BUILDING MATERIALS MCQS SET 28

BUILDING MATERIALS MCQS SET 28

1. Formula for quick lime, is
(A) CaCO3
(B) Ca(OH)2
(C) CO3CO2
(D) None to these
Answer: Option A

2. The process of decarbonising the pig iron completely and then adding proper percentage of carbon
for manufacturing steel, is called
(A) Cementation process
(B) Crucible process
(C) Bessemer process
(D) Open hearth process
Answer: Option A

3. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by
weight of cement is
(A) 1
(B) 2
(C) 3
(D) 4
Answer: Option B

4. Which one of the following polymers is obtained from condensation polymerization?
(A) Phenol formaldehyde
(B) Carbamide
(C) Melamine-formaldehyde
(D) All of these
Answer: Option D

5. The portion of a brick cut to form angles other than right angles in plan, is known as
(A) Queen closer
(B) King closer
(C) Closer
(D) Squint brick
Answer: Option D

6. The moisture content in a well seasoned timber is
(A) 4 % to 6 %
(B) 10 % to 12 %
(C) 15 % to 20 %
(D) 100 %
Answer: Option B

7. The cement becomes unsound by the presence of excess
(A) Sulphur
(B) Magnesia
(C) Lime
(D) All of these
Answer: Option D

8. For one cubic metre of brick masonry, number of bricks required, is
(A) 400
(B) 425
(C) 450
(D) 500
Answer: Option D

9. Rapid hardening cement contains
(A) Tri-calcium silicate
(B) Tri-calcium aluminate
(C) Tetra-calcium alumino-ferrite
(D) Di-calcium silicate
Answer: Option A

10. In order of increasing percentage of silica, the correct sequence is
(A) Sandy clay, calcareous clay, pure clay
(B) Calcareous clay, pure clay, sandy clay
(C) Pure clay, sandy clay, calcareous clay
(D) None of these
Answer: Option B