chemical-engineering-basics
1.Which one of the following is incombustible ?
A. H2
B. CCl4
C. C2H2
D. S
| 2. |
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used. |
| A. |
hard |
| B. |
soft |
| C. |
silicon carbide |
| D. |
aluminium oxide |
|
| 3. |
Tin based white metals are used, where bearings are subjected to |
| A. |
high pressure & load. |
| B. |
low pressure & load. |
| C. |
high temperature. |
| D. |
large surface wear. |
|
| 4. |
Friction factor for fluid flow in pipe does not depend upon the |
| A. |
pipe length. |
| B. |
pipe roughness. |
| C. |
fluid density & viscosity. |
| D. |
mass flow rate of fluid. |
|
| 5. |
All of the following alloying elements of steel increases hardness but sacrifice ductility, except |
| A. |
nickel |
| B. |
vanadium |
| C. |
molybdenum |
| D. |
chromium |
|
