| 1. | The rocks formed due to solidification of molten mass are called. |
| A. | aqueous rocks |
| B. | sedimentary rocks |
| C. | metamorphic rocks |
| D. | igneous rocks |
| Answer» D. igneous rocks | |
| 2. | Granite is an example of |
| A. | aqueous rocks |
| B. | sedimentary rocks |
| C. | metamorphic rocks |
| D. | igneous rocks |
| Answer» D. igneous rocks | |
| 3. | Solidification of molten magma at the surface of the earth results in the formation of |
| A. | sedimentary rock |
| B. | basalt and traps |
| C. | granite |
| D. | metamorphic rock |
| Answer» B. basalt and traps | |
| 4. | .Solidification of molten magma within the earth’s crust results in the formation of |
| A. | sedimentary rock |
| B. | basalt and trap |
| C. | granite |
| D. | metamorphic rack |
| Answer» C. granite | |
| 5. | Sedimentary rocks are formed due to |
| A. | solidification of molten mass |
| B. | gradual deposition of materials like sand, clay, generally by setting water |
| C. | alteration of original stones under heat and pressure |
| D. | none of the above |
| Answer» B. gradual deposition of materials like sand, clay, generally by setting water | |
| 6. | Under metamorphism, which of the following changes is correct? |
| A. | granite changes to gnesis. |
| B. | trap and basalt change into laterite. |
| C. | limestones change into marble. |
| D. | all the above |
| Answer» D. all the above | |
| 7. | Granite has |
| A. | crystalline, glossy and fused texture |
| B. | foliated structure |
| C. | layers of different compositions |
| D. | none of the above |
| Answer» A. crystalline, glossy and fused texture | |
| 8. | The principal constituent of argillaceous rock is |
| A. | Sand |
| B. | lime |
| C. | clay |
| D. | all the above |
| Answer» C. clay | |
| 9. | Laterite is chemically classified as |
| A. | calcareous rock |
| B. | siliceous rock |
| C. | metamorphic rock |
| D. | argillaceous rock |
| Answer» D. argillaceous rock | |
| 10. | Which of the following is an example of siliceous rock? |
| A. | granite |
| B. | gnesis |
| C. | quartzite |
| D. | all the above |
| Answer» C. quartzite | |
| 11. | Marble is an example of |
| A. | aqueous rock |
| B. | metamorphic rock |
| C. | sedimentary rock |
| D. | igneous rock |
| Answer» B. metamorphic rock | |
| 12. | Slate is used for |
| A. | building walls |
| B. | road metal |
| C. | manufacture of cement |
| D. | roofing |
| Answer» D. roofing | |
| 13. | Which one of the following takes polish very well? |
| A. | basalt and trap |
| B. | granite |
| C. | sandstone |
| D. | quartzite |
| Answer» B. granite | |
| 14. | The colour of granite is |
| A. | grey |
| B. | green |
| C. | brown |
| D. | all of these |
| Answer» D. all of these | |
| 15. | A fine grained granite |
| A. | can be polished well |
| B. | can be used for exterior facing of buildings |
| C. | offers higher resistance to weathering |
| D. | all of the above |
| Answer» D. all of the above | |
| 16. | Siliceous sand subjected to metamorphic action is known as |
| A. | laterite |
| B. | murram |
| C. | quartzite |
| D. | dolomite |
| Answer» C. quartzite | |
| 17. | When quarrying is to be done in hard and compact rocks, the usual method employed is |
| A. | wedging |
| B. | using channeling machine |
| C. | blasting |
| D. | all of the above |
| Answer» C. blasting | |
| 18. | Quarrying by using channeling machine is employed for quarrying in |
| A. | soft rock |
| B. | hard rock |
| C. | sandstones |
| D. | all the above |
| Answer» A. soft rock | |
| 19. | Heating technique of breaking rocks is suitable if the aim is to get |
| A. | aggregates |
| B. | slabs |
| C. | building blocks |
| D. | none of the above |
| Answer» A. aggregates | |
| 20. | The process of taking out stones of various sizes from natural rock is known as |
| A. | dressing |
