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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The process of applying an adhesive is:(a) Speedy(b) Slow(c) Costly(d) Cumbersome |
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Answer» Correct choice is (a) Speedy Explanation: Adhesive is used to join two surfaces, forming a strong bond between them. It is easy, economic and fast to apply. |
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| 2. |
Which of the following glues is used to join light metals?(a) Metal glue(b) Cycle weld(c) Araldite glue(d) Special glue |
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Answer» Correct answer is (c) Araldite glue The explanation: Special glue is used to join metals in general. Cycle weld is used to join aluminium sheet and araldite glue is used to join light metals. |
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| 3. |
Vault is an architectural term for:(a) Cable(b) Bridges(c) Arch(d) Dam |
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Answer» Right option is (c) Arch Easy explanation: Vault is an arched form used to provide high ceiling spaces. There can be barrel vault or continuous vaults. |
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| 4. |
Which of the below adhesive is not attacked by water?(a) Starch glue(b) Albumin glue(c) Vegetable glue(d) Rubber glue |
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Answer» Right answer is (b) Albumin glue The best I can explain: Albumin glue is better quality glue and is used for furniture. Starch glue and Vegetable glue is not water resistant. |
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| 5. |
A non-condensable gas is found(a) Above the critical point(b) Below the critical point(c) On the critical point(d) None of the mentioned |
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Answer» Correct choice is (a) Above the critical point Easiest explanation: A non-condensable gas is found above the critical point. |
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| 6. |
Nitrocellulose glue is prepared from:(a) Pyridine(b) Benzene(c) Pyroxylin(d) Resin |
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Answer» Right option is (c) Pyroxylin Easiest explanation: Pyroxylin is a nitrated cellulose. It is derived by treating cellulose with a nitric acid. It produces films which adheres to a glass surface. |
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| 7. |
R.C.C. was developed and first used by:(a) Joseph Monier(b) John Smeaton(c) Francois Coignet(d) Joseph Asphadin |
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Answer» Right answer is (c) Francois Coignet Explanation: Joseph Monier founded ferro-cement. John Smeaton is considered the father of Civil Engineering. Joseph Asphdin founded Portland cement. Francois Coignet was a French industrialist and the first to use iron-reinforced concrete. |
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| 8. |
Light, a term used in windows, is:(a) Area between outer parts of a window(b) Glazed part of the window(c) Area between inner parts of a window(d) Opening of the window allowing light |
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Answer» The correct choice is (a) Area between outer parts of a window To explain: Light or Lite is a term used to refer to the area between outer parts of the window. It is usually filled with a glass pane. |
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| 9. |
Which of the below glue can be made plastic again by re-heating?(a) Thermo-setting(b) Rubber glue(c) Animal protein glue(d) Thermo-plastic |
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Answer» Correct choice is (d) Thermo-plastic To explain: Glue from synthetic resins can be either thermo-setting or thermo-plastic. The thermo-setting one is permanent in nature. Thermo-plastic glue can be reheated and made plastic again. |
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| 10. |
Which glue can bond a metal to wood?(a) Contact cement(b) Super glue(c) PVC cement(d) Gorilla glue |
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Answer» Right choice is (a) Contact cement Explanation: First the metal is cleaned and filed using sand paper. It is done to make it rough for the adhesive to grip onto. Then adhesive is applied to both surfaces and pressed. Super glue is used for porcelain to porcelain; PVC cement for plastic to plastic and gorilla glue for wood to wet wood. |
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| 11. |
The water permeability of timber is greater:(a) Along centre(b) Along Fibres(c) Along annual rings(d) Along bark |
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Answer» Correct answer is (b) Along Fibres Best explanation: Water permeability of timber should essentially be zero. If it absorbs water, it is prone to decay. Fibres are most porous. |
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| 12. |
Which of the below is constructed above doors, windows?(a) Joist(b) Purlin(c) Lintel(d) Arch |
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Answer» Correct choice is (c) Lintel The explanation is: Windows and doors are openings in a wall. To support the overlying bricks, a structure is built on top of the opening. It is called lintel. |
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| 13. |
Economy can be achieved in doors, windows, ventilator by:(a) No frame(b) Less width(c) Steel frames(d) Less height |
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Answer» Right answer is (c) Steel frames To elaborate: Doors, windows and ventilators are openings in the wall that are held on a frame. Not using a frame is economic, but not very aesthetic. Using concrete/steel frames instead of wood can help in reducing cost. |
