Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 26
6. |
In continuous casting process, graphite moulds are used with a view to providing |
A. |
heat resisting medium. | B. |
self lubricating qualities. | C. |
non-wetting surfaces. | D. |
chilling effect. |
Answer: Option B
Explanation:
|
7. |
Energy required to compress a hot gas as compared to cold gas will be |
A. |
more. | B. |
less. | C. |
same. | D. |
more or less depending upon the nature of the gas. |
Answer: Option A
Explanation:
|
8. |
In the commercial production of which of the following metals, matallothermic reduction is used ? |
Answer: Option B
Explanation:
|
9. |
New water wells are disinfected with chlorine in the form of |
A. |
sodium chloride | B. |
sodium hypochlorate | C. |
bleaching powder | D. |
aluminium chloride |
Answer: Option C
Explanation:
|
10. |
In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will |
A. |
decrease gradually. | B. |
increase gradually. | C. |
increase rapidly. | D. |
remain constant. |
Answer: Option B
Explanation:
|