Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 9
36. |
With increase in temperature, the electrical conductivity of a __________ decreases. |
A. |
semi-conductor | B. |
metal or alloy | C. |
dielectric | D. |
none of these |
Answer: Option A
Explanation:
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37. |
All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent. |
Answer: Option B
Explanation:
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38. |
Which of the following gases cause global warming ? |
A. |
Carbon monoxide | B. |
Carbon dioxide | C. |
Nitrogen | D. |
Ozone |
Answer: Option B
Explanation:
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39. |
Multistage compression of air as compared to single stage compression offers the advantage of |
A. |
power saving per unit weight of air delivered. | B. |
moisture elimination in the inter-stage cooler. | C. |
increased volumetric efficiency. | D. |
all (a), (b) & (c). |
Answer: Option D
Explanation:
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40. |
Fine grained steels have |
A. |
high brittleness | B. |
higher tendency to distort | C. |
high ductility | D. |
none of these |
Answer: Option C
Explanation:
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