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| 14. |
Gorilla glue is made up of:(a) Resin(b) Epoxy(c) Polyurethane(d) Animal protein |
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Answer» Right answer is (c) Polyurethane The explanation: It is a type of polyurethane adhesive. It is 100% water proof, easily bonds glass, wood, stone, metal, concrete, etc. It is also temperature resistant and incredibly strong. |
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| 15. |
In Herringbone bond, bricks are placed at _________ angle from __________ line in both directions.(a) 60^o, central(b) 60^o, vertical(c) 45^o, central(d) 45^o, vertical |
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Answer» Correct answer is (c) 45^o, central The best explanation: There is a central line with respect to which bricks are laid. It is laid at 45^o angle in both directions. It is used where wall thickness is more than 4 bricks or for paving. |
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| 16. |
Which of the below type of timber has Young’s Modulus greater than 9800 N/mm^2, but less than 12600 N/mm^2?(a) Average timber(b) Very good timber(c) Good timber(d) Light timber |
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Answer» The correct choice is (c) Good timber Easiest explanation: Average timber has Young’s Modulus (E) varying between 6600 N/mm^2 and 9800 N/mm^2. Very good timber has E greater than 12600 N/mm^2. There is no classification as light timber based on E. |
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| 17. |
Which of the following type of bricks is made for jambs of doors and windows?(a) Cant bricks(b) Arch bricks(c) Lintel bricks(d) Hinged bricks |
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Answer» Correct option is (a) Cant bricks Easy explanation: Purpose-made bricks are those made to achieve a specific purpose. They can be splay or Cant, Arch, Ornamental, etc. They are costly but help in quick construction. |
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| 18. |
Pyramid is a type of ___________ structure.(a) Triangulated(b) Massive(c) Pneumatic(d) Framed |
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Answer» Right option is (b) Massive Best explanation: Massive or lintelled structure is built with a large amount of materials. It can take up compression efficiently and has very few spaces. |
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| 19. |
The portion of bricks cut across the width in half is called:(a) Half split(b) Half closer(c) Half bed(d) Half bat |
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Answer» The correct answer is (d) Half bat For explanation I would say: When a brick is halved along its height, it is a split, that along the length is a closer. Bed is the lower surface of brick when the brick is laid flat. |
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| 20. |
How is the hardness of brick tested?(a) Using finger nail(b) Using hardness apparatus(c) Using hammer(d) Using chisel |
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Answer» Right choice is (a) Using finger nail To explain: Brick is scratched using finger nail. If there are no visible scratches made on the brick surface, it is said to be sufficiently hard. |
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| 21. |
Which of the below is a disadvantage of frame structure?(a) Ease of construction(b) Economy(c) Speed of construction(d) Span length |
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Answer» Correct answer is (d) Span length Best explanation: Span length is usually restricted to 40ft when normal R.C.C. is used. Spans greater than this can cause lateral deflections. |
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| 22. |
What is the maximum permissible tolerance for length and width respectively?(a) ± 3mm and ± 6mm(b) ± 6mm and ± 3mm(c) ± 3cm and ± 6cm(d) ± 6cm and ± 3cm |
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Answer» Correct choice is (b) ± 6mm and ± 3mm The explanation is: The standard size of brick is length – 190mm and width – 90mm. When manufactured, size variations may occur by expansion or contraction while drying and burning process. Permissible tolerance is ± 6mm for length and ± 3mm for width and height. |
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| 23. |
Which of the below given formulas is used to calculate hardness coefficient?(a) (Final hardness / initial hardness) × 100%(b) 20 – (loss in weight / 2)(c) 20 – (loss in weight / 3)(d) ((20 – loss in weight) / 3) × 100% |
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Answer» The correct choice is (c) 20 – (loss in weight / 3) The best explanation: The coefficient of hardness is expressed as a number and not a percentage. |
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| 24. |
Which of the following is not a pozzolanic material?(a) Fly ash(b) Silica fume(c) Cinder(d) Slag |
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Answer» The correct option is (c) Cinder Easiest explanation: Pozzolans are silicate based materials that form cementitious materials. Fly ash, silica fumes and slag are composed of oxide of silicon. Cinder is a coal residue. |
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| 25. |
What is the speciality of Hydraulic Lime?(a) Contains impurities(b) Does not set under water(c) Contains clay(d) Perfectly white in colour |
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Answer» Correct option is (c) Contains clay Explanation: The clay content gives it the hydraulic property – capacity to set and harden even under water. |
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| 26. |
What is the required minimum fineness for grade 53 OPC?(a) 370 m^2/kg(b) 370 cm^2/g(c) 580 m^2/kg(d) 580 cm^2/g |
