BUILDING MATERIALS MCQS SET 41

BUILDING MATERIALS MCQS SET 41

1. Pick up the correct statement from the following:
(A) The percentage of absorption for firebricks varies from 5 to 10
(B) The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
(C) Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
(D) All the above
Answer: Option D

2. Good quality cement contains higher percentage of
(A) Tri-calcium silicate
(B) Di-calcium silicate
(C) Tri-calcium aluminate
(D) Tetra calcium alumino ferrite
Answer: Option A

3. Laterite is a/an
(A) Volcanic rock
(B) Argillaceous rock
(C) Calcareous rock
(D) Siliceous rock
Answer: Option B

4. Seasoning of timber is essential to remove
(A) Knots from timber
(B) Sap from timber
(C) Twisted fibre from timber
(D) Roughness of timber
Answer: Option B

5. The term frog means
(A) An apparatus to lift the stone
(B) A depression on a face of brick
(C) Vertical joint in a brick work
(D) Soaking brick in water
Answer: Option B

6. The presence of sand in brick earth prevents:
(A) Cracking of bricks
(B) Shrinkage of bricks
(C) Warping of bricks
(D) None of these
Answer: Option C

7. Refractory bricks are
(A) Neutral refractory bricks
(B) Acid refractory bricks
(C) Basic refractory bricks
(D) All the above
Answer: Option D

8. A prime coat is given to steel work with
(A) An oxide of iron paint
(B) A mixture of white lead and lead paint
(C) A special paint
(D) Cement paint
Answer: Option B

9. Teak wood is suitable for
(A) Sports articles
(B) Furnitures
(C) Railway sleepers
(D) All the above
Answer: Option B

10. Elastomers can extend upto
(A) Five times their original dimensions
(B) Seven times their original dimensions
(C) Ten times their original dimensions
(D) Three times their original dimensions 
Answer: Option C