Building Materials Questions - Set 14 - ObjectiveBooks

Building Materials Questions - Set 14

Practice Test: Question Set - 14

1. The slump recommended for mass concrete is about
    (A) 25 mm to 50 mm
    (B) 50 mm to 100 mm
    (C) 100 mm to 125 mm
    (D) 125 mm to 150 mm

2. For preparing porcelains, the clay should be
    (A) Sufficiently pure
    (B) Of high degree of tenacity
    (C) Of good plasticity
    (D) All the above

3. For melting one tonne of cast iron
    (A) 700 m3 air is required
    (B) 20 kg limestone is required
    (C) One quintal coke is required
    (D) All the above

4. Pick up the correct statement regarding low heat cement from the following:
    (A) It possesses less compressive strength
    (B) Its initial setting time is about one hour
    (C) Its final setting time is about 10 hours
    (D) All the above

5. Quick lime (or caustic lime)
    (A) Is obtained by the calcination of pure lime stone
    (B) Has great affinity to moisture
    (C) Is amorphous
    (D) All the above

6. The commonly used lime in white washing, is
    (A) White lime
    (B) Fat lime
    (C) Hydraulic lime
    (D) Quick lime

7. For slaking of 10 kg of CaO, the theoretical amount of water is
    (A) 2.2 kg
    (B) 1.5 kg
    (C) 3.2 kg
    (D) None of these

8. Plywood is made from
    (A) Common timber
    (B) Bamboo fibre
    (C) Teak wood only
    (D) Asbestos sheets

9. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
    (A) 10 %
    (B) 15 %
    (C) 20 %
    (D) 25 %

10. The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as
    (A) Quarrying of stones
    (B) Blasting of stones
    (C) Seasoning of stones
    (D) Dressing of stones

11. The hardest rock is
    (A) Marble
    (B) Diamond
    (C) Talc
    (D) Quartz

12. Wrought iron is used for
    (A) Structural works in beams
    (B) Small sized water pipes
    (C) Columns and struts
    (D) None to these

13. Pick up the correct statement from the following:
    (A) Corrugated sheet iron is made by passing plain sheets between grooved rollers
    (B) Strength and stiffness of corrugated sheets are considerably increased
    (C) Corrugated sheets are generally used on slanting roofs
    (D) All the above

14. The process of mixing clay, water and other ingredients to make brick is known as
    (A) Kneading
    (B) Moulding
    (C) Pugging
    (D) Drying

15. The type of steel used for precision levelling staff, is
    (A) Titanium steel
    (B) Carbon steel
    (C) Invar
    (D) Stainless steel

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