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Building Materials and Construction - Interview Questions and Answers

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11. Slate is formed by metamorphic action on
A. shale
B. lime stone
C. sand stone
D. granite
Explanation: ANSWER : : shale Explanation :
12. Sapwood consists of
A. innermost annular rings around the pith
B. portion of timber between heartwood and cambium layer
C. thin layers below the bark
D. thin fibre which extends from the pith outwards and holds the annular rings together
Explanation: ANSWER : : portion of timber between heartwood and cambium layer Explanation :
13. A good building stone should not absorb water more than
A. 5%
B. 10%
C. 15%
D. 20%
Explanation: ANSWER : : 5% Explanation :
14. A heavy stone is suitable for
A. arches
B. rubble masonry
C. roads
D. retaining walls
Explanation: ANSWER : : retaining walls Explanation :
15. Which of the following metamorphic rocks has the most weather resisting characteristics?
A. marble
B. quartzite
C. slate
D. lime stone
Explanation: ANSWER : : quartzite Explanation :
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