1. Consolidation of concrete should proceed ?

immediately after mixing

immediately after placing

before placing

before mixing

Answer: immediately after placing

Explanation:


2. The thickness of laminate boards vary from ?

12 to 15 mm

25 to 30 mm

5 to 12 mm

12 to 25 mm

Answer: 12 to 25 mm

Explanation:


3. Bituminous paint consists of bitumen dissolved in ?

spirit

naptha

linseed oil

either (a) or (b)

Answer: either (a) or (b)

Explanation:


4. The compressive strength of perforated bricks should not be less than ?

6 MN/m²

4 MN/m²

7 MN/m²

5 MN/m²

Answer: 7 MN/m²

Explanation:


5. The expansion of cement should not exceed ............ for any type of Portland cement ?

20 mm

15 mm

10 mm

5 mm

Answer: 10 mm

Explanation:


6. The moisture content in timber for framework should not exceed ?

15%

5%

20%

10%

Answer: 15%

Explanation:


7. The drier in an oil paint should not be more than ............ (by volume) ?

20%

15%

10%

5%

Answer: 10%

Explanation:


8. For the construction of retaining walls, a ........... stone must be used ?

heavy

hard

soft

any

Answer: heavy

Explanation: