Building Materials Exam Questions - Set 19 - ObjectiveBooks

Building Materials Exam Questions - Set 19

Practice Test: Question Set - 19


1. Second class bricks
    (A) Are of dark brown color
    (B) Produce a metallic sound when struck
    (C) Are well burnt
    (D) Are under burnt

2. Wrought iron contains carbon upto
    (A) 0.25 %
    (B) 1.0 %
    (C) 1.5 %
    (D) 2.0 %

3. The variety of pig iron used for manufacture of wrought iron, is
    (A) Bessemer pig
    (B) Grey or foundry pig
    (C) White forge pig
    (D) Mottled pig

4. Kaolin is chemically classified as
    (A) Metamorphic rock
    (B) Argillaceous rock
    (C) Calcareous rock
    (D) Siliceous rock

5. Sewer pipes are made of
    (A) Earthen ware
    (B) Stone ware
    (C) Refractory clay
    (D) All the above

6. The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
    (A) Cementation process
    (B) Crucible process
    (C) Bessemer process
    (D) Open hearth process

7. The rock generally used for roofing, is
    (A) Granite
    (B) Basalt
    (C) Slate
    (D) Pumice

8. The lime which contains mainly calcium oxide and slacks with water, is
    (A) Fat lime
    (B) Quick lime
    (C) Hydraulic lime
    (D) Poor lime

9. The standard size of masonry bricks, is
    (A) 18 cm × 8 cm × 8 cm
    (B) 19 cm × 9 cm × 9 cm
    (C) 20 cm × 10 cm × 10 cm
    (D) 21 cm × 11 cm × 11 cm

10. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
    (A) 15, 75, 10
    (B) 75, 10, 15
    (C) 10, 15, 75
    (D) 10, 75, 15

11. Knots in timber are
    (A) Defects caused by crushing fibres
    (B) Splits radiating from the centre
    (C) Speckled strains
    (D) Signs of branches cut off

12. Pick up correct statement from the following:
    (A) Fibre boards are used for thermal and acoustic control
    (B) Fibre boards are used for light weight standing members
    (C) Fibre boards are obtained by impregnating a resin product on fibres
    (D) All the above

13. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
    (A) Quick setting cement
    (B) Rapid hardening cement
    (C) White cement
    (D) Low heat Portland cement

14. Pick up the correct statement from the following:
    (A) Slaked lime contains calcium hydroxide
    (B) Quick lime contains calcium oxide
    (C) Slaked lime may be obtained from quick lime
    (D) All the above

15. The minimum compressive strength of 1st class bricks should be
    (A) 75 kg/cm2
    (B) 90 kg/cm2
    (C) 100 kg/cm2
    (D) 120 kg/cm2

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