| B. | seasoning |
| C. | polishing |
| D. | quarrying |
| Answer» D. quarrying | |
| 21. | The process of giving required shape and size to stones is known as |
| A. | dressing |
| B. | seasoning |
| C. | polishing |
| D. | quarrying |
| Answer» A. dressing | |
| 22. | Boasted finish of dressing stone is |
| A. | making non-continuous parallel marks |
| B. | giving finish to a 20 mm margin only at edges |
| C. | providing continuous lines on the face |
| D. | working out 30–50 mm wide margin around the face with chisel |
| Answer» A. making non-continuous parallel marks | |
| 23. | Dressing of the stone is made |
| A. | immediately after quarrying |
| B. | after three months of quarrying |
| C. | just before using for building works |
| D. | after seasoning |
| Answer» A. immediately after quarrying | |
| 24. | The most powerful explosive used in blasting is. |
| A. | gunpowder |
| B. | guncotton |
| C. | dynamite |
| D. | cordite |
| Answer» B. guncotton | |
| 25. | Moisture absorption of a good stone should be less than |
| A. | 1% |
| B. | 5% |
| C. | 8% |
| D. | 12% |
| Answer» B. 5% | |
| 26. | Most of the stones possess the specific gravity in the range of |
| A. | 1.2 – 1.6 |
| B. | 1.6 – 2.0 |
| C. | 2.4 – 2.8 |
| D. | 3.0 – 4.0 |
| Answer» C. 2.4 – 2.8 | |
| 27. | Limestone used for manufacture of cement is |
| A. | kankar |
| B. | magnesium limestone |
| C. | compact limestone |
| D. | granular limestone |
| Answer» A. kankar | |
| 28. | Which of the following has the highest crushing strength? |
| A. | granite |
| B. | gneiss |
| C. | basalt |
| D. | trap |
| Answer» D. trap | |
| 29. | Which of the following stone has the highest resistance to fire? |
| A. | granite |
| B. | limestone |
| C. | sandstone |
| D. | argillaceous material |
| Answer» D. argillaceous material | |
| 30. | Smith’s test on stone is to check |
| A. | toughness |
| B. | hardness |
| C. | compressive strength |
| D. | presence of muddy substance |
| Answer» D. presence of muddy substance | |
| 31. | Los Angeles testing machine is used to find the following. In stone |
| A. | surface wear |
| B. | hardness |
| C. | compressive strength |
| D. | presence of mud |
| Answer» A. surface wear | |
| 32. | Impact value of stone for road work specified are |
| A. | wearing coat 30% |
| B. | bituminous macadam 35% |
| C. | water bound macadam 40% |
| D. | all the above |
| Answer» D. all the above | |
| 33. | Deterioration of stones takes place due to |
| A. | temperature variation |
| B. | freezing and thawing |
| C. | rainwater |
| D. | all of the above |
| Answer» D. all of the above | |
| 34. | Which one of the follo ing is not a preservative of stone |
| A. | coal tar |
| B. | paraffin |
| C. | linseed oil |
| D. | ASCU |
| Answer» D. ASCU | |
Chapter: Timber
| 35. | After felling and separating branches the tree is known as |
| A. | log |
| B. | converted timber |
| C. | rough timber |
| D. | none of the above |
| Answer» C. rough timber | |
| 36. | Which one of the following does not belong to exogenous tree |
| A. | deodar |
| B. | pine |
| C. | mahogany |
| D. | bamboo |
| Answer» C. mahogany | |
| 37. | Which one of the following dose not belong to endogenous trees |
| A. | teak |
| B. | coconut |
| C. | bamboo |
| D. | cane |
| Answer» C. bamboo | |
| 38. | On the basis of durability test, Forest Research Institute of India, Dehradun, a tree is highly durable if its average life is more than |
| A. | 5 years |
| B. | 10 years |
| C. | 15 years |
| D. | 20 years |
| Answer» B. 10 years | |
| 39. | The trees, of which leaves fall in autumn and new ones appear in spring are classified as |
| A. | coniferous trees |
| B. | deciduous trees |
| C. | endogenous trees |
| D. | none of the above |
| Answer» B. deciduous trees | |
| 40. | The oldest part of exogenous tree is |
