Q21. Which is the process of mixing cement, sand and water?
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Q22. The initial setting time of cement is the time from mixing to:
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Q23. Which natural fibre is used for reinforcing plaster?
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Q24. Which of these is used in concrete as a mineral admixture?
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Q25. Which of the following bricks absorb less than 20% water?
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Q26. Which is a property of good building stone?
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Q27. The most commonly used cement is:
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Q28. Which timber defect is due to fungal attack?
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Q29. Which is a thermoplastic building material?
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Q30. What is the purpose of sand in concrete?
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Q31. The term “workability” in concrete refers to:
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Q32. Why is aggregate grading important?
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Q33. Which timber species is commonly used in construction?
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Q34. Which pigment is used in paints for better UV protection?
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Q35. Which of the following is considered a lightweight aggregate?
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Q36. Moisture content in wood is expressed as:
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Q37. Which is used as a water reducing agent in concrete?
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Q38. Which type of stone is widely used in ornamental work?
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Q39. Ashlar masonry is:
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