Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 11
| 26. |
Heat transfer by radiation from a hot body will be most rapid, if its surface is __________ because of its higher emissivity. |
| A. |
white & rough | | B. |
black & rough | | C. |
white & polished | | D. |
black & polished |
Answer: Option B
Explanation:
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| 27. |
Reduction reaction involves the |
| A. |
loss of electrons. | | B. |
increase in oxidation number. | | C. |
gain of electrons. | | D. |
addition of oxygen. |
Answer: Option C
Explanation:
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| 28. |
Specific heat of an ideal gas depends upon its |
| A. |
molecular weight | | B. |
pressure | | C. |
temperature | | D. |
volume |
Answer: Option C
Explanation:
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| 29. |
In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is |
Answer: Option A
Explanation:
|
| 30. |
A __________ type pressure sensing element is commonly used in aneroid barometer. |
| A. |
capsule | | B. |
bellow | | C. |
spiral tube | | D. |
flat diaphragm |
Answer: Option A
Explanation:
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