MCQOPTIONS
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MCQOPTIONS
This section includes 177 Mcqs, each offering curated multiple-choice questions to sharpen your Building Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A first class brick should have a minimum crushing strength of |
| A. | 7 MN/m2 |
| B. | 10.5 MN/m2 |
| C. | 12.5 MN/m2 |
| D. | 14 MN/m2 |
| Answer» C. 12.5 MN/m2 | |
| 2. |
The type of briek suitable for panal walls for multi-storeyed buildings is |
| A. | hollow bricks |
| B. | perforated bricks |
| C. | either (a) or (b) |
| D. | none of these |
| Answer» D. none of these | |
| 3. |
The hapd hardening Portland cement is obtained by |
| A. | grinding the clinker to a high degree of fineness |
| B. | adding calcium sulphate to the mixture |
| C. | adding gypsum after grinding |
| D. | burning the mixture at a lower temperature |
| Answer» B. adding calcium sulphate to the mixture | |
| 4. |
Sprit varnish consists of |
| A. | spirit and wax |
| B. | spirit and shellac |
| C. | turpentine, spirit and wax |
| D. | turpentine, spirit and shellac |
| Answer» C. turpentine, spirit and wax | |
| 5. |
The specific surface (in cm2/g) of a good Portland cement should not be less than |
| A. | 500 |
| B. | 100 |
| C. | 2250 |
| D. | 3200 |
| Answer» D. 3200 | |
| 6. |
Sandstone consists of |
| A. | quartz and lime |
| B. | quartz and silica |
| C. | quartz, lime and silica |
| D. | silica, lime and alumina |
| Answer» D. silica, lime and alumina | |
| 7. |
The strength of cement concrete increases with |
| A. | increase in the size of aggregate |
| B. | increase in the temperature of water of curing |
| C. | increase in the size of aggreregate |
| D. | all of the above |
| Answer» E. | |
| 8. |
The expansion in Portland cement can be tested by |
| A. | fineness test |
| B. | soundness test |
| C. | setting time test |
| D. | normal consistency test |
| Answer» C. setting time test | |
| 9. |
The bricks after moulding should be dried in |
| A. | open air |
| B. | sun for 3 to 8 days |
| C. | air for 3 to 8 days but not in sun |
| D. | hot air for 3 days |
| Answer» D. hot air for 3 days | |
| 10. |
The commonly used solvent in oil paints is |
| A. | turpentine |
| B. | naptha |
| C. | either (a) or (b) |
| D. | none of these |
| Answer» D. none of these | |
| 11. |
Vicat's apparatus is used to determine the |
| A. | initial setting time of cement |
| B. | final setting time of cement |
| C. | normal consistency of cement |
| D. | all of these |
| Answer» E. | |
| 12. |
Limestone is physically classified as |
| A. | stratified |
| B. | unstratified |
| Answer» B. unstratified | |
| 13. |
The expansion of Portland cement is caused by |
| A. | free lime |
| B. | magnesia |
| C. | silica |
| D. | both (a) and (c) |
| Answer» E. | |
| 14. |
The calcareour rocks have |
| A. | lime or calcium carbonate |
| B. | clay or alumina |
| Answer» B. clay or alumina | |
| 15. |
Snocem is an oil paint. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
The density of concrete |
| A. | does not change |
| B. | increases |
| C. | decreases |
| Answer» C. decreases | |
| 17. |
The percentage of the slag component of Portland-slag cement varies from |
| A. | 10 to 40% |
| B. | 40 to 70% |
| C. | 70 to 80% |
| D. | 80 to 90% |
| Answer» C. 70 to 80% | |
| 18. |
The solvent used in cement paints is |
| A. | thinner |
| B. | turpentine |
| C. | water |
| D. | spirit |
| Answer» D. spirit | |
| 19. |
The attrition test on stones is performed |
| A. | to determine the crushing strength of the stone |
| B. | for assessing the resistance of stone to the sun, rain, wind etc. |
| C. | for ascertain the stability of the stone when exposed to acid fumes |
| D. | for determining the rate of wear of stone due to grinding action under traffic |
| Answer» E. | |
| 20. |
Seasoning of tunber |
| A. | increases the weight of timber |
| B. | improves strength properties of timber |
| C. | does not give dimensional stability |
| D. | all of these |
| Answer» C. does not give dimensional stability | |
| 21. |
Which of the following paint is highly resistant to fire? |
| A. | Cement paint |
| B. | Asbestos paint |
| C. | Aluminium paint |
| D. | enamel paint |
| Answer» C. Aluminium paint | |
| 22. |
The lime mortar is made from |
| A. | quick lime |
| B. | fat lime |
| C. | lean lime |
| D. | hydraulic lime |
| Answer» E. | |
| 23. |
The percentage of the residue left after sieving good Portland cement in 90 micron sieve should not exceed |
