) Low Pressure Sand castingI got this question by my school teacher while I was bunking the class.My question comes from Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» RIGHT ANSWER is (d) Low Pressure Sand casting Explanation: LPS stands for Low Pressure Sand Casting. The GROWTH in LPS in mainly found to be used only in for the cylindrical BLOCKS and HEADS.

Discussion

3.	From what is furfural alcohol derived?(a) Carbon dioxide(b) Waste water(c) Waste vegetables(d) Sulphur dioxideI had been asked this question in an internship interview.This intriguing question originated from Cold-Set Resin Binders topic in section Binder Technology of Casting-Forming-Welding II
Answer» RIGHT choice is (c) WASTE vegetables Explanation: Furfural ALCOHOL (FA) gets derived from vegetable MATTER which is wasted, by processing it under pressure.

Discussion

4.	In Ester cured alkaline phenolic, what is used as a coreactant?(a) A phenol(b) A ketone(c) An ester(d) An aldehydeI had been asked this question during an interview for a job.I need to ask this question from Gas-Vapour Cured Resin Binders topic in division Binder Technology of Casting-Forming-Welding II
Answer» Correct CHOICE is (C) An ester The explanation: In Ester CURED alkaline PHENOLIC, there is an ester called METHYL formate, which is usually used as a coreactant.

Discussion

5.	What is the phenol level in phenolic ester in casting?(a) Less than 2ppm(b) Less than 3ppm(c) Less than 4ppm(d) Less than 5ppmI had been asked this question by my school principal while I was bunking the class.I need to ask this question from Cold-Set Resin Binders topic in chapter Binder Technology of Casting-Forming-Welding II
Answer» CORRECT ANSWER is (a) LESS than 2ppm Best EXPLANATION: NONE.

Discussion

6.	Which of the following is produced by Novalak – acid system?(a) Ketone(b) Carboxylic acid(c) Ester(d) AldehydeThe question was asked in an interview.This interesting question is from Comparative Properties of Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II
Answer» The correct option is (d) Aldehyde Easy explanation: The novalak – ACID system PRODUCES formaldehyde, which by the name suggests is an aldehyde and methanol while PRODUCTION of CORES.

Discussion

7.	What is the formaldehyde level in phenolic ester in mixing?(a) Less than 0.2 parts per million(b) Less than 0.3 parts per million(c) Less than 0.4 parts per million(d) Less than 0.5 parts per millionThis question was addressed to me in an interview for internship.I need to ask this question from Cold-Set Resin Binders topic in section Binder Technology of Casting-Forming-Welding II
Answer» The CORRECT ANSWER is (d) Less than 0.5 PARTS per million Explanation: NONE.

Discussion

8.	The novalak – acid system needs what temperature conditions?(a) 15°C – 25°C(b) 25°C – 35°C(c) 35°C – 45°C(d) 45°C – 55°CThis question was addressed to me by my college director while I was bunking the class.Asked question is from Comparative Properties of Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II
Answer» The correct option is (c) 35°C – 45°C The best I can explain: The NOVALAK – acid SYSTEM needs to be operated in between the TEMPERATURE RANGE of 35°C – 45°C. When this system gets operated in these temperature ranges, it is observed to yield best results.

Discussion

9.	Which of the following is not an advantage of moderate to high volume aluminium castings?(a) Growth in low pressure(b) Flexibility(c) Low cost(d) Low brittlenessI got this question in an online interview.This intriguing question originated from Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II
Answer» The CORRECT OPTION is (d) LOW brittleness The explanation is: In moderate to HIGH volume aluminium castings, low pressure growth, flexibility and lower costs is an advantage, but not low brittleness.

Discussion

10.	In the given figure, novalak-acid has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performThis question was posed to me by my school teacher while I was bunking the class.I'm obligated to ask this question of Comparative Properties of Gas-Vapour Cured Resin Binders in chapter Binder Technology of Casting-Forming-Welding II
Answer» CORRECT CHOICE is (a) Good performance Explanation: Novalak-acid, in the given FIGURE has shown a good performance in transverse strength. For novalak-acid system, the column 4 can be considered.

Discussion

11.	Which of the following is not a casting performance of phenolic – urethane cores?(a) Moderate hot strength(b) Good hardenability(c) Surface finish(d) Low nitrogen levelThis question was posed to me during an online exam.My enquiry is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» Correct option is (b) Good hardenability For EXPLANATION I WOULD say: Under casting performance of phenolic – urethane cores, having good hardenability does not COME under it.

Discussion

12.	In Amine cured phenolic urethane, what is used as the catalyzing reagent?(a) Primary amine(b) Secondary amine(c) Tertiary amine(d) Nitrogen dioxideThe question was posed to me during an interview for a job.I need to ask this question from Gas-Vapour Cured Resin Binders topic in chapter Binder Technology of Casting-Forming-Welding II
Answer» The correct ANSWER is (c) TERTIARY amine Best explanation: In amine cured phenolic URETHANE, a tertiary vaporized amine is used as a catalyst and is therefore, used for the catalyzation of the REACTION.

Discussion

13.	What is the pH level of leachate?(a) 1-3(b) 3-6(c) 6-9(d) 9-12This question was addressed to me in semester exam.My doubt stems from Cold-Set Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» The correct choice is (c) 6-9 For explanation I would SAY: The pH LEVEL of the leachate has the requirement to be somewhere in between 6 to 9 on the pH scale. This would INDICATE that, the SUBSTANCE leachate is a BASIC substance.

Discussion

14.	In the given figure, alkaline-phenolic has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performI have been asked this question in unit test.Question is taken from Comparative Properties of Gas-Vapour Cured Resin Binders topic in chapter Binder Technology of Casting-Forming-Welding II
Answer» Correct OPTION is (B) Moderate performance For explanation: None.

Discussion

15.	Which of the following is not an advantage in low volume core production?(a) High production(b) Consistency(c) Mould rigidity(d) HardenabilityThe question was posed to me during an interview.My question is based upon Gas-Vapour Cured Resin Binders in section Binder Technology of Casting-Forming-Welding II
Answer» The correct choice is (d) Hardenability To ELABORATE: In low VOLUME core PRODUCTION, it offers high rate of production, better CONSISTENCY and mould rigidity, but not hardenability.

Discussion

16.	What is the source of fuel of the boiler in process energy?(a) Waste from FA processing(b) Waste from CO2 production(c) Waste from SO2 production(d) Waste from NO2 productionThis question was addressed to me in unit test.My doubt is from Cold-Set Resin Binders in section Binder Technology of Casting-Forming-Welding II
Answer» The correct option is (a) Waste from FA processing For EXPLANATION I WOULD SAY: The waste that is ACHIEVED after processing of furfural alcohol is used to fuel the boiler in the process ENERGY.

Discussion

17.	Potassium hydroxide melts at what temperature?(a) 260°C(b) 360°C(c) 460°C(d) 560°CI have been asked this question in examination.I'm obligated to ask this question of Cold-Set Resin Binders topic in division Binder Technology of Casting-Forming-Welding II
Answer» The CORRECT option is (B) 360°C To EXPLAIN: Potassium hydroxide is known to have its melting point at a temperature of 360°C, but it is known to have a very high BOILING point of 1320°C.

Discussion

18.	Which of the following is an advantage of high volume core production?(a) Durability(b) High strength(c) Low cost(d) Cures low volume productionI got this question in class test.I want to ask this question from Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» The correct CHOICE is (c) Low cost For explanation: The very basic requirements of HIGH VOLUME core PRODUCTION is, low cost and fast manufacturing.

Discussion

19.	What reacts with polyether phenolic resin to give polyurethane structure?(a) Diphenyl methane diisocynate(b) Triphenyl ethane diisocynate(c) Diphenyl ethane diisocynate(d) Triphenyl methane diisocynateI had been asked this question by my school principal while I was bunking the class.The above asked question is from Gas-Vapour Cured Resin Binders in section Binder Technology of Casting-Forming-Welding II
Answer» The CORRECT answer is (a) Diphenyl METHANE diisocynate To EXPLAIN I would say: In amine CURED PHENOLIC urethane, a tertiary vaporized amine is used to catalyze the reaction between polyether phenolic resin and Diphenyl methane diisocynate to give out polyurethane structure.

Discussion

20.	High volume mould production is done using which sand?(a) Green sand(b) Dry sand(c) Loam sand(d) Sharp sandI got this question in a job interview.Asked question is from Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II
Answer» Right answer is (a) GREEN sand For explanation: When it comes to the production of HIGH volume core PRODUCTIONS, the cost essentially should be low. High volume MOULD production is done using green sand only.

Discussion

21.	In the given figure, phenolic urethane has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performI got this question during an interview for a job.My question is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» Correct CHOICE is (a) Good PERFORMANCE To elaborate: In the given figure, PHENOLIC urethane has SHOWN a good performance in transverse strength. The FIRST column is indicating the answer here.

Discussion

22.	Green sand has high volume production rate than gas-vapour cured system.(a) True(b) FalseI got this question in an international level competition.This interesting question is from Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» The correct ANSWER is (b) False For EXPLANATION I would say: The PRODUCTION rate in GAS and vapour cured system, is comparatively lower than that of green sand.

Discussion

23.	Epoxy – acrylate requires SO2 for curing.(a) True(b) FalseThe question was asked in semester exam.This question is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II
Answer» CORRECT option is (a) True Easiest EXPLANATION: Sulphur dioxide is by nature an acidic COMPOUND. Epoxy-acrylate largely needs sulphur dioxide for its curing, needing good control of it.

Discussion

24.	Potassium hydroxide boils at what temperature?(a) 1260°C(b) 1320°C(c) 1840°C(d) 2560°CThe question was posed to me during an interview.My doubt stems from Cold-Set Resin Binders topic in section Binder Technology of Casting-Forming-Welding II
Answer» RIGHT OPTION is (B) 1320°C Explanation: NONE.

Discussion

25.	In the given figure, polyacrylate – CO2 cured, has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performI got this question during an online exam.The question is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in chapter Binder Technology of Casting-Forming-Welding II
Answer» RIGHT ANSWER is (C) Poor performance For explanation I WOULD SAY: None.

Discussion

26.	In the given figure, alkaline phenolic – CO2 cured has what kind of a performance in transverse strength?(a) Good performance(b) Moderate performance(c) Poor performance(d) Did not performI have been asked this question by my school teacher while I was bunking the class.The question is from Comparative Properties of Gas-Vapour Cured Resin Binders in chapter Binder Technology of Casting-Forming-Welding II
Answer» The correct answer is (c) POOR performance Explanation: In the GIVEN FIGURE, alkaline phenolic-CO2 CURED, has shown a poor performance in transverse strength.

Discussion

27.	What should the total percentage of re-use of sand in reclamation be?(a) 80%(b) 85%(c) 90%(d) 95%This question was posed to me in an interview for internship.My question is from Cold-Set Resin Binders in chapter Binder Technology of Casting-Forming-Welding II
Answer» Correct answer is (d) 95% EASY EXPLANATION: There is some amount of threat which is FACED by the phenolic-ester COMPOUNDS. This threat causes a KIND of limitation to the reclamation. Ideally, the total percentage should be 95%.

Discussion

28.	What is mixed with calcium hydroxide on sand for CO2 cured polyacrylate?(a) Sodium polyacrylate(b) Calcium polyacrylate(c) Aluminium polyacrylate(d) Iron polyacrylateI had been asked this question during an interview.My doubt stems from Gas-Vapour Cured Resin Binders in chapter Binder Technology of Casting-Forming-Welding II
Answer» Right ANSWER is (a) Sodium polyacrylate Explanation: ACCORDING to the reaction, sodium polyacrylate is mixed with CALCIUM hydroxide (CaOH2) on SAND and is later cured with carbon dioxide gas.

Discussion

29.	What is the formaldehyde level in phenolic ester in casting?(a) Less than 0.2ppm(b) Less than 0.3ppm(c) Less than 0.4ppm(d) Less than 0.5ppmThis question was posed to me in a national level competition.This interesting question is from Cold-Set Resin Binders in section Binder Technology of Casting-Forming-Welding II
Answer» RIGHT CHOICE is (d) LESS than 0.5ppm For EXPLANATION: NONE.

Discussion

30.	For casting, in phenolic esters, formaldehyde levels are low.(a) True(b) FalseI have been asked this question by my college professor while I was bunking the class.Asked question is from Cold-Set Resin Binders in section Binder Technology of Casting-Forming-Welding II
Answer» The correct option is (a) True Best explanation: On mixing and EVEN on casting, in the phenolic ESTERS, the formaldehyde levels are found to be EXCEEDINGLY LOW.

Discussion

Explore topic-wise InterviewSolutions in .

From what is furfural alcohol derived?(a) Carbon dioxide(b) Waste water(c) Waste vegetables(d) Sulphur dioxideI had been asked this question in an internship interview.This intriguing question originated from Cold-Set Resin Binders topic in section Binder Technology of Casting-Forming-Welding II

What is the pH level of leachate?(a) 1-3(b) 3-6(c) 6-9(d) 9-12This question was addressed to me in semester exam.My doubt stems from Cold-Set Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II

Potassium hydroxide melts at what temperature?(a) 260°C(b) 360°C(c) 460°C(d) 560°CI have been asked this question in examination.I'm obligated to ask this question of Cold-Set Resin Binders topic in division Binder Technology of Casting-Forming-Welding II

High volume mould production is done using which sand?(a) Green sand(b) Dry sand(c) Loam sand(d) Sharp sandI got this question in a job interview.Asked question is from Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II

Green sand has high volume production rate than gas-vapour cured system.(a) True(b) FalseI got this question in an international level competition.This interesting question is from Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II

Epoxy – acrylate requires SO2 for curing.(a) True(b) FalseThe question was asked in semester exam.This question is from Comparative Properties of Gas-Vapour Cured Resin Binders topic in portion Binder Technology of Casting-Forming-Welding II

Potassium hydroxide boils at what temperature?(a) 1260°C(b) 1320°C(c) 1840°C(d) 2560°CThe question was posed to me during an interview.My doubt stems from Cold-Set Resin Binders topic in section Binder Technology of Casting-Forming-Welding II

What should the total percentage of re-use of sand in reclamation be?(a) 80%(b) 85%(c) 90%(d) 95%This question was posed to me in an interview for internship.My question is from Cold-Set Resin Binders in chapter Binder Technology of Casting-Forming-Welding II

For casting, in phenolic esters, formaldehyde levels are low.(a) True(b) FalseI have been asked this question by my college professor while I was bunking the class.Asked question is from Cold-Set Resin Binders in section Binder Technology of Casting-Forming-Welding II