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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
It __________ the quantity and ___________ cost of sampling and testing.(a) Increases, Increases(b) Decreases, decreases(c) Increases, Decreases(d) Decreases, IncreasesThe question was asked by my college director while I was bunking the class.Question is from Maturity Concept ofConcrete topic in division Strength of Concrete of Concrete Technology |
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Answer» Right option is (b) DECREASES, decreases |
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| 2. |
Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa.(a) HPC(b) VHPC(c) OPC(d) HSCThe question was posed to me in homework.My doubt stems from HPC topic in division Strength of Concrete of Concrete Technology |
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Answer» The correct option is (a) HPC |
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| 3. |
What is the percentage of water by weight in UHPC?(a) 28.5(b) 4.4(c) 1.2(d) 6.2I got this question in class test.I'd like to ask this question from Ultra High Strength Concrete topic in chapter Strength of Concrete of Concrete Technology |
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Answer» Right option is (b) 4.4 |
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| 4. |
Ultra-High Performance Concrete (UHPC), also known as ______(a) Active powder concrete(b) NPC(c) Reactive powder concrete(d) High Strength concreteI had been asked this question in semester exam.Enquiry is from Ultra High Strength Concrete in chapter Strength of Concrete of Concrete Technology |
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Answer» Right option is (c) Reactive POWDER CONCRETE |
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| 5. |
High-Performance Concrete is ____________ as compared to Normal Strength Concrete.(a) Less brittle(b) Brittle(c) More brittle(d) Highly ductileI got this question in quiz.Asked question is from HPC in portion Strength of Concrete of Concrete Technology |
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Answer» The correct ANSWER is (c) More brittle |
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| 6. |
What is the percentage of PC by weight in UHPC?(a) 28.5(b) 4.4(c) 1.2(d) 6.2This question was addressed to me in an online quiz.Enquiry is from Ultra High Strength Concrete topic in section Strength of Concrete of Concrete Technology |
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Answer» RIGHT answer is (a) 28.5 Easy EXPLANATION: 28.5 is the percentage of PC by WEIGHT in UHPC according to the TYPICAL composition of Ductal. |
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| 7. |
High strength concrete is defined purely on the basis __________(a) Compressive strength(b) Poor strength(c) Tensile strength(d) Good strengthThe question was asked during an interview for a job.This intriguing question comes from High Strength Concrete in portion Strength of Concrete of Concrete Technology |
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Answer» RIGHT OPTION is (a) Compressive strength Explanation: High strength CONCRETE is defined PURELY on the basis of its compressive strength. |
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| 8. |
Range of modulus of elasticity for UHPC ___________(a) 30-35 GPa(b) 35-40 GPa(c) 40-45 GPa(d) 45-50 GPaI had been asked this question in a national level competition.I would like to ask this question from Ultra High Strength Concrete in division Strength of Concrete of Concrete Technology |
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Answer» CORRECT choice is (d) 45-50 GPa To elaborate: 45-50 GPa or 6500 to 7300 KSI is the range of modulus of elasticity for ultra-high performance CONCRETE. |
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| 9. |
____________ mm nominal maximum size aggregates gives optimum strength.(a) 9.5 and 10.5(b) 10.5 and 12.5(c) 9.5 and 12.5(d) 11.5 and 12.5I got this question in homework.My query is from HPC in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct answer is (c) 9.5 and 12.5 |
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| 10. |
High Performance concrete works out to be economical.(a) True(b) FalseI have been asked this question in a national level competition.The question is from HPC topic in portion Strength of Concrete of Concrete Technology |
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Answer» Right answer is (a) True |
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| 11. |
Maximum size of aggregates are used to produce 70MPa compressive strength is________(a) 20-30 mm(b) 10-20 mm(c) 30-40 mm(d) 40-50 mmThis question was posed to me during a job interview.The query is from High Strength Concrete topic in division Strength of Concrete of Concrete Technology |
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Answer» Right answer is (a) 20-30 MM |
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| 12. |
What could be the possible answer among the following for compressive strength of high strength concrete?(a) 10MPa(b) 20MPa(c) 30MPa(d) 40MPaThe question was posed to me in semester exam.My question is taken from High Strength Concrete in chapter Strength of Concrete of Concrete Technology |
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| 13. |
The material used for UHPC provides compressive strengths up to __________(a) 17000 psi(b) 20000 psi(c) 25000 psi(d) 29000 psiI got this question during an interview.The question is from Ultra High Strength Concrete topic in division Strength of Concrete of Concrete Technology |
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Answer» CORRECT choice is (d) 29000 psi For explanation I would say: The material PROVIDES COMPRESSIVE STRENGTHS of up to 29000 pounds per square inch. |
