Civil Building Materials MCQ - Set 05 - ObjectiveBooks

Civil Building Materials MCQ - Set 05

Practice Test: Question Set - 05

1. Soundness of cement is tested by
    (A) Vicat's apparatus
    (B) Le-chatelier apparatus
    (C) Compressive strength testing apparatus
    (D) None of these

2. First class timber has an average life of
    (A) Less than one year
    (B) 1 to 5 years
    (C) 5 to 10 years
    (D) More than 10 years

3. Bitumen may be dissolved in
    (A) Carbondioxide
    (B) Water
    (C) Sodium chloride
    (D) Carbon disulphide

4. Which of the following ingredients of the brick earth enables the brick to retain its shape?
    (A) Alumina
    (B) Silica
    (C) Iron
    (D) Magnesia

5. Veneering means
    (A) Carving out designs on timber planks
    (B) Chemically treating timber planks
    (C) Thick layer of superior wood glued to inferior wood
    (D) Thin layer of superior wood glued to inferior wood

6. Number of bricks required for one cubic metre of brick masonry is
    (A) 400
    (B) 450
    (C) 500
    (D) 550

7. Which one of the following is used for preparing porcelain?
    (A) Clay
    (B) Feldspar
    (C) Quartz
    (D) All of these

8. The main ingredients of Portland cement are
    (A) Lime and silica
    (B) Lime and alumina
    (C) Silica and alumina
    (D) Lime and iron

9. Pick up the correct statement from the following:
    (A) Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
    (B) Cracked paints may be cured by removing paint and giving a fresh coat of paint
    (C) Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
    (D) All the above

10. After storage, the strength of cement
    (A) Decreases
    (B) Increases
    (C) Remains same
    (D) May increase or decrease

11. A bull nose brick is not used for
    (A) Rounding off sharp corners
    (B) Pillars
    (C) Decoration purpose
    (D) Arches

12. The most common admixture which is used to accelerate the initial set of concrete is
    (A) Gypsum
    (B) Calcium chloride
    (C) Calcium carbonate
    (D) None of the above

13. Chlorite, a green colour mineral is mainly derived from the decomposition of
    (A) Augite
    (B) Biotite
    (C) Hornblende
    (D) All of these

14. The ultimate tensile strength of structural mild steel is about
    (A) 160 N/mm²
    (B) 260 N/mm²
    (C) 420 N/mm²
    (D) 520 N/mm²

15. Asbestos
    (A) Is a natural fibrous mineral substance
    (B) Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
    (C) Contains iron oxide and alumina
    (D) All the above

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