BUILDING MATERIALS MCQS SET 52

BUILDING MATERIALS MCQS SET 52

1. Mild steel is used for
(A) Structural works in beams, joints and girders
(B) Small sized water pipes
(C) Columns and struts
(D) None of these
Answer: Option A

2. The most valuable timber may be obtained from
(A) Chir
(B) Shishum
(C) Sal
(D) Teak
Answer: Option D

3. Mastic asphalt is
(A) Acid resisting material
(B) Non-corrosive material
(C) Corrosive material
(D) Heating-resisting material
Answer: Option B

4. For lime concrete,
(A) Slump is 50 to 75 mm
(B) Flexural strength at 90 days is 0.2 N/mm2
(C) Compressive strength at 90 days is 1.5 N/mm2
(D) All the above
Answer: Option D

5. The material generally not used as extender in paints, is
(A) Powdered silica
(B) Gypsum
(C) Talc
(D) Zinc white
Answer: Option D

6. Pick up the non-inflammable plastic from the following:
(A) Cellulose acetate plastics
(B) Polyvinyl chloride plastics
(C) Phenol formaldehyde plastic
(D) Urea formaldehyde plastic
Answer: Option B

7. For light and ornamental casting, the most unsuitable pig iron, is
(A) Bessemer pig
(B) Grey or foundry pig
(C) White or forge pig
(D) Mottled pig
Answer: Option D

8. If the ore impurities is
(A) Clay, lime stone is used as flux
(B) Lime stone, clay is used as flux
(C) Quartz, lime stone and argillaceous iron ores are used as flux
(D) All the above
Answer: Option D 

9. The plastics prepared from Vinyl resin are
(A) Odourless
(B) Non-toxic
(C) Transparent
(D) All of these
Answer: Option D

10. A rock contains only one mineral. It is called
(A) Homogeneous
(B) Non-homogeneous
(C) Monomineralic
(D) Polymineralic
Answer: Option C