BUILDING MATERIALS MCQS SET 48

BUILDING MATERIALS MCQS SET 48

1. Dry rot
(A) Cracks the timber
(B) Reduces the strength of timber
(C) Reduces the timber to powder
(D) Spoils the appearance of timber
Answer: Option C

2. Pozzolana (or surkhi) is used in lime
(A) To impart hydraulicity
(B) To prevent shrinkage
(C) To decrease the cost of construction
(D) To decrease the setting time
Answer: Option A

3. The size of modular bricks, is
(A) 10 × 10 × 9 cm
(B) 19 × 9 × 9 cm
(C) 22.5 × 10 × 8.5 cm
(D) 22.5 × 8.0 × 9 cm
Answer: Option B
 
4. Plywood is obtained by gluing wooden sheets at
(A) 100 to 150 N/cm2
(B) 100 to 130°C
(C) Both (A) and (B)
(D) Neither (A) nor (B)
Answer: Option C

5. The low voltage porcelain is mainly used for
(A) Switch block
(B) Insulating tubes
(C) Lamp sockets
(D) All of these
Answer: Option D

6. The initial setting time of hydraulic lime, is
(A) 30 minutes
(B) 60 minutes
(C) 90 minutes
(D) 120 minutes
Answer: Option D

7. PVC stands for
(A) Plastic very compact
(B) Polythene vinyl chloride
(C) Polythene vinyl carbon
(D) Polythene vanadium carbide
Answer: Option B

8. Cement paints usually
(A) Contain hydrated lime
(B) Contain 5% to 10% colour pigments
(C) Contain 5% sodium chloride
(D) All the above
Answer: Option D

9. The kiln which may work throughout the year, is
(A) Clamp
(B) Bull's kiln
(C) Hoffman's kiln
(D) None of these
Answer: Option C

10. The main ingredient of a good quality brick earth, is
(A) Magnesia
(B) Lime
(C) Silica
(D) Alumina
Answer: Option D