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| 14. |
For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately ___ MPa.(a) 10(b) 20(c) 30(d) 40The question was asked during a job interview.My query is from HPC topic in section Strength of Concrete of Concrete Technology |
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Answer» The CORRECT choice is (c) 30 |
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| 15. |
The material used for UHPC provides flexural strengths up to _________(a) 2000 psi(b) 5000 psi(c) 7000 psi(d) 10000 psiI got this question in an internship interview.The origin of the question is Ultra High Strength Concrete topic in division Strength of Concrete of Concrete Technology |
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Answer» Right option is (C) 7000 psi |
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| 16. |
The material used for UHPC provides compressive strengths up to ___________(a) 17000 psi(b) 20000 psi(c) 25000 psi(d) 29000 psiThis question was posed to me in a job interview.I'm obligated to ask this question of Maturity Concept ofConcrete in portion Strength of Concrete of Concrete Technology |
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Answer» RIGHT answer is (d) 29000 psi The best I can explain: The MATERIAL PROVIDES compressive strengths up to 29000 pounds per SQUARE inch. |
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| 17. |
A lower ratio leads to ___________(a) High strength(b) Low strength(c) Low durability(d) Ease to workThe question was posed to me in an interview for internship.This is a very interesting question from Maturity Concept ofConcrete in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct CHOICE is (a) High strength |
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| 18. |
Due to low w/c ratio ___________(a) It doesn’t cause any problems(b) It causes problems(c) Workability is easy(d) Strength is moreThis question was addressed to me in an internship interview.This key question is from High Strength Concrete in section Strength of Concrete of Concrete Technology |
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Answer» The correct option is (B) It causes problems |
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| 19. |
Maturity methods provide a ___________ simple approach for strength of concrete.(a) Relatively(b) Technically(c) Absolutely(d) ActuallyI had been asked this question during an interview for a job.My doubt stems from Maturity Concept ofConcrete topic in section Strength of Concrete of Concrete Technology |
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Answer» CORRECT answer is (a) Relatively The explanation: Maturity method provide a relatively simple approach for RELIABLY estimating the in-place early AGE COMPRESSIVE strength of concrete during construction. |
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| 20. |
It is ___________ strength and ___________ permeability.(a) High, high(b) Low, low(c) High, low(d) Low, highI had been asked this question in an international level competition.My doubt stems from HPC topic in portion Strength of Concrete of Concrete Technology |
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Answer» Right CHOICE is (C) High, low |
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| 21. |
What could be the possible answer among the following for water cement ratio for high strength concrete?(a) .5(b) .45(c) .4(d) .35This question was addressed to me in exam.Question is from High Strength Concrete topic in section Strength of Concrete of Concrete Technology |
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Answer» The correct OPTION is (d) .35 |
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| 22. |
Use of HSC in column ___________(a) Decrease the no of steel required in the same column(b) Increase the no of steel required in the same column(c) Decrease the no of steel required in the different column(d) Increase the no of steel required in the different columnThis question was addressed to me during an interview.My question is from High Strength Concrete in division Strength of Concrete of Concrete Technology |
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Answer» CORRECT option is (a) Decrease the no of steel required in the same COLUMN To EXPLAIN: Use of HSC in a column, decrease the NUMBER of steel required in the same column. |
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| 23. |
It is a __________ method.(a) Destructive Testing(b) Nondestructive testing(c) Ring Tension Test(d) Compression TestThis question was addressed to me by my school teacher while I was bunking the class.I'd like to ask this question from Maturity Concept ofConcrete topic in portion Strength of Concrete of Concrete Technology |
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Answer» The CORRECT CHOICE is (b) Nondestructive testing |
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| 24. |
Maximum size of aggregates are used to produce 100MPa compressive strength is __________(a) 20-30 mm(b) 10-20 mm(c) 30-40 mm(d) 40-50 mmThis question was addressed to me in homework.My enquiry is from High Strength Concrete in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct choice is (B) 10-20 mm |
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| 25. |
Which type of aggregates are used to produce 70MPa compressive strength?(a) All in one(b) Fine(c) Coarse(d) FlakyThis question was posed to me in an international level competition.My doubt stems from High Strength Concrete topic in chapter Strength of Concrete of Concrete Technology |
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Answer» Right option is (c) Coarse |
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| 26. |
