MCQOPTIONS
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MCQOPTIONS
This section includes 104 Mcqs, each offering curated multiple-choice questions to sharpen your Highway Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the total grades of cement specified by IRC? |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 12 |
| Answer» D. 12 | |
| 2. |
What is the most commonly used grade of cement? |
| A. | 33 |
| B. | 43 |
| C. | 53 |
| D. | 63 |
| Answer» D. 63 | |
| 3. |
The property of cement by which it doesn’t expand is called __________ |
| A. | Fineness |
| B. | Soundness |
| C. | Setting time |
| D. | Consistency |
| Answer» C. Setting time | |
| 4. |
The volume of water in soundness test is? |
| A. | 0.6p |
| B. | 0.7p |
| C. | 0.78p |
| D. | 0.8p |
| Answer» D. 0.8p | |
| 5. |
The volume of water in setting time test is? |
| A. | 0.78p |
| B. | 0.75p |
| C. | 0.85p |
| D. | 0.95p |
| Answer» D. 0.95p | |
| 6. |
What is the first test to be done for determining any property of cement? |
| A. | Consistency |
| B. | Setting time |
| C. | Soundness |
| D. | Fineness |
| Answer» B. Setting time | |
| 7. |
The initial setting time of cement is not less than __________ |
| A. | 30 seconds |
| B. | 300 seconds |
| C. | 30 minutes |
| D. | 300 minutes |
| Answer» D. 300 minutes | |
| 8. |
The density of cement in Kg/m3 is __________ |
| A. | 1440 |
| B. | 1240 |
| C. | 1340 |
| D. | 1540 |
| Answer» B. 1240 | |
| 9. |
The specific gravity of cement is __________ |
| A. | 2.5 |
| B. | 1.44 |
| C. | 3.15 |
| D. | 30 |
| Answer» E. | |
| 10. |
Cement specific gravity is measured by __________ |
| A. | Water |
| B. | Kerosene |
| C. | Oil |
| D. | Petrol |
| Answer» C. Oil | |
| 11. |
The cement on touching should give __________ |
| A. | Cool feeling |
| B. | Hot feeling |
| C. | neutral |
| D. | Very cool feeling |
| Answer» B. Hot feeling | |
| 12. |
The waste material mostly used in pavement is __________ |
| A. | Fly ash |
| B. | GGBS |
| C. | Rice husk |
| D. | Soil |
| Answer» B. GGBS | |
| 13. |
The cement used in water logged areas is __________ |
| A. | Portland cement |
| B. | Hydrophobic cement |
| C. | Quick setting cement |
| D. | Reediest cement |
| Answer» C. Quick setting cement | |
| 14. |
What is the minimum grade of concrete in CC pavement? |
| A. | M20 |
| B. | M30 |
| C. | M40 |
| D. | M50 |
| Answer» D. M50 | |
| 15. |
Air permeability test of cement it conducted to find the _____ |
| A. | unsoundness |
| B. | ignition loss |
| C. | specific gravity |
| D. | fineness |
| Answer» E. | |
| 16. |
Fineness of cement is measured in the units of: |
| A. | Volume / mass |
| B. | Mass / Volume |
| C. | Area / Mass |
| D. | Mass / Area |
| Answer» D. Mass / Area | |
| 17. |
Loss on ignition in Portland cement shall not be greater than |
| A. | 4% |
| B. | 5.5% |
| C. | 6% |
| D. | 3.5% |
| Answer» B. 5.5% | |
| 18. |
53 grade OPC cement lying in bag storage at local vendor should be tested before it’s use, if the period of storage is more than |
| A. | 9 months |
| B. | 3 months |
| C. | 1 year |
| D. | 2 year |
| Answer» C. 1 year | |
| 19. |
Calcareous material used in the manufacture of cement consists of: |
| A. | Lime stone |
| B. | Chalk |
| C. | Shells |
| D. | All of these |
| Answer» E. | |
| 20. |
Cement and water when poured into the form work for hardening normally takes ________ days to acquire fixed properties. |
| A. | 7 |
| B. | 14 |
| C. | 21 |
| D. | 28 |
| Answer» E. | |
| 21. |
Ordinary Portland cement is ______ cement. |
| A. | Type 2 |
| B. | Type 3 |
| C. | Type 1 |
| D. | Type 4 |
| Answer» D. Type 4 | |
