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- Subject
- Building Materials and Constructioncivil-engineering-mcqs › building-materials-and-construction
- Published
- 9 Jan 2019
- Last updated
- 28 May 2026
Explanation
In brick earth, silica is a valuable constituent that provides strength, while alkalis are harmful impurities that can cause defects. Therefore, the correct pair is silica (useful) and alkalis (harmful).
More Building Materials and Construction MCQs
Practice related questions from the same subject.
- 1.What are the benefits of having the correct amount of entrained air in concrete?
- 2.How does cast iron compare to mild steel in terms of compressive and tensile strengths?
- 3.How does double Flemish bond differ from English bond in terms of structure?
- 4.What is the maximum allowable differential settlement for foundations constructed on sandy soils?
- 5.Which type of footing is designed to transfer substantial loads from steel columns to the ground?
- 6.In a collar beam roof, where is the horizontal tie typically located?
- 7.In stair construction, what does the term 'string' refer to?
- 8.What is the minimum recommended number of steps in a flight of stairs?
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