BUILDING MATERIALS MCQS SET 53

BUILDING MATERIALS MCQS SET 53

1. Pegmatite is a/an
(A) Intrusive igneous rock
(B) Extrusive igneous rock
(C) Sedimentary rock
(D) Metamorphic rock
Answer: Option A

2. Dorry's testing machine is used for
(A) Crushing test of stone
(B) Hardness test of stone
(C) Impact test of stone
(D) Water absorption test
Answer: Option B

3. Dolomite is a lime stone which contains carbonate of magnesia upto
(A) 15 %
(B) 20 %
(C) 25 %
(D) 45 %
Answer: Option D

4. The portion of the brick cut across its width and having its length equal to that of a full brick, is
known as
(A) Closer
(B) Queen closer
(C) King closer
(D) Prince closer
Answer: Option B

5. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
(A) 20
(B) 15
(C) 5
(D) 0
Answer: Option D

6. For a 50 kg cement bag water required, is
(A) 16.5 litres
(B) 18.5 litres
(C) 20.5 litres
(D) 22.5 litres
Answer: Option D

7. Slump test for concrete is carried out, to determine
(A) Strength
(B) Durability
(C) Workability
(D) Water content
Answer: Option C

8. The frog of a brick is normally made on its
(A) Top face
(B) Bottom face
(C) Longer face
(D) Shorter side
Answer: Option A

9. Granite mainly composed of quartz and feldspar particles, is obtained from
(A) Sedimentary rocks
(B) Metamorphic rocks
(C) Igneous rocks
(D) All the above
Answer: Option C

10. Pig iron obtained from the furnace which is properly provided with fuel at a very high  temperature, is called
(A) Bessemer pig
(B) Grey or foundry pig
(C) White or forge pig
(D) Mottled pig
Answer: Option B