53 + Interview Questions in Types Of Cement And Testing Of Cement in Concrete Technology Page 1 InterviewSolution

1.	Loss on Ignition (L.O.I.) is the loss in weight of cement after being heated to _____________(a) 1000°C(b) 100°C(c) 500°C(d) 1500°CI had been asked this question during a job interview.The doubt is from Chemical Composition Test in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» RIGHT ANSWER is (a) 1000°C The best explanation: It INDICATES the prehydration or carbonation due to prolonged or improper STORAGE of cement & clinker.

Discussion

2.	What is the capacity of a measuring cylinder?(a) 10ml(b) 50ml(c) 100ml(d) 1000mlI got this question in an international level competition.This is a very interesting question from Setting Time Test in division Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct CHOICE is (c) 100ml The BEST I can explain: The capacity of the MEASURING cylinder is 100 ml with the least count of 1 ml for the setting time test.

Discussion

3.	What is the initial setting time?(a) The time at which cement paste loses its plasticity(b) The time at which cement paste loses its elasticity(c) The time at which cement paste gains its plasticity(d) The time at which cement paste gains its elasticityThis question was posed to me by my college professor while I was bunking the class.I need to ask this question from Setting Time Test in division Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT ANSWER is (a) The TIME at which cement paste loses its plasticity To EXPLAIN I would say: The time at which cement paste loses its plasticity is known as initial SETTING time of the concrete.

Discussion

4.	In the soundness test a specimen of hardened cement paste is ___ for a fixed time.(a) Freeze(b) Dry(c) Boiled(d) Dipped in waterThis question was posed to me during an interview for a job.I'd like to ask this question from Testing of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» CORRECT option is (c) Boiled The best EXPLANATION: A specimen of hardened cement PASTE is boiled for a FIXED time so that if there is any TENDENCY of increase or decrease in size can be detected.

Discussion

5.	Initial setting time of Low Heat Cement should not be less than _____________(a) 15 minutes(b) 30 minutes(c) 60 minutes(d) 1 hourThe question was asked in an online quiz.My query is from Setting Time Test in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT option is (c) 60 minutes Explanation: As PER IS specification, the minimum INITIAL SETTING time is 60 minutes for low heat cement.

Discussion

6.	Which cement is used for mainly building construction where strength required with age?(a) Rapid Hardening Cement(b) Low Heat Cement(c) Portland Pozzolana Cement(d) Quick Setting CementThis question was addressed to me in an interview for job.My question is based upon Applications of Types of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

7.	If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is final setting time?(a) t2-t1(b) t2+t1(c) t3-t1(d) 2*t1I had been asked this question during an interview for a job.The question is from Setting Time Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct CHOICE is (c) t3-t1 Explanation: t3-t1 is the FORMULA to determine the value of the FINAL setting time of CONCRETE for further PROCESS.

Discussion

8.	In cement hardening process ___________ instants are very important.(a) 1(b) 2(c) 3(d) 4The question was asked in an internship interview.My query is from Setting Time Test topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT option is (b) 2 To explain I would SAY: In cement hardening process, two instants are very IMPORTANT, i.e. initial setting and FINAL setting.

Discussion

9.	Which of the following option is correct?(a) Standard consistency (%) = (wt of water added/ wt of cement) 100(b) Standard consistency (%) = (wt of water added- wt of cement) 100(c) Standard consistency = (wt of water added/ wt of cement) 100(d) Standard consistency (%) = (wt cement/ wt of water) 100I had been asked this question by my school principal while I was bunking the class.Origin of the question is Standard Consistency Test in section Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct option is (a) Standard consistency (%) = (wt of water added/ wt of CEMENT) *100 Easiest explanation: To DETERMINE the standard consistency, we NEED to divide the weight of water to cement and then multiply it with 100 to get the percentage of standard consistency.

Discussion

10.	After placing each layer in a slump cone, the concrete in the cone is tapped to remove remaining voids.(a) True(b) FalseI have been asked this question in exam.My question is taken from Testing of Cement topic in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct ANSWER is (a) True The EXPLANATION is: It is good to remove the voids from the concrete to increase its strength. THEREFORE, TAPPING is needed to remove the remaining voids from the slump CONE.

Discussion

11.	Which cement used in frost resistance concrete?(a) OPC(b) PPC(c) AEC(d) QSCThis question was addressed to me during an interview.Origin of the question is Applications of Types of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» Right option is (C) AEC To ELABORATE: It is USED to fill up the GAP in concrete which are produced by excessive AMOUNT of water during casting (later evaporated and leave the gap).

