| 1. | Which of the following statements is wrong ? | |
|
clay or alumina
|
||
|
A stone with large percentage of quartz is very soft
|
||
|
Felspar is a silicate of aluminium with varying amounts of potash, soda or lime
|
||
|
Quartz has a greasy lustre
|
||
View Answer
Discuss in Forum
Report Question| 2. | Slate in the form of tiles is used ? | |
|
as road metal
|
||
|
for the manufacture of cement
|
||
|
for paving
|
||
|
as an excellent roof covering material
|
||
| 3. | The specific gravity of sandstone is ? | |
|
2.95 to 3.4
|
||
|
1.1 to 1.8
|
||
|
1.8 to 2.65
|
||
|
2.65 to 2.95
|
||
| 4. | The process of mixing clay, water and other ingredients to make bricks, is known as ? | |
|
kneading
|
||
|
tempering
|
||
|
moulding
|
||
|
pugging
|
||
| 5. | Which of the following paint is highly resistant to fire ? | |
|
enamel pain
|
||
|
Aluminium paint
|
||
|
Asbestos paint
|
||
|
Cement paint
|
||
| 6. | Gneiss is chemically classified as ? | |
|
calcareous rock
|
||
|
silicious rock
|
||
|
argillaceous rock
|
||
|
none of these
|
||
| 7. | The constituent in lime which retard the slaking action and increase the rapidity of setting, ? | |
|
silica
|
||
|
sulphate
|
||
|
alumina
|
||
|
alkalies
|
||
| 8. | The most powerful explosive used in blasting is ? | |
|
dynamite
|
||
|
cordite
|
||
|
blasting power
|
||
|
gun cotton
|
||
| 9. | The indentation marks left on bricks during the process of moulding, are known as ? | |
|
marks
|
||
|
projections
|
||
|
frogs
|
||
|
fillets
|
||
| 10. | The soundness of cement is tested by ? | |
|
Le-chatelier method
|
||
|
air-permeability method
|
||
|
all of these
|
||
|
Vicat's apparatus
|
||