| A. | pith |
| B. | heartwood |
| C. | sapwood |
| D. | cambium layer |
| Answer» A. pith | |
| 41. | Age of exogenous tree can be judged from |
| A. | medullary rays |
| B. | annual rings |
| C. | cambium layer |
| D. | inner bark |
| Answer» B. annual rings | |
| 42. | The layer between the dark and sapwood which is yet to be converted into wood is known as |
| A. | pith |
| B. | heartwood |
| C. | softwood |
| D. | cambium layer |
| Answer» D. cambium layer | |
| 43. | Which one of the following is softwood |
| A. | deodar |
| B. | teak |
| C. | sal |
| D. | mahogany |
| Answer» A. deodar | |
| 44. | Which one of the following is not a softwood: |
| A. | oak |
| B. | pine |
| C. | deodar |
| D. | bamboo |
| Answer» A. oak | |
| 45. | On the basis of availability, timber is classified as |
| A. | I. II, III Class |
| B. | grade I, II, and III |
| C. | A, B, C Class |
| D. | , Y, Z Class |
| Answer» D. , Y, Z Class | |
| 46. | Seasoning makes timber |
| A. | durable |
| B. | light, strong and stable |
| C. | resistant to fungi and termites |
| D. | all of the above |
| Answer» D. all of the above | |
| 47. | Which of the following statements is not correct? |
| A. | by kiln seasoning moisture content can be reduced to the desired extent. |
| B. | kiln seasoning is quicker than natural seasoning. |
| C. | kiln seasoning is superior to natural seasoning. |
| D. | kiln seasoning needs less stacking place than natural seasoning. |
| Answer» C. kiln seasoning is superior to natural seasoning. | |
| 48. | Most economical method of sawing wood is |
| A. | ordinary sawing |
| B. | quarter sawing |
| C. | tangential sawing |
| D. | radial sawing |
| Answer» A. ordinary sawing | |
| 49. | Sections of more uniform moisture content are obtained by |
| A. | ordinary sawing |
| B. | quarter sawing |
| C. | tangential sawing |
| D. | radial sawing |
| Answer» B. quarter sawing | |
| 50. | The defect in timber due to broken branch of the tree during the tree growth is |
| A. | knot |
| B. | shake |
| C. | rind gall |
| D. | burl |
| Answer» A. knot | |
| 51. | Stain appears in wood due to |
| A. | poor ventilation during storage |
| B. | contact with water and chemicals for long time |
| C. | shock when it was young |
| D. | crushing during growth |
| Answer» B. contact with water and chemicals for long time | |
| 52. | Honeycomb and cracks may occur in timber due to |
| A. | erroneous conversion |
| B. | erroneous seasoning |
| C. | attack by fungi |
| D. | contact with water for a long time |
| Answer» B. erroneous seasoning | |
| 53. | Which one of the following is not a preservative of timber |
| A. | solignum salt |
| B. | chemical salt |
| C. | creosote |
| D. | solution of barium hydroxide |
| Answer» D. solution of barium hydroxide | |
| 54. | A thin sheet of wood sliced from log is called |
| A. | plywood |
| B. | lamin board |
| C. | veneer |
| D. | particle board |
| Answer» C. veneer | |
| 55. | In a plywood the veneers are placed such that the gra ns of a layer are |
| A. | at 45° to the grains of a layer below it |
| B. | at 60° to the grains of a layer below it |
| C. | at right angles to the layer below it |
| D. | at 180° to the grains of a layer below it |
| Answer» C. at right angles to the layer below it | |
| 56. | Plywood is identified by |
| A. | volume |
| B. | weight |
| C. | area |
| D. | thickness |
| Answer» D. thickness | |
| 57. | An assembled product made up of veneers and adhesives is called |
| A. | batten |
| B. | plank |
| C. | board |
| D. | plywood |
| Answer» D. plywood | |
| 58. | Particle boards are manufactured by using |
| A. | chips of wood, rice husk and bagasse |
| B. | strips of wood of width 25–80 mm |
| C. | wood pulp |
| D. | none of the above |
| Answer» A. chips of wood, rice husk and bagasse | |