| 22. |
In which of the following test of cement air permeability method is used? |
| A. | Strength test |
| B. | Slump test |
| C. | Fineness test |
| D. | Durability test |
| Answer» D. Durability test | |
| 23. |
Match List-I with List-II and choose the correct answer from the options given below. List-I List-IIA. Water and Cement a. Fast in Reaction B. Tri Calcium Silicateb. Slow in ReactionC. Di-Calcium silicatec. Slowest in Reaction D. Tri Calcium Aluminate d. Hydrates |
| A. | A - d, B - a, C - b, D - c |
| B. | A - d, B - b, C - c, D – a |
| C. | A - c, B - b, C - a, D - d |
| D. | A - a, B - c, C - b, D - d |
| Answer» C. A - c, B - b, C - a, D - d | |
| 24. |
Colored cement (white cement) consists of_______ percentage of pigment. |
| A. | 2 to 4 |
| B. | 8 to 12 |
| C. | 4 to 10 |
| D. | 5 to 10 |
| Answer» E. | |
| 25. |
One bag of Portland cement, 50 kg in weight, would normally have a bulk volume of |
| A. | 30 l |
| B. | 35 l |
| C. | 40 l |
| D. | 45 l |
| Answer» C. 40 l | |
| 26. |
Hydration of which compound is responsible for an increase in strength of cement in later age? |
| A. | Tri-calcium Aluminate (C3A) |
| B. | Tetra-calcium Aluminoferrite (C4AF) |
| C. | Tri-calcium Silicate (C3S) |
| D. | Di-calcium Silicate (C2S) |
| Answer» E. | |
| 27. |
According to IS 8041 - 1990, the minimum specific surface area (by Blaine's air permeability method) required for rapid hardening Portland cement is: |
| A. | 3250 cm2/g |
| B. | 3200 cm2/g |
| C. | 3500 cm2/g |
| D. | 2250 cm2/g |
| Answer» B. 3200 cm2/g | |
| 28. |
Quick setting cement is produced by adding: |
| A. | More amount of gypsum in very fine powdered form |
| B. | Pozzolana is very fine powdered form |
| C. | Less amount of gypsum in very fine powdered form |
| D. | Aluminium sulphate in very fine powdered form |
| Answer» D. Aluminium sulphate in very fine powdered form | |
| 29. |
Gypsum is added in the manufacture of Portland cement in order to |
| A. | shorten the setting time of cement |
| B. | lengthen the setting time of cement |
| C. | decrease the burning temperature |
| D. | decrease the grinding time |
| Answer» C. decrease the burning temperature | |
| 30. |
In testing setting time of cement a needle of |
| A. | 1 mm square section is used |
| B. | 1 mm diameter is used |
| C. | 2 mm square section is used |
| D. | 5 mm square section is used |
| Answer» B. 1 mm diameter is used | |
| 31. |
Increase in fineness of cement results in? |
| A. | increase in the rate of hydration |
| B. | change in the total amount of heat liberated |
| C. | decrease in the rate of heat of hydration |
| D. | Both 1 and 2 |
| Answer» B. change in the total amount of heat liberated | |
| 32. |
Consider the following statements:1) Hydrophobic cement grains possess the low wetting ability2) Rapid-hardening cement is useful in concreting under static, or running water3) Quick-setting cement helps the concrete to attain high strength in the initial period4) White cement is just a variety of ordinary cement-free of coloring oxides.Which of the above statements are correct? |
| A. | 1 and 4 only |
| B. | 1 and 3 only |
| C. | 2 and 4 only |
| D. | 2 and 3 only |
| Answer» B. 1 and 3 only | |
| 33. |
On increasing the water-cement ratio, strength of cement paste: _______. |
| A. | Increases |
| B. | Decreases |
| C. | May increase or decrease |
| D. | Doesn't change |
| Answer» C. May increase or decrease | |
| 34. |
Deficiency of which of the following oxide causes reduction in setting time of cement |
| A. | CaO |
| B. | Al2O3 |
| C. | Fe2O3 |
| D. | MgO |
| Answer» B. Al2O3 | |
