1. Which of the following is a natural building material?
A) Cement
B) Brick
C) Stone
D) Concrete
2. The main ingredient of cement is:
A) Gypsum
B) Limestone
C) Clay
D) Sand
3. Which cement is used for rapid strength gain?
A) Ordinary Portland Cement
B) White Cement
C) Rapid Hardening Cement
D) Pozzolana Cement
4. Standard consistency of cement is determined using:
A) Slump Cone
B) Vicat Apparatus
C) Compression Testing Machine
D) Sieve Shaker
5. Initial setting time of OPC should not be less than:
A) 10 min
B) 20 min
C) 30 min
D) 60 min
6. The specific gravity of cement is approximately:
A) 2.15
B) 3.15
C) 4.15
D) 5.15
7. Which material is commonly used as fine aggregate?
A) Gravel
B) Sand
C) Stone Chips
D) Boulder
8. Fine aggregate passes through:
A) 10 mm sieve
B) 4.75 mm sieve
C) 20 mm sieve
D) 40 mm sieve
9. Coarse aggregate is retained on:
A) 75 micron sieve
B) 600 micron sieve
C) 2.36 mm sieve
D) 4.75 mm sieve
10. Which aggregate shape provides better interlocking?
A) Rounded
B) Angular
C) Flaky
D) Elongated
11. The standard modular brick size is:
A) 190 × 90 × 90 mm
B) 230 × 110 × 70 mm
C) 250 × 125 × 75 mm
D) 200 × 100 × 100 mm
12. Bricks are burnt in:
A) Ovens
B) Kilns
C) Furnaces
D) Chambers
13. Water absorption of first-class bricks should not exceed:
A) 10%
B) 15%
C) 20%
D) 25%
14. Efflorescence in bricks is caused by:
A) Clay
B) Moisture
C) Soluble salts
D) Cement
15. Which timber is considered most durable?
A) Teak
B) Pine
C) Deodar
D) Sal
16. Seasoning of timber is done to:
A) Increase moisture
B) Remove moisture
C) Increase weight
D) Improve color
17. Dry rot in timber is caused by:
A) Insects
B) Fungi
C) Water
D) Fire
18. Plywood is manufactured by:
A) Compressing sawdust
B) Joining timber sections
C) Gluing veneers together
D) Casting wood pulp
19. MDF stands for:
A) Medium Density Fibreboard
B) Maximum Density Fibreboard
C) Medium Durable Fibreboard
D) Mixed Density Fibreboard
20. HYSD bars are used in:
A) Masonry
B) RCC
C) Flooring
D) Roofing
21. Modulus of elasticity of steel is approximately:
A) 20 GPa
B) 50 GPa
C) 100 GPa
D) 200 GPa
22. Galvanizing is done to:
A) Increase strength
B) Prevent corrosion
C) Improve appearance
D) Reduce weight
23. Aluminum is commonly used for:
A) Foundations
B) Roofing sheets
C) Brick making
D) Cement manufacture
24. Cast iron contains carbon approximately:
A) 0.2–0.5%
B) 1–2%
C) 2–4%
D) 5–7%
25. Concrete is made of:
A) Cement and water
B) Cement, sand and water
C) Cement, sand, aggregate and water
D) Aggregate and water
26. Slump test measures:
A) Strength
B) Density
C) Workability
D) Durability
27. Water-cement ratio mainly affects:
A) Color
B) Strength
C) Cost
D) Weight
28. M20 concrete has characteristic compressive strength of:
A) 15 MPa
B) 20 MPa
C) 25 MPa
D) 30 MPa
29. Concrete curing is done to:
A) Increase hydration
B) Reduce weight
C) Change color
D) Increase density
30. Minimum curing period for OPC concrete is:
A) 3 days
B) 5 days
C) 7 days
D) 14 days
31. Bitumen is obtained from:
A) Coal
B) Petroleum
C) Limestone
D) Clay
32. Bitumen is mainly used for:
A) Flooring
B) Roofing and roads
C) Brickwork
D) Plastering
33. Waterproofing is commonly done using:
A) Lime
B) Clay
C) Bitumen
D) Gypsum
34. Gypsum is added to cement to:
A) Increase strength
B) Control setting time
C) Reduce cost
D) Increase color
35. Plaster of Paris is prepared from:
A) Limestone
B) Gypsum
C) Clay
D) Sand
36. White cement is generally used for:
A) Dams
B) Foundations
C) Decorative works
D) Pavements
37. Which glass is used for safety glazing?
A) Sheet Glass
B) Float Glass
C) Toughened Glass
D) Plate Glass
38. Main constituent of glass is:
A) Silica
B) Lime
C) Clay
D) Gypsum
39. The coloring ingredient in paint is:
A) Vehicle
B) Solvent
C) Pigment
D) Drier
40. Primer is applied before painting to:
A) Increase thickness
B) Improve adhesion
C) Change color
D) Waterproof surface
41. Distemper is mainly used on:
A) Steel surfaces
B) Wooden surfaces
C) Interior walls
D) Roofs
42. Varnish is generally applied on:
A) Concrete
B) Stone
C) Timber
D) Brickwork
43. Which stone is commonly used for flooring?
A) Granite
B) Laterite
C) Basalt
D) Shale
44. Marble is classified as:
A) Igneous rock
B) Sedimentary rock
C) Metamorphic rock
D) Artificial stone
45. Laterite stone is generally found in:
A) Desert areas
B) Coastal areas
C) Snow regions
D) Mountain peaks
46. Which admixture accelerates setting of concrete?
A) Retarder
B) Plasticizer
C) Accelerator
D) Air Entraining Agent
47. Fly ash in concrete improves:
A) Workability
B) Shrinkage
C) Corrosion
D) Weight
48. AAC blocks stand for:
A) Air Added Concrete Blocks
B) Autoclaved Aerated Concrete Blocks
C) Automatic Aggregate Concrete Blocks
D) Aerated Aggregate Cement Blocks
49. Which material has the highest compressive strength?
A) Timber
B) Brick
C) Concrete
D) Steel
50. IS code for OPC 43 Grade Cement is:
A) IS 456
B) IS 10262
C) IS 8112
D) IS 383
Answer Key
Q. No. Answer Q. No. Answer
1 C 26 C
2 B 27 B
3 C 28 B
4 B 29 A
5 C 30 C
6 B 31 B
7 B 32 B
8 B 33 C
9 D 34 B
10 B 35 B
11 A 36 C
12 B 37 C
13 C 38 A
14 C 39 C
15 A 40 B
16 B 41 C
17 B 42 C
18 C 43 A
19 A 44 C
20 B 45 B
21 D 46 C
22 B 47 A
23 B 48 B
24 C 49 C
25 C 50 C
