Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 6
| 46. |
Lead is poured into the joint between two- __________ pipes. |
| A. |
mild steel | | B. |
concrete | | C. |
cast iron | | D. |
asbestos cement |
Answer: Option C
Explanation:
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| 47. |