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Answer» Right option is (a) 370 m^2/kg The explanation is: The value is in accordance with the IS code 12269 for 53 grade OPC. Table 3 gives physical requirements and fineness is one of them. |
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| 27. |
Which of the following cannot be added in 33 grade OPC after burning stage?(a) Gypsum(b) Water(c) Colouring Agents(d) Clay |
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Answer» The correct answer is (d) Clay Explanation: The details and specifications regarding the manufacture of 33 grade OPC are mentioned in IS 269. It says that after burning, only certain element like gypsum, water, performance enhancers, colouring agent can be added. More raw material-clay cannot be added. |
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| 28. |
The ratio of percentage of alumina to iron oxide in OPC 43 grade is:(a) 3.5(b) 0.66(c) 0.1(d) 0.05 |
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Answer» Correct option is (b) 0.66 Explanation: It is mentioned in IS 8112:2013 Table 2. 3.5 is the total sulphur content, 0.1 is chloride content and 0.05 is alkali content. |
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| 29. |
Grade 43 OPC is used widely for:(a) High rise buildings(b) Plastering(c) House construction(d) Finishing works |
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Answer» The correct choice is (c) House construction To explain I would say: Grade 43 OPC has higher strength than grade 33 and lower than grade 53. Grade 33 used for finishing works under normal condition. Grade 53 is used for high rise building. |
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| 30. |
What is the speciality of FALG bricks?(a) Are composed of agricultural waste(b) Round in shape(c) Economic alternative to clay bricks(d) Widely used in masonry work |
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Answer» The correct choice is (c) Economic alternative to clay bricks Easy explanation: FALG bricks are composed of flyash, lime and gypsum. It utilises the waste from thermal power plants and hence it is an economic alternative to clay bricks. |
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| 31. |
How much maximum percentage by mass of performance improvers can be added in grade 33 OPC?(a) 0.5(b) 1(c) 5(d) 0.1 |
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Answer» The correct choice is (c) 5 The best I can explain: Performance improvers include fly ash, slag, rice husk, ash, etc. These can be added in quantity of 5% by mass as per Table 1 given in IS 269. |
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| 32. |
The meaning of slop moulded bricks is:(a) Sand sprinkled inside mould(b) Insufficiently moulded bricks(c) Brittle and slimy bricks(d) Mould dipped in water |
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Answer» Right answer is (d) Mould dipped in water To explain: To avoid clay from sticking on the mould, either sand is sprinkled (sand moulded bricks) or mould is dipped in water (slop moulded bricks). |
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| 33. |
A good brick should not absorb more than what percent of water when soaked?(a) 15%(b) 20%(c) 30%(d) 10% |
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Answer» Correct answer is (a) 15% The explanation is: As per IS codes when a brick is soaked in water for 24 hours, it should not absorb more than 15% of its dry weight. |
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| 34. |
Which of the following is not a feature of second class bricks?(a) Have small irregularities(b) Water absorption is between 20-25%(c) Rectangular in shape(d) Free from cracks |
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Answer» Correct option is (b) Water absorption is between 20-25% Easy explanation: The water absorption of second class bricks is less than 22%. 20-25% is the range of water absorption of third class bricks. |
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| 35. |
Burnt bricks can be further classified into how many types?(a) 2(b) 4(c) 3(d) 5 |
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Answer» The correct option is (b) 4 For explanation: There can be 4 sub-divisions of burnt bricks. They are first class, second class, third class and kiln rejected bricks. |
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| 36. |
First class bricks are used for:(a) Brick ballast in R.C.C(b) Boundary walls(c) Low height walls(d) Pavements |
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Answer» The correct choice is (d) Pavements For explanation I would say: First class bricks are strong, durable and have a good appearance. These are used for important work, load bearing works. Pavements, flooring, load bearing wall are some places of use. |
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| 37. |
How should the smell of a freshly cut timber be?(a) Sweet(b) Pungent(c) Unpleasant(d) Odourless |
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Answer» The correct option is (a) Sweet To elaborate: One can detect the quality of a timber by smelling freshly cut timber. Ideally, it should be sweet. Unpleasant smell indicates decay of timber. |
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| 38. |
What is the loading rate used in compressive strength test?(a) 14 N/mm^2 per hour(b) 14 N/mm^2 per minute(c) 20 N/mm^2 per minute(d) 40 N/mm^2 per hour |
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Answer» Correct answer is (b) 14 N/mm^2 per minute Easy explanation: As per IS codes, the loading on brick specimen in a CTM should be uniform at rate of 14 N/mm^2 per minute. |
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| 39. |