Discussion

12.	What is standard consistency?(a) Consistency which permits the Vicat’s plunger(b) Ability of cement to maintain a constant volume(c) Durability in sea water(d) Free lime contentThe question was asked during a job interview.I would like to ask this question from Standard Consistency Test in section Types of Cement and Testing of Cement of Concrete Technology
Answer» CORRECT answer is (a) Consistency which permits the VICAT’s plunger Best explanation: Standard consistency of cement PASTE may be DEFINED as the consistency which permits the Vicat’s plunger (10 mm, 40 to 50 mm in length) to penetrate to a point 5 mm to 7 mm from the bottom ( or 35 mm to 33 mm from top) of Vicat mould.

Discussion

13.	Which cement is used to create bond with old concrete surface?(a) Rapid Hardening Cement(b) Expansive Cement(c) Sulphate Resisting Cement(d) Low Heat CementThis question was posed to me in an online quiz.I would like to ask this question from Applications of Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» CORRECT option is (b) Expansive Cement Easy explanation: As the name suggests, it EXPANDS and increases in VOLUME while SETTLED. It is used to AVOID shrinkage of concrete.

Discussion

14.	When concrete is to be laid under water ___________ is to used.(a) Rapid Hardening Cement(b) Ordinary Portland Cement(c) Quick Setting Cement(d) Low Heat CementI had been asked this question during an interview for a job.Asked question is from Types of Cement topic in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT option is (c) Quick Setting CEMENT The explanation: When concrete is to be laid under water, quick setting cement is to used. This cement is MANUFACTURED by ADDING small percentage of aluminum sulphate (AL2SO4) which accelerates the setting action.

Discussion

15.	C3 S and C2S require approximately the _____________ amount of water for hydration.(a) Same(b) More(c) Less(d) Depends on the pasteI got this question in my homework.My doubt stems from Chemical Composition Test topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» Right OPTION is (a) Same To explain I would say: C3S and C2S require approximately the same amount of WATER for HYDRATION, but C3S produces more than twice as much CA(OH)2 as is formed by the hydration of C2S.

Discussion

16.	To measure the concrete temperature, the stem of the thermometer must be kept by at least ___ inches of concrete.(a) 1(b) 2(c) 3(d) 4I got this question in class test.I'd like to ask this question from Testing of Cement in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct ANSWER is (c) 3 Explanation: The STEM of the thermometer should be surrounded by at least 3 inches of the CONCRETE for better reading.

Discussion

17.	For making cement paste, what is the amount of water we need?(a) 25% water by weight of dry cement(b) 30% water by weight of dry cement(c) 78% water by weight of dry cement(d) 80% water by weight of dry cementThe question was asked in an interview.Asked question is from Standard Consistency Test in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Right choice is (a) 25% water by weight of dry cement To explain I would SAY: 25% water by weight of dry cement thoroughly to GET a cement paste. Total time TAKEN to obtain thoroughly mixed water cement paste.

Discussion

18.	How many layers of concrete are placed to fill a slump cone?(a) 5 layers(b) 3 equal layers by volume(c) 3 equal layers by height(d) 5 layers by volumeThis question was posed to me in an online interview.The origin of the question is Testing of Cement topic in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct OPTION is (B) 3 equal layers by volume To elaborate: Fill the mold 12 inches high in the shape of the frustum of a cone that is 8 inches in diameter at the BOTTOM and 4 inches in diameter at the top. Then fill it in three equal layers by volume, not by height.

Discussion

19.	Which cement is used for artificial marble?(a) Rapid Hardening Cement(b) Sulphate Resisting Cement(c) Coloured Cement(d) Quick Setting CementI had been asked this question by my school principal while I was bunking the class.Query is from Applications of Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct choice is (c) COLOURED CEMENT Easy explanation: As the NAME suggests, it is used where coloured cement REQUIRED for any AESTHETIC purposes.

Discussion

20.	In the soundness test, the whole assembly is immersed in water for _______(a) 30 minutes(b) 1 hour(c) 24 hours(d) 48 hoursThis question was addressed to me by my school teacher while I was bunking the class.My question comes from Setting Time Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct choice is (c) 24 hours Best explanation: Submerge the WHOLE ASSEMBLY immediately in WATER at a temperature of 27^oC ±2^oC and keep it there for 24 HOUR for better results.