| 59. | The wood that cannot be attacked by white ants is |
| A. | mahogany |
| B. | rosewood |
| C. | sissoo |
| D. | teak |
| Answer» D. teak | |
| 60. | The standard size of bricks as per Indian Standards is |
| A. | 230 × 120 × 80 mm |
| B. | 200 × 100 × 100 mm |
| C. | 190 × 90 × 90 mm |
| D. | 190 × 100 × 100 mm |
| Answer» C. 190 × 90 × 90 mm | |
| 61. | Red colour of brick is due to the pre ence of |
| A. | lime |
| B. | silica |
| C. | manganese |
| D. | iron oxide |
| Answer» D. iron oxide | |
| 62. | Excess of lime in the brick earth makes the bricks |
| A. | brittle and weak |
| B. | crack and warp |
| C. | melt and lose shape |
| D. | improve durability |
| Answer» C. melt and lose shape | |
| 63. | Excess of iron oxide in brick earth makes the bricks |
| A. | stronger |
| B. | darker |
| C. | brittle |
| D. | crack |
| Answer» B. darker | |
| 64. | Alumina in brick earth gives the bricks |
| A. | strength |
| B. | colour |
| C. | plasticity |
| D. | resistance to shrinkage |
| Answer» C. plasticity | |
| 65. | Excess of alkalies in the brick earth results into |
| A. | Brittleness |
| B. | white patches |
| C. | yellowish colour |
| D. | porous structure |
| Answer» B. white patches | |
| 66. | Pug mill is used to |
| A. | blend clay |
| B. | tempering |
| C. | weathering clay |
| D. | burning bricks |
| Answer» B. tempering | |
| 67. | The size of mould used for making bricks compared to size of brick is |
| A. | 10% more |
| B. | 5% more |
| C. | exactly equal |
| D. | 5% less |
| Answer» A. 10% more | |
| 68. | Pallet board is used to |
| A. | make frog in the brick |
| B. | to mount the mould |
| C. | for table moulding of bricks |
| D. | none of the above |
| Answer» B. to mount the mould | |
| 69. | In stiff mud process of machine moulding, water used for mixing is |
| A. | 8–12% |
| B. | 12–18% |
| C. | 20–24% |
| D. | 30% |
| Answer» B. 12–18% | |
| 70. | Gradual drying of moulded bricks is necessary to |
| A. | prevent shrinkage |
| B. | permit shrinkage without cracking |
| C. | permit blending of alumina and silica |
| D. | none of the above |
| Answer» B. permit shrinkage without cracking | |
| 71. | The brick is considered dry when the moisture content is |
| A. | 8% |
| B. | 5% |
| C. | 2% |
| D. | zero |
| Answer» C. 2% | |
| 72. | Hand moulded bricks take ______ days for drying while stiff-mud machine made bricks ______ days. |
| A. | 30, 5 |
| B. | 15, 2 |
| C. | 10, 1 |
| D. | 8, 1/4 |
| Answer» B. 15, 2 | |
| 73. | The indentation mark left on bricks during the process of moulding are |
| A. | pallets |
| B. | fillets |
| C. | marks |
| D. | frog |
| Answer» D. frog | |
| 74. | Which one of the following statements is wrong about clamp burning |
| A. | it is cheap |
| B. | does not need skilled labour |
| C. | control on burning process is good |
| D. | burning process is slow |
| Answer» C. control on burning process is good | |
| 75. | Continuous kiln is |
| A. | bull’s trench kiln |
| B. | Hoffman’s kiln |
| C. | tunnel kiln |
| D. | all of the above |
| Answer» D. all of the above | |
| 76. | The minimum strength of brick required for building wall is |
| A. | 7.5 N/mm2 |
| B. | 5.0 N/mm2 |
| C. | 3.5 N/mm2 |
| D. | 2.5 N/mm2 |
| Answer» C. 3.5 N/mm2 | |
| 77. | To check the size of brick number of bricks to be kept side by side is |
| A. | 30 |
| B. | 20 |
| C. | 10 |
| D. | 5 |
| Answer» B. 20 | |
| 78. | The bricks which may be used to build wall but to be provided with plaster are |
| A. | Ist Class |
| B. | IInd Class |
| C. | IIIrd Class |
| D. | IVth Class |
| Answer» B. IInd Class | |
| 79. | The compressive strength of high duty bricks should be more than |
| A. | 40 N/mm2 |
| B. | 20 N/mm2 |
| C. | 5 N/mm2 |
| D. | 3.5 N/mm2 |
| Answer» A. 40 N/mm2 | |
| 80. | Thickness of web of hollow bricks should not be less than |