The surface of freshly cut timber should be:(a) Soft and shining(b) Hard and shining(c) Perfectly round(d) Light in colour |
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Answer» The correct option is (b) Hard and shining For explanation I would say: Dull appearance is a sign of defective timber. Soft surface is prone to attack by insects, fungus and is not a good quality. |
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| 40. |
Breaking down is the process of:(a) Felling a tree(b) Conversion of logs(c) Defect in timber(d) Reducing weight |
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Answer» The correct option is (b) Conversion of logs The explanation is: The logs are cut into the board using circular saws and band saws. This is called conversion, and first stage of conversion is the process called breaking down. It means rough sawing. |
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| 41. |
Which of the following is a type of non-refractory timber?(a) Semul(b) Teak(c) Sheesham(d) Sal |
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Answer» Correct option is (a) Semul For explanation: Bases on seasoning, timber has been classified into non-refractory, moderately refractory and eminent refractory timber. Teak and Sheesham are examples of moderately refractory and Sal of eminent refractory timber. |
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| 42. |
Which of the following is not a cause of the decay of timber?(a) Lack of ventilation(b) Alternate dry and wet conditions(c) Absence of moisture(d) Moisture accompanied by heat |
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Answer» Correct answer is (c) Absence of moisture Easiest explanation: Presence of moisture and sap accelerate the decay of timber. |
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| 43. |
Which of the below is a disadvantage of air seasoning?(a) Power requirement(b) Skilled supervision(c) Elaborate equipment(d) Uniformity of seasoning |
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Answer» Right choice is (d) Uniformity of seasoning For explanation I would say: Air or natural seasoning does not require power, skilled supervision and elaborate equipment. These are all advantage of air seasoning. It might not give uniformly seasoned timber. |
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| 44. |
IS 3629-1966 classifies timber into 3 classes based on:(a) Availability(b) Average life(c) Durability(d) Density |
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Answer» The correct choice is (b) Average life To explain I would say: There are 3 classes-class I, class II and class III. Class I timber has an average life of 120 months or more, Class II of 60 months or over, but less than 120 months. Class III has an average life of less than 60 months. |
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| 45. |
Which of the below chemicals is not used in chemical seasoning?(a) Sodium chloride(b) Urea(c) Sodium hypochlorite(d) Sodium nitrate |
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Answer» Correct answer is (c) Sodium hypochlorite To elaborate: Chemicals used are dehydrating agents. Timber is immersed in such salt solutions and allowed to reduce water content. Sodium hypochlorite is a disinfectant. |
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| 46. |
Which of the below is not an ISI classified channel section?(a) ISLC(b) ISJC(c) ISHC(d) ISMC |
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Answer» The correct option is (c) ISHC Easiest explanation: ISLC stands for Indian Standards Light Channel. Similarly, there are Junior (J), Medium (M) and Special (S) Channels. There is no heavy (H) Channel. |
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| 47. |
Which method leaves the timber brittle after seasoning?(a) Water seasoning(b) Kiln seasoning(c) Electric seasoning(d) Boiling |
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Answer» The correct choice is (a) Water seasoning For explanation: Timber pieces are totally immersed in running water for 2-4 weeks. The sap, organic matter is carried away by water in water seasoning. It renders the timber brittle. |
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| 48. |
Which is the most rapid and effective method of seasoning?(a) Chemical seasoning(b) Electric seasoning(c) Kiln seasoning(d) Natural seasoning |
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Answer» Correct option is (b) Electric seasoning Easy explanation: Electric seasoning involves passing high electricity through timber. Since it is a bad conductor of electricity, it gets heated up. It results in rapid seasoning and it is effective as it provides uniform seasoning. |
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| 49. |
What is the density of a light timber?(a) 5.5 kN/m^3(b) Less than 2.5 kN/m^3(c) 2.5 kN/m^3(d) Less than 5.5 kN/m^3 |
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Answer» The correct choice is (d) Less than 5.5 kN/m^3 The explanation is: Density of light to very light timber is less than 5.5 kN/m^3. Moderate timber has density between 5.5 and 7.5 kN/m^3 and heavy to very heavy timber has density greater than 7.5 kN/m^3. |
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| 50. |
Seasoning of timber is the process of:(a) Burning timber(b) Adding preservatives(c) Removing water(d) Adding glaze |
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Answer» Correct choice is (c) Removing water The explanation: Tree when felled contains sap and high moisture content. To use it for engineering purpose, it has to be dried. The process of drying timber to remove water is called seasoning. |
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