| 35. |
During the process of hydration of cement, due to increase in Dicalcium Silicate (C2S) content in cement clinker, the heat of hydration |
| A. | increases |
| B. | decreases |
| C. | intially decreases and then increases |
| D. | does not change |
| Answer» C. intially decreases and then increases | |
| 36. |
Di-calcium silicate (C2S): |
| A. | Hydrates rapidly. |
| B. | Generates less heat of hydration. |
| C. | Hardens rapidly. |
| D. | Has less resistance to sulphate attack. |
| Answer» C. Hardens rapidly. | |
| 37. |
Fineness of cement can be found using: |
| A. | Le Chatelier apparatus |
| B. | Blaine's air permeability method |
| C. | Vicat mould |
| D. | Autoclave test |
| E. | L-box test |
| Answer» C. Vicat mould | |
| 38. |
As per IS specifications, what should be the maximum final setting time for ordinary Portland cement? |
| A. | 30 minutes |
| B. | 10 hours |
| C. | 1 hour |
| D. | 6 hours |
| Answer» C. 1 hour | |
| 39. |
According to IS4031 (Part 5), the set time of cement is measured at |
| A. | Room temperature and humidity |
| B. | 25-29 degree C and 90-100% Rel. humidity |
| C. | 23-27 degree C and 95% Rel. humidity |
| D. | 25-29 degree C and 60-70% Rel. humidity |
| E. | 25-30 degree C and 65% Rel. humidity |
| Answer» E. 25-30 degree C and 65% Rel. humidity | |
| 40. |
As per IS 4031-1988, the heat of hydration of low-heat Portland cement for 7 days should not be more than______ calories per gram. |
| A. | 90 |
| B. | 100 |
| C. | 65 |
| D. | 120 |
| E. | 160 |
| Answer» D. 120 | |
| 41. |
Gypsum is added in cement to |
| A. | Increase its initial setting time |
| B. | Decrease its initial setting time |
| C. | Increase its compressive strength |
| D. | Increase its bond strength |
| Answer» B. Decrease its initial setting time | |
| 42. |
One of the main demerits in using the lime mortar is that it |
| A. | is not durable |
| B. | does not set quickly |
| C. | swells |
| D. | is plastic |
| Answer» C. swells | |
| 43. |
A sample of cement is said to be sound when it does not contain free |
| A. | Lime |
| B. | Silica |
| C. | Iron oxide |
| D. | Alumina |
| Answer» B. Silica | |
| 44. |
Average percentage of water required by Tri calcium silicate (C3S) for hydration is |
| A. | 24% |
| B. | 21% |
| C. | 23% |
| D. | 22% |
| Answer» B. 21% | |
| 45. |
Portland cement manufactured from pure white chalk and clay but free from iron oxide is known as ___________ |
| A. | Quick setting cement |
| B. | Rapid hardening cement |
| C. | White cement |
| D. | Low heat Portland cement |
| Answer» D. Low heat Portland cement | |
| 46. |
Hydration of cement is a/an ______ action, which produces a large quantity of heat. |
| A. | heat evolution |
| B. | endothermic |
| C. | exothermic |
| D. | all of the above |
| Answer» D. all of the above | |
| 47. |
Ordinary Portland cement should have surface area not less than (in mm2/gm× 102): |
| A. | 2250 |
| B. | 3000 |
| C. | 3250 |
| D. | 4000 |
| Answer» B. 3000 | |
| 48. |
Addition of gypsum to cement: |
| A. | reduces setting time of cement |
| B. | produces very light colour cement |
| C. | increases setting time of cement |
| D. | shining surface is formed |
| Answer» D. shining surface is formed | |
| 49. |
If p is the standard consistency of cement, the amount of water used in conducting the initial setting time test on cement is |
| A. | 0.65 p |
| B. | 0.85 p |
| C. | 0.6 p |
| D. | 0.78 p |
| Answer» C. 0.6 p | |
| 50. |
One bag of cement is equal to |
| A. | 0.0214 cu m |
| B. | 0.0247 cu m |
| C. | 0.034722 cu m |
| D. | 0.0147 cu m |
| Answer» D. 0.0147 cu m | |