| A. | 20 mm |
| B. | 16 mm |
| C. | 12 mm |
| D. | 8 mm |
| Answer» D. 8 mm | |
| 81. | Compressive strength of paving bricks should not be less than |
| A. | 40 N/mm2 |
| B. | 30 N/mm2 |
| C. | 20 N/mm2 |
| D. | 40 N/mm2 |
| Answer» A. 40 N/mm2 | |
| 82. | Field test for strength of good bricks is to drop it from a height of ______ and they should not break |
| A. | 1.2 m |
| B. | 1.0 m |
| C. | 0.7 m |
| D. | 0.75 m |
| Answer» B. 1.0 m | |
| 83. | For making stabilized soil brick the soil is stabilized with |
| A. | sand |
| B. | coal |
| C. | cement |
| D. | salt |
| Answer» C. cement | |
| 84. | Refractory bricks resist |
| A. | high temperature |
| B. | chemical action |
| C. | action of frost |
| D. | all of the above |
| Answer» A. high temperature | |
Chapter: Clay Products
| 85. | In case of round tiles, under-tiles are used with their narrow ends |
| A. | towards eve |
| B. | towards ridge |
| C. | towards valley |
| D. | in any one fashion |
| Answer» A. towards eve | |
| 86. | Maximum water absorption permitted on class AA type Mangalore tiles is |
| A. | 13% |
| B. | 15% |
| C. | 17% |
| D. | 19% |
| Answer» D. 19% | |
| 87. | Which of the following statement is wrong? |
| A. | Pan tiles are similar to half round tiles but less curved |
| B. | Pan tiles are weaker than half round tiles |
| C. | Allahabad tiles are interlocking tiles |
| D. | Mangalore tiles are also interlocking tiles |
| Answer» B. Pan tiles are weaker than half round tiles | |
| 88. | Terracotta means |
| A. | insulated |
| B. | fit for sanitary services |
| C. | good for ornamental work |
| D. | baked earth |
| Answer» D. baked earth | |
| 89. | Water absorption of vitrified tiles is not more than |
| A. | 0.5% |
| B. | 1.0% |
| C. | 2.0% |
| D. | 5.0% |
| Answer» A. 0.5% | |
| 90. | To make terracotta porous, the following is mixed with clay before burning. |
| A. | lime |
| B. | silica |
| C. | sawdust |
| D. | none of the above |
| Answer» C. sawdust | |
Chapter: Ferrous Materials
| 91. | By calcining and smelting iron ores, a crude and impure form of iron obtained is known as |
| A. | cast iron |
| B. | wrought iron |
| C. | steel |
| D. | pig iron |
| Answer» D. pig iron | |
| 92. | The colour of cast iron is |
| A. | grey |
| B. | white |
| C. | both grey and white |
| D. | none of the above |
| Answer» C. both grey and white | |
| 93. | The compressive and tensile strength of cast iron are |
| A. | 700 N/m2 and 150 N/mm2 |
| B. | 600 N/mm2 and 400 N/mm2 |
| C. | 415 N/mm2 and 415 N/mm2 |
| D. | 400 N/mm2 and 600 N/mm2 |
| Answer» A. 700 N/m2 and 150 N/mm2 | |
| 94. | For making spiral staircases, ideal material is |
| A. | pig iron |
| B. | cast iron |
| C. | wrought iron |
| D. | steel |
| Answer» B. cast iron | |
| 95. | Purest form of iron is |
| A. | pig iron |
| B. | cast iron |
| C. | wrought iron |
| D. | steel |
| Answer» C. wrought iron | |
| 96. | Carbon content in wrought iron is |
| A. | 0.15% |
| B. | 0.25 to 1.5% |
| C. | 2 to 4% |
| D. | more than 4% |
| Answer» A. 0.15% | |
| 97. | The ratio of tensile strength to compressive strength of steel is |
| A. | less than 1 |
| B. | equal to 1 |
| C. | more than 1 |
| D. | nothing can be said definitely |
| Answer» B. equal to 1 | |
| 98. | Ribs are made on steel wires to increase |
| A. | strength is compression |
| B. | strength is tension |
| C. | bond strength |
| D. | fatigue quality |
| Answer» C. bond strength | |
| 99. | The property of metal enabling it to be drawn into thin weir is known as |
| A. | malleability |
| B. | ductility |
| C. | toughness |
| D. | plasticity |
| Answer» B. ductility | |
| 100. | Non-ferrous Materials |
| A. | Market form of copper is/are |
| B. | ingots |
| C. | sheets |
| D. | tubes |
| Answer» D. tubes | |
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