What is concrete maturity?(a) Concrete strength is directly related to age history(b) Concrete strength is indirectly related to age history(c) Concrete strength is directly related to age and its temperature history(d) Concrete strength is indirectly related to age and its temperature historyThe question was asked by my college professor while I was bunking the class.Query is from Maturity Concept ofConcrete in portion Strength of Concrete of Concrete Technology |
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Answer» Correct answer is (c) CONCRETE strength is directly RELATED to AGE and its temperature history |
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| 27. |
What is the percentage of the accelerator by weight in UHPC?(a) 28.5(b) 4.4(c) 1.2(d) 6.2I got this question during an interview.The doubt is from Ultra High Strength Concrete topic in section Strength of Concrete of Concrete Technology |
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Answer» CORRECT choice is (c) 1.2 The best explanation: 1.2 is the percentage of the accelerator by weight in UHPC according to typical COMPOSITION of DUCTAL. |
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| 28. |
What is the compressive strength for UHPC?(a) 10-20 MPa(b) 60-100 MPa(c) 100-150 MPa(d) >150 MPaI had been asked this question by my school teacher while I was bunking the class.My question is taken from Ultra High Strength Concrete in chapter Strength of Concrete of Concrete Technology |
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Answer» CORRECT CHOICE is (c) 100-150 MPa For EXPLANATION: 28 days COMPRESSIVE strength for UHPC is 100-150MPa and for HPC, it’s 60-100 MPa. |
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| 29. |
The maturity method is a ___________ approach to predict the early age strength gain of concrete.(a) Difficult(b) Convenient(c) Inconvenient(d) There is no such methodI have been asked this question in an online quiz.The question is from Maturity Concept ofConcrete topic in chapter Strength of Concrete of Concrete Technology |
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Answer» CORRECT choice is (B) Convenient The BEST I can EXPLAIN: The maturity method is a convenient approach to predict the early AGE strength gain of concrete, using the principle that the concrete strength is directly related to the hydration temperature history of cementitious paste. |
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| 30. |
Concrete having 28-days compressive strength in the range of 100 to 150 MPa.(a) HPC(b) VHPC(c) OPC(d) HSCThis question was addressed to me in my homework.My doubt is from HPC in portion Strength of Concrete of Concrete Technology |
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Answer» CORRECT answer is (B) VHPC The BEST I can EXPLAIN: Very high performing Concrete having 28-days compressive strength in the range of 100 to 150 MPa. |
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| 31. |
Referring to the graph below, what is the approximate value of strength of 50mm cube in MPa for gel-space ratio .8?(a) 20(b) 40(c) 60(d) 80The question was posed to me in an interview.This intriguing question originated from Gel Space Ratio topic in section Strength of Concrete of Concrete Technology |
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Answer» Correct option is (d) 80 |
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| 32. |
Where the matrix is extremely dense, a weak aggregate may become the weak.(a) True(b) FalseThis question was addressed to me by my college professor while I was bunking the class.I would like to ask this question from Maturity Concept ofConcrete in section Strength of Concrete of Concrete Technology |
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Answer» CORRECT choice is (a) True Explanation: For very high-STRENGTH concrete where the matrix is extremely dense, a WEAK aggregate may become the weak link in concrete strength. |
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| 33. |
HPC is not used in high span bridges.(a) True(b) FalseThis question was addressed to me in unit test.The above asked question is from HPC in division Strength of Concrete of Concrete Technology |
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Answer» Right answer is (b) False |
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| 34. |
The choice of cement for high-strength concrete should not be based only on mortar-cube tests but it should also include tests of compressive strengths of concrete at ___________ days.(a) 28, 56, 91(b) 28, 60, 90(c) 30, 60, 90(d) 30, 45, 60The question was posed to me in an online interview.My question comes from HPC in division Strength of Concrete of Concrete Technology |
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Answer» Right choice is (a) 28, 56, 91 |
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| 35. |
Use of HSC in column __________(a) It increase the size of the column(b) It decrease the size of the column(c) Doesn’t affect(d) Decrease the strengthI had been asked this question during an interview for a job.Question is from High Strength Concrete in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct option is (b) It decrease the SIZE of the column |
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| 36. |
What is the percentage of steel fibre by weight in UHPC?(a) 28.5(b) 4.4(c) 1.2(d) 6.2This question was addressed to me in final exam.The doubt is from Ultra High Strength Concrete topic in portion Strength of Concrete of Concrete Technology |
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Answer» Right option is (d) 6.2 |
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| 37. |
In bridges, HSC is used.(a) True(b) FalseThis question was addressed to me in a job interview.Query is from High Strength Concrete topic in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct option is (a) True |
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| 38. |