Discussion

21.	Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite.(a) C4AF(b) CF4(c) SO3(d) CaOI have been asked this question in a national level competition.The doubt is from Chemical Composition Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» Right OPTION is (a) C4AF To explain: C4AF work as flux material and also it accelerates the HYDRATION of SILICATES. C4AF hydrates to tricalcium ALUMINATE hydrate and calcium ferrite CaO.Fe2O3 in amorphous form.

Discussion

22.	Final setting time of cement should not be more than _______(a) 1 hour(b) 2 hours(c) 5 hours(d) 10 hoursThe question was asked by my school principal while I was bunking the class.This interesting question is from Setting Time Test in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct OPTION is (d) 10 hours To explain I would SAY: As per IS SPECIFICATION, the MAXIMUM final SETTING time for all type of cement is 10 hours.

Discussion

23.	If L1=Measurement taken after 24 hours of immersion in water at a temp. of 27 ± 20^oC and L2=Measurement taken after 3 hours of immersion in water at boiling temperature. Then what is soundness of cement?(a) L1+L2(b) L1/L2(c) L1-L2(d) L1*L2I had been asked this question in a national level competition.Question is taken from Testing of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT choice is (c) L1-L2 For explanation: L1-L2 is the FORMULA to calculate the soundness of CEMENT. First take the reading after immersion in water then MEASURE it after 3 hours of immersion in boiling water.

Discussion

24.	____ cement is used for formwork that can be removed earlier and reused in other areas which save the cost of formwork.(a) Rapid Hardening Cement(b) Colored Cement(c) High Alumina Cement(d) Low Heat CementThis question was posed to me by my college professor while I was bunking the class.The query is from Applications of Types of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct answer is (a) Rapid HARDENING Cement Easy explanation: Rapid hardening cement is used where the formwork can be removed earlier and reused in other areas which save the cost of formwork. This cement can be used in PREFABRICATED CONCRETE construction, road WORKS, etc.

Discussion

25.	C4AF is not a true compound.(a) True(b) FalseThis question was posed to me in an internship interview.I would like to ask this question from Chemical Composition Test topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct answer is (a) TRUE To ELABORATE: C4AF is not a true compound. The FERRITE phase ranges from C2AF to C6AF. *C4AF represents an average.

Discussion

26.	What is the final setting time?(a) The time at which cement paste loses its plasticity(b) The time to reach that stage at which cement paste loses its elasticity(c) The time at which cement paste gains its plasticity(d) The time when cement paste becomes hardenedI have been asked this question at a job interview.I'm obligated to ask this question of Setting Time Test topic in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct option is (a) The TIME at which cement PASTE loses its plasticity Easiest explanation: The final setting is DEFINED as the time TAKEN to reach the cement paste to BECOME into a hardened mass.

Discussion

27.	Which apparatus is generally used to measure the soundness of the cement?(a) Vicat Apparatus(b) Le-Chatelier apparatus(c) Soundness meter(d) Duff Abrams apparatusThis question was addressed to me during an interview.I need to ask this question from Testing of Cement topic in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Right CHOICE is (b) Le-Chatelier APPARATUS Easiest explanation: The apparatus for conducting the Le-Chatelier test should conform to IS: 5514 – 1969. Balance, WHOSE permissible variation at a load of 1000G should be +1.0g and Water bath.

Discussion

28.	What is the amount of water required to give the paste normal consistency for consistency test?(a) .78 times(b) .79 times(c) .77 times(d) .76 timesI have been asked this question by my school teacher while I was bunking the class.My question is based upon Testing of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» Right choice is (a) .78 TIMES Explanation: Prepare a paste by adding 0.78 times the water required to GIVE a paste of STANDARD CONSISTENCY (i.e. 0.78P).

Discussion

29.	Which of the following is correct for Low Heat Cement?(a) Suitable for use in cold weather areas(b) Heat of hydration is reduced by tri calcium aluminate content(c) This cement requires longer period of curing(d) This cement contains high aluminate %age usually between 35-55%.The question was asked by my school teacher while I was bunking the class.Query is from Types of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct option is (b) HEAT of HYDRATION is reduced by tri calcium aluminate content Explanation: In this cement the heat of hydration is reduced by tri calcium aluminate content. It contains less percentage of lime than ordinary port land cement. It is USED for mass concrete works such as dams etc.

