| 1. | A limestone is called found in seams of great thickness in non-crystalline texture with earthy appearance is called ? | |
|
granular limestone
|
||
|
compact limestone
|
||
|
magnesium limestone
|
||
|
kankar
|
||
View Answer
Discuss in Forum
Report Question| 2. | The metallic oxide used in the form of powder in a paint is called ? | |
|
extender
|
||
|
base
|
||
|
vehicle
|
||
|
drier
|
||
| 3. | The sand is mixed with lime mortar to ? | |
|
reduce cost
|
||
|
reduce setting time
|
||
|
improve strength
|
||
|
prevent shrinkage and cracking
|
||
| 4. | The type of brick suitable for panal walls for multi-storeyed buildings is ? | |
|
hollow bricks
|
||
|
perforated bricks
|
||
|
either (a) or (b)
|
||
|
none of these
|
||
| 5. | Which of the following statement is wrong ? | |
|
The pan tiles are similar to pot tiles, but are less curved
|
||
|
The pan tiles are comparatively heavier, stronger and durable than curved tiles
|
||
|
The fire bricks are generally used for lining kilns
|
||
|
none of the above
|
||
| 6. | The addition of pozzolana to Portland cement causes ? | |
|
less heat of hydration
|
||
|
increase in shrinkage
|
||
|
decrease in permeability
|
||
|
all of these
|
||
| 7. | According to Indian standard specifications, the temperature for curing is ? | |
|
5°C
|
||
|
10°C
|
||
|
27°C
|
||
|
42°C
|
||
| 8. | The lime which contains more than 30% of clayey impurities in the form of silica, alumina and iron oxide, is known as ? | |
|
poor lime
|
||
|
rich lime
|
||
|
hydraulic line
|
||
|
limestone
|
||
| 9. | Rich or fat lime ? | |
|
slakes rapidly with considerable evolution of heat
|
||
|
takes very long time to develop adequate strength
|
||
|
has high plasticity
|
||
|
all of these
|
||
| 10. | The main constituent of a Portland cement is ? | |
|
lime
|
||
|
alumina
|
||
|
iron oxide
|
||
|
alkalies
|
||