BUILDING MATERIALS MCQS SET 46

BUILDING MATERIALS MCQS SET 46

1. The compound of Portland cement which contributes to the strength after two to three years is
(A) Tri-calcium silicate 
(B) Di-calcium silicate
(C) Tri-calcium aluminate
(D) Tetra-calcium alumino ferrite
Answer: Option B

2. Bessemer process is used for the manufacture of
(A) Pig iron
(B) Cast iron
(C) Wrought iron
(D) Steel
Answer: Option D

3. Which one of the following is an air binding material?
(A) Gypsum
(B) Acid-resistant cement
(C) Quick lime
(D) All of these
Answer: Option D

4. A good quality stone absorbs water less than
(A) 5 %
(B) 10 %
(C) 15 %
(D) 25 %
Answer: Option A

5. The slag which floats on the surface of the molten iron generally contains
(A) Lime (CaO) 45%
(B) Silica (SiO2) 35%
(C) Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%
(D) All the above
Answer: Option D

6. For the manufacture of plywood, veneers are placed so that grains of adjacent veneers
(A) Run at right angles
(B) Parallel
(C) Inclined at 45°
(D) Inclined at 60°
Answer: Option A

7. The commonly used drying oil for oil paints, is
(A) Olive oil
(B) Linseed oil
(C) Kerosene oil
(D) Acetate of lead
Answer: Option D

8. Initial setting of cement is caused due to
(A) Tri-calcium silicate
(B) Di-calcium silicate
(C) Tri-calcium aluminate
(D) Tetra calcium alumino ferrite
Answer: Option C

9. Wrought iron is manufactured from pig iron by
(A) Refining
(B) Pudding
(C) Shingling
(D) All the above
Answer: Option D

10. Fibre boards can be
(A) Distempered
(B) Painted
(C) Painted and distempered
(D) Used for furniture
Answer: Option D