Discussion

30.	Portland cement is composed of four major oxides (CaO, SiO2, Al2O3, Fe2O3 ≥90%).(a) True(b) FalseI got this question in class test.Question is from Chemical Composition Test in division Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

31.	The apparatus used are ___ IS Sieve, Balance capable of weighing 10g to the nearest 10mg.(a) 90μm(b) 45μm(c) 22.5μm(d) 14μmThis question was posed to me in an internship interview.My question is taken from Testing of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» Right OPTION is (a) 90μm To explain: The apparatus used are 90μm IS Sieve, Balance capable of WEIGHING 10g to the nearest 10MG, A nylon or PURE bristle brush, preferably with 25 to 40mm, bristle, for cleaning the sieve.

Discussion

32.	Which cement is mainly used for interior and exterior decorative works?(a) Rapid Hardening Cement(b) Colored Cement(c) High Alumina Cement(d) Low Heat CementThe question was asked during an interview.My query is from Applications of Types of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

33.	When the cement paste is tested within the gauging time. Here what is the value of gauging time?(a) 3 to 5 minutes(b) 3 to 5 hours(c) 24 minutes(d) 24 hoursThis question was addressed to me in semester exam.I want to ask this question from Standard Consistency Test topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

34.	How many times in each layer of concrete rodded in a slump cone?(a) 75(b) 25(c) 12 to 15(d) 35 to 65I got this question during an online interview.My question comes from Testing of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct OPTION is (B) 25 Easy explanation: Each TIME, each layer is tamped 25 times with a 2 ft (600 mm)-long bullet-nosed METAL ROD measuring 5/8 in (16 mm) in diameter.

Discussion

35.	Which cement is used for the construction of water-retaining structure like tanks, reservoirs, retaining walls, swimming pools, dams, bridges, piers etc?(a) Waterproof Portland cement(b) Colored Cement(c) High Alumina Cement(d) Low Heat CementI got this question by my school principal while I was bunking the class.Query is from Applications of Types of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» CORRECT CHOICE is (a) Waterproof Portland CEMENT The explanation: This cement is prepared by mixing with OPC or RAPID hardening cement with a small percentage of some metal stearates at the time of mixing.

Discussion

36.	Which cement contains high percentage of C3S and less percentage of C2S?(a) Rapid Hardening Cement(b) Ordinary Portland Cement(c) Quick Setting Cement(d) Low Heat CementI have been asked this question by my school teacher while I was bunking the class.This is a very interesting question from Types of Cement in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT choice is (a) Rapid Hardening CEMENT Easiest explanation: This cement contains high PERCENTAGE of C3S and less percentage of C3S. This is infact high early strength cement.

Discussion

37.	If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is initial setting time?(a) t2-t1(b) t2+t1(c) t3-t1(d) 2*t1The question was posed to me during a job interview.My question is from Setting Time Test in division Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct choice is (a) t2-t1 For explanation: t2-t1 is the FORMULA to DETERMINE the value of the initial SETTING time of concrete for further PROCESS.

Discussion

38.	Whydo we need Standard Consistency Test?(a) To determine the quality of cement(b) To determine the quality of water(c) To determine the quality of mixed concrete(d) To determine the strength of concrete blockThis question was addressed to me during an interview for a job.This is a very interesting question from Standard Consistency Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct OPTION is (b) To determine the quality of water The best explanation: This test is PERFORMED to determine the quantity of water required to PRODUCE a cement paste of STANDARD or normal CONSISTENCY.

Discussion

39.	Which cement is used in sewage and water treatment plants?(a) Rapid Hardening Cement(b) Low Heat Cement(c) Sulphate Resisting Cement(d) Quick Setting CementThe question was posed to me in a job interview.I want to ask this question from Applications of Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

40.	Which chemical compostion has highest content in OPC?(a) Alumina(b) Silica(c) Lime(d) Iron OxideThis question was posed to me in a national level competition.This interesting question is from Types of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct option is (c) Lime Best EXPLANATION: Lime forms nearly two-third (2/3) of the CEMENT. Therefore sufficient QUANTITY of the lime must be in the RAW MATERIALS for the manufacturing of cement.

Discussion

41.	Standard consistency of cement is tested by ___________(a) Vicat apparatus(b) Le Chatalier apparatus(c) Soundness meter(d) Duff Abrams apparatusI got this question during an interview.My question comes from Standard Consistency Test topic in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Right option is (a) VICAT apparatus Easy EXPLANATION: The standard CONSISTENCY of a cement PASTE is defined as that consistency which will allow the vicat’s plunger to penetrate to a point 5 to 7mm from the BOTTOM of the vicat mould.

