Building Materials problems
- 1. Chlorite, a green colour mineral is mainly derived from the decomposition of
Options- A. augite
- B. biotite
- C. horn blende
- D. All of these. Discuss
Correct Answer: augite
- 2. Index number expressing the relative sizes of both coarse and fine aggregates, is called
Options- A. proportioning of aggregates
- B. fineness modulus
- C. grading of aggregates
- D. none of these. Discuss
Correct Answer: fineness modulus
- 3. Lime stones are generally known as
Options- A. aqueous rocks
- B. sedimentary rocks
- C. stratified rocks
- D. all the above. Discuss
Correct Answer: all the above.
- 4. Dorry's testing machine is used for
Options- A. crushing test of stone
- B. hardness test of stone
- C. impact test of stone
- D. water absorption test. Discuss
Correct Answer: hardness test of stone
- 5. Priming consists of
Options- A. one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
- B. 8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
- C. one part of white lead, 8 parts of chalk and one part of linseed oil
- D. none to these. Discuss
Correct Answer: one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
- 6. The frog of a brick is normally made on its
Options- A. top face
- B. bottom face
- C. longer face
- D. shorter side. Discuss
Correct Answer: top face
- 7. Granite mainly composed of quartz and felsper particles, is obtained from
Options- A. sedimentary rocks
- B. metamorphic rocks
- C. igneous rocks
- D. all the above. Discuss
Correct Answer: igneous rocks
- 8. During smelting process, the combination of fuel in the furnace
Options- A. forms carbon dioxide
- B. carbon dioxide with carbon forms carbon mono-oxide
- C. carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
- D. all the above. Discuss
Correct Answer: all the above.
- 9. A bull nose brick is not used for
Options- A. rounding off sharp corners
- B. pillars
- C. decoration purpose
- D. arches. Discuss
Correct Answer: arches.
- 10. Percentage content of silica in window glass, is
Options- A. 40 to 45
- B. 50 to 55
- C. 60 to 65
- D. 70 to 75. Discuss
Correct Answer: 70 to 75.
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