| A. | 5% |
| B. | 10% |
| C. | 20% |
| D. | 30% |
| Answer» C. 20% | |
| 24. |
The base material for distemper is |
| A. | chalk |
| B. | lime |
| C. | clay |
| D. | lime putty |
| Answer» B. lime | |
| 25. |
The liquid part of the paint is called |
| A. | pigment |
| B. | vehicle |
| C. | solvent |
| D. | drier |
| Answer» C. solvent | |
| 26. |
The compressive strength of sandstone is |
| A. | 40 MN/m2 |
| B. | 55 MN/m2 |
| C. | 65 MN/m2 |
| D. | 80 MN/m2 |
| Answer» D. 80 MN/m2 | |
| 27. |
The amount of gypsum, usually, added in the manufacture of cement is |
| A. | 0.1 to 0.5% |
| B. | 0.5 to 1% |
| C. | 1 to 3% |
| D. | 3 to 5% |
| Answer» D. 3 to 5% | |
| 28. |
Linseed oil is rapidly soluble in |
| A. | alcohol |
| B. | turpentine |
| C. | naptha |
| D. | all of these |
| Answer» E. | |
| 29. |
Lacquer paints are more durable than enamel paints. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 30. |
Which of the following is an example of agrillaceous rock? |
| A. | Kaolin |
| B. | Slate |
| C. | Laterite |
| D. | all of these |
| Answer» E. | |
| 31. |
Marble contains mostly lime and silica. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 32. |
The length of a curved tile varies from |
| A. | 10 to 12 cm |
| B. | 12 to 15 cm |
| C. | 15 to 20 cm |
| D. | 20 to 22.5 cm |
| Answer» D. 20 to 22.5 cm | |
| 33. |
The thickness of five-ply sheet varies from |
| A. | 3 to 6 mm |
| B. | 6 to 9 mm |
| C. | 9 to 16 mm |
| D. | 16 to 20 mm |
| Answer» C. 9 to 16 mm | |
| 34. |
The dressing of stone is done |
| A. | immediately after quarrying |
| B. | after seasoning |
| C. | after three months of quarrying |
| D. | just before building |
| Answer» B. after seasoning | |
| 35. |
Hydraulic lime generates |
| A. | same |
| B. | less |
| C. | more |
| Answer» C. more | |
| 36. |
The rocks formed due to solidification of molten mass laying below or above the earth surface, are called |
| A. | aqueous rocks |
| B. | sedimentary rocks |
| C. | metamorphic rocks |
| D. | igneous rocks |
| Answer» E. | |
| 37. |
The compressive strength of ordinary cement is less than its tensile strength. |
| A. | Right |
| B. | Wrong |
| Answer» C. | |
| 38. |
Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is |
| A. | (i) and (iv) |
| B. | (ii) and (iii) |
| C. | (i) and (ii) |
| D. | (iii) and (iv) |
| Answer» C. (i) and (ii) | |
| 39. |
The defect caused due to over-maturity and unventilated storage of the wood during its transit, is called |
| A. | knot |
| B. | rind gall |
| C. | foxiness |
| D. | heart shake |
| Answer» D. heart shake | |
| 40. |
The thin radial fibres extending from the pith to the cambium layer is called medullary rays. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 41. |
The base in a paint is added to |
| A. | improve the quality of paint |
| B. | make smooth surface |
| C. | hide the surface to be painted |
| D. | all of these |
| Answer» D. all of these | |
| 42. |
Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is |
| A. | 5 to 10% |
| B. | 10 to 25% |
| C. | 25 to 30% |
| D. | 30 to 40% |
| Answer» D. 30 to 40% | |
| 43. |
The commonly used extender in a paint is |
| A. | barium sulphate |
| B. | gypsum |
| C. | alcohol |
| D. | any one of these |
| Answer» E. | |
| 44. |
The compressive strength of granite is |
| A. | 50 to 70 MN/m2 |
| B. | 70 to 130 MN/m2 |
| C. | 130 to 170 MN/m2 |
| D. | 170 to 200 MN/m2 |
| Answer» C. 130 to 170 MN/m2 | |
| 45. |
The timber whose thickness is less than 5 cm and the width exceeds 12 cm, is called a |
| A. | board |
| B. | plank |
| C. | batten |
| D. | log |
| Answer» B. plank | |
| 46. |
The compressive strength of paving bricks should not be less than |
| A. | 20 MN/m2 |
| B. | 30 MN/m2 |
| C. | 40 MN/m2 |
| D. | 50 MN/m2 |
| Answer» D. 50 MN/m2 | |
| 47. |
The time required for seasoning of timber in kilm seasoning is |
| A. | 2 to 5 days |
| B. | 5 to 10 days |
| C. | 10 to 20 days |
| D. | 20 to 40 days |
| Answer» D. 20 to 40 days | |
| 48. |
The average out-turn of first class bricks in clamp burning is about |
| A. | 50% |
| B. | 60% |
| C. | 70% |
| D. | 80% |
| Answer» C. 70% | |
| 49. |
The percentage of alumina in a good brick clay should vary from |
| A. | 20 to 30% |
| B. | 30 to 40% |
| C. | 40 to 50% |
| D. | 50 to 60% |
| Answer» B. 30 to 40% | |
| 50. |
The bricks after burning in kilns require about |
| A. | 4 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» E. | |