Discussion

42.	Which cement is used to store for longer duration in wet climatic conditions?(a) Expansive Cement(b) Ordinary Portland cement(c) Hydrophobic Cement(d) Quick Setting CementThe question was posed to me during an online interview.My question is from Applications of Types of Cement in section Types of Cement and Testing of Cement of Concrete Technology
Answer» RIGHT option is (c) Hydrophobic Cement Easy explanation: This type of cement is manufactured by MIXING ADMIXTURES like petrolatum, napthalene soap which forms layer and ACT as WATER repellent.

Discussion

43.	Insoluble Residue mainly comes from which compound?(a) Lime(b) Soda(c) Silica(d) AluminaThe question was asked in an interview.Enquiry is from Chemical Composition Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct choice is (c) Silica To ELABORATE: INSOLUBLE Residue is that fraction of cement which is insoluble in HCL. It comes mainly from the silica which has not reacted to form compounds during the burning process in the KILN.

Discussion

44.	Initial setting time of OPC should not be less than ___________(a) 15 minutes(b) 30 minutes(c) 28 minutes(d) 1 hourI got this question during a job interview.The doubt is from Setting Time Test in chapter Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct option is (B) 30 MINUTES The best EXPLANATION: As per IS specification, the minimum INITIAL SETTING time is 30 minutes for ordinary portland cement.

Discussion

45.	What is the normal consistency for OPC?(a) 26 to 33%(b) 20 to 35%(c) 26 to 50%(d) 33 to 55%This question was posed to me in an online interview.Asked question is from Standard Consistency Test in division Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct answer is (a) 26 to 33% EASY EXPLANATION: For a cement paste the standard CONSISTENCY is MEASURED by FLOW table test which ranges from 26 to 33%.

Discussion

46.	The relative humidity of laboratory should be ___________ for standard consistency.(a) 65 ± 5%(b) 27 ± 2%(c) 50 ± 5%(d) 45 ± 10I got this question in quiz.My question is taken from Standard Consistency Test topic in division Types of Cement and Testing of Cement of Concrete Technology
Answer» Right CHOICE is (a) 65 ± 5% To explain: Unless otherwise SPECIFIED this test SHALL be conducted at a TEMPERATURE 27 + 20 C and the relative humidity of laboratory should be 65 + 5%.

Discussion

47.	How many moulds required for the compression strength test of cement?(a) 1(b) 2(c) 3(d) 4The question was posed to me by my college professor while I was bunking the class.The origin of the question is Standard Consistency Test topic in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» The CORRECT choice is (c) 3 Best explanation: In this test, three moulds of (face AREA 50 cm^2) are prepared and cured under standardtemperature conditions and each cube tested by placing it between movable JAWS of the COMPRESSIVE strength TESTING machine.

Discussion

48.	Which compound gives the colour to the cement?(a) Lime(b) Silica(c) Iron Oxide(d) AluminaI had been asked this question during an internship interview.Query is from Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology
Answer» Correct CHOICE is (c) Iron Oxide The explanation is: Iron oxide PIGMENTS are in the FORM of particles RANGING approximately from 0.1 to 1.0 micron. The difference in color between one pigment and another is DUE to the shape and surface structure of the particle.

Discussion

49.	Silica in excess causes ________(a) The cement to set slowly(b) The cement to set quickly(c) The cement to expand(d) The cement to disintegrateI had been asked this question by my school teacher while I was bunking the class.This is a very interesting question from Types of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology
Answer» The correct OPTION is (a) The cement to SET slowly To elaborate: SILICA gives strength to the cement. Silica in excess CAUSES the cement to set slowly.

Discussion

50.	Calculate standard consistency(%) when 100 ml of water is added in 1000 g of cement.(a) 10(b) 1000(c) 100(d) 1The question was asked in quiz.This intriguing question comes from Standard Consistency Test in portion Types of Cement and Testing of Cement of Concrete Technology
Answer»

Discussion

Explore topic-wise InterviewSolutions in .