What unit is present with the 240?(a) Pa(b) MPa(c) GPa(d) KPaThis question was addressed to me during an interview.Question is from Gel Space Ratio topic in section Strength of Concrete of Concrete Technology |
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Answer» CORRECT answer is (b) MPa The best I can explain: During POWER’s experiment, the intrinsic STRENGTH of the GEL was comes out to be 240MPa. |
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| 39. |
What does 240 in power’s experiment stand for?(a) Gel space ratio(b) Water cement ratio(c) Intrinsic strength of gel(d) Extrinsic strength of gelThe question was asked by my college professor while I was bunking the class.This key question is from Gel Space Ratio in portion Strength of Concrete of Concrete Technology |
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Answer» Right choice is (c) Intrinsic STRENGTH of gel |
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| 40. |
What is the approximate quantity of water in M10?(a) 60L(b) 45L(c) 34L(d) 85LThis question was addressed to me in an internship interview.Enquiry is from Water Cement Ratio in chapter Strength of Concrete of Concrete Technology |
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Answer» The correct answer is (c) 34L |
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| 41. |
What is the approximate quantity of water in M7?(a) 60L(b) 45L(c) 34L(d) 85LThe question was asked in a job interview.The above asked question is from Water Cement Ratio topic in section Strength of Concrete of Concrete Technology |
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Answer» CORRECT OPTION is (B) 45L Easy explanation: The approximate quantity of water in grade M7 is NEARLY equal to 45 liters. |
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| 42. |
What is the range of water in M20?(a) 34-36L(b) 29-32L(c) 26-30L(d) 21-27LI had been asked this question in exam.My query is from Water Cement Ratio in chapter Strength of Concrete of Concrete Technology |
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| 43. |
Water cement ratio is ______(a) Volume of water to the volume of cement(b) Volume of water to the volume of concrete(c) Volume of concrete to the volume of cement(d) Volume of water to the volume of aggregatesThe question was posed to me at a job interview.This is a very interesting question from Water Cement Ratio in portion Strength of Concrete of Concrete Technology |
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Answer» The correct ANSWER is (a) Volume of WATER to the volume of cement |
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| 44. |
Gel/Space ratio = x = Volume of gel / Space available = 0.657 C / 0.319 C+ Wo. Here Wo stands for?(a) Weight of cement in kg(b) Weight of cement in g(c) Volume of gel(d) Volume of mixing water in mlThe question was asked by my school principal while I was bunking the class.This intriguing question originated from Gel Space Ratio topic in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct answer is (d) Volume of MIXING water in ml |
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| 45. |
What is the range of water in M25?(a) 34-36L(b) 29-32L(c) 26-30L(d) 21-27LThis question was addressed to me in an international level competition.This intriguing question comes from Water Cement Ratio in chapter Strength of Concrete of Concrete Technology |
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Answer» Correct ANSWER is (d) 21-27L |
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| 46. |
Gel/Space ratio = x = Volume of gel / Space available = 0.657 C / 0.319 C+ Wo. Here C stands for?(a) Weight of cement in kg(b) Weight of cement in g(c) Volume of gel(d) Volume of mixing water in mlThis question was addressed to me by my school principal while I was bunking the class.Question is from Gel Space Ratio in portion Strength of Concrete of Concrete Technology |
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Answer» CORRECT CHOICE is (B) Weight of cement in g Explanation: ACCORDING to Power and his experiment, the C is the weight of cement in grams. |
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| 47. |
What does x^3 in power’s experiment stands for?(a) Gel space ratio(b) Water cement ratio(c) Intrinsic strength of gel(d) Extrinsic strength of gelI had been asked this question in semester exam.I would like to ask this question from Gel Space Ratio topic in chapter Strength of Concrete of Concrete Technology |
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Answer» The correct CHOICE is (a) GEL space ratio |
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| 48. |
What is the gel/space ratio?(a) Volume of water to the volume of cement(b) Volume of the hydrated cement paste to the sum of volumes of the hydrated cement(c) Volume of the hydrated cement paste to the sum of volumes of the hydrated cement and of the capillary pores(d) Volume of gel to the volume of space present in the concreteThe question was posed to me in an interview.My question is from Gel Space Ratio in section Strength of Concrete of Concrete Technology |
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| 49. |
According to figure, what is the approximate value of strength of 50mm cube in MPa for gel-space ratio .6?(a) 20(b) 40(c) 60(d) 80The question was posed to me by my school teacher while I was bunking the class.This is a very interesting question from Gel Space Ratio topic in division Strength of Concrete of Concrete Technology |
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Answer» The correct choice is (b) 40 |
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| 50. |
What is the range of water in M10?(a) 34-36L(b) 29-32L(c) 26-30L(d) 21-27LThe question was posed to me in an interview for job.The question is from Water Cement Ratio topic in chapter Strength of Concrete of Concrete Technology |
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