| 1. | Enamel paint is made by adding ? | |
|
white lead in lacquer
|
||
|
white lead in varnish
|
||
|
bitumen in varnish
|
||
|
zinc white in spirit A
|
||
View Answer
Discuss in Forum
Report Question| 2. | In order to dry the quarry sap of a freshly quarried stone, it should be exposed to open air for period of ? | |
|
four months
|
||
|
one month
|
||
|
two years
|
||
|
six to twelve months
|
||
| 3. | A first class brick should not absorb water more than................. of its own dry weight after 24 hours immersion in cold water ? | |
|
5%
|
||
|
10%
|
||
|
15%
|
||
|
20%
|
||
| 4. | For R.C.C. construction, the maximum size of coarse aggregate is limited to ? | |
|
25 mm
|
||
|
20 mm
|
||
|
10 mm
|
||
|
15 mm
|
||
| 5. | The bricks after burning in kilns require about ............. days ? | |
|
10
|
||
|
4
|
||
|
12
|
||
|
8
|
||
| 6. | The specific surface (in cm/g) of a good Portland cement should not be less than ? | |
|
2250
|
||
|
500
|
||
|
3200
|
||
|
1100
|
||
| 7. | The maximum water-cement ratio for durable concrete is ? | |
|
0.6
|
||
|
0.8
|
||
|
0.4
|
||
|
0.2
|
||
| 8. | The shrinkage of ordinary concrete is about ? | |
|
0.3 to 0.6 mm/m
|
||
|
1.2 to 2.1 mm/m
|
||
|
0.1 to 0.3 mm/m
|
||
|
0.6 to 1.2 mm/m
|
||
| 9. | The pigment in paints is mixed to give desired ? | |
|
durability
|
||
|
appearance
|
||
|
colour
|
||
|
smoothness
|
||
| 10. | The commonly used solvent in oil paints is ? | |
|
naptha
|
||
|
turpentine
|
||
|
either (a) or (b)
|
||
|
none of these
|
||