What is the capacity of a measuring cylinder?(a) 10ml(b) 50ml(c) 100ml(d) 1000mlI got this question in an international level competition.This is a very interesting question from Setting Time Test in division Types of Cement and Testing of Cement of Concrete Technology

Initial setting time of Low Heat Cement should not be less than _____________(a) 15 minutes(b) 30 minutes(c) 60 minutes(d) 1 hourThe question was asked in an online quiz.My query is from Setting Time Test in section Types of Cement and Testing of Cement of Concrete Technology

In cement hardening process ___________ instants are very important.(a) 1(b) 2(c) 3(d) 4The question was asked in an internship interview.My query is from Setting Time Test topic in division Types of Cement and Testing of Cement of Concrete Technology

After placing each layer in a slump cone, the concrete in the cone is tapped to remove remaining voids.(a) True(b) FalseI have been asked this question in exam.My question is taken from Testing of Cement topic in portion Types of Cement and Testing of Cement of Concrete Technology

Which cement used in frost resistance concrete?(a) OPC(b) PPC(c) AEC(d) QSCThis question was addressed to me during an interview.Origin of the question is Applications of Types of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology

C3 S and C2S require approximately the _____________ amount of water for hydration.(a) Same(b) More(c) Less(d) Depends on the pasteI got this question in my homework.My doubt stems from Chemical Composition Test topic in division Types of Cement and Testing of Cement of Concrete Technology

To measure the concrete temperature, the stem of the thermometer must be kept by at least ___ inches of concrete.(a) 1(b) 2(c) 3(d) 4I got this question in class test.I'd like to ask this question from Testing of Cement in portion Types of Cement and Testing of Cement of Concrete Technology

Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite.(a) C4AF(b) CF4(c) SO3(d) CaOI have been asked this question in a national level competition.The doubt is from Chemical Composition Test in chapter Types of Cement and Testing of Cement of Concrete Technology

C4AF is not a true compound.(a) True(b) FalseThis question was posed to me in an internship interview.I would like to ask this question from Chemical Composition Test topic in section Types of Cement and Testing of Cement of Concrete Technology

Portland cement is composed of four major oxides (CaO, SiO2, Al2O3, Fe2O3 ≥90%).(a) True(b) FalseI got this question in class test.Question is from Chemical Composition Test in division Types of Cement and Testing of Cement of Concrete Technology

The apparatus used are ___ IS Sieve, Balance capable of weighing 10g to the nearest 10mg.(a) 90μm(b) 45μm(c) 22.5μm(d) 14μmThis question was posed to me in an internship interview.My question is taken from Testing of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology

How many times in each layer of concrete rodded in a slump cone?(a) 75(b) 25(c) 12 to 15(d) 35 to 65I got this question during an online interview.My question comes from Testing of Cement topic in division Types of Cement and Testing of Cement of Concrete Technology

Which chemical compostion has highest content in OPC?(a) Alumina(b) Silica(c) Lime(d) Iron OxideThis question was posed to me in a national level competition.This interesting question is from Types of Cement topic in section Types of Cement and Testing of Cement of Concrete Technology

Insoluble Residue mainly comes from which compound?(a) Lime(b) Soda(c) Silica(d) AluminaThe question was asked in an interview.Enquiry is from Chemical Composition Test in chapter Types of Cement and Testing of Cement of Concrete Technology

Initial setting time of OPC should not be less than ___________(a) 15 minutes(b) 30 minutes(c) 28 minutes(d) 1 hourI got this question during a job interview.The doubt is from Setting Time Test in chapter Types of Cement and Testing of Cement of Concrete Technology

What is the normal consistency for OPC?(a) 26 to 33%(b) 20 to 35%(c) 26 to 50%(d) 33 to 55%This question was posed to me in an online interview.Asked question is from Standard Consistency Test in division Types of Cement and Testing of Cement of Concrete Technology

The relative humidity of laboratory should be ___________ for standard consistency.(a) 65 ± 5%(b) 27 ± 2%(c) 50 ± 5%(d) 45 ± 10I got this question in quiz.My question is taken from Standard Consistency Test topic in division Types of Cement and Testing of Cement of Concrete Technology

Which compound gives the colour to the cement?(a) Lime(b) Silica(c) Iron Oxide(d) AluminaI had been asked this question during an internship interview.Query is from Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology

Calculate standard consistency(%) when 100 ml of water is added in 1000 g of cement.(a) 10(b) 1000(c) 100(d) 1The question was asked in quiz.This intriguing question comes from Standard Consistency Test in portion Types of Cement and Testing of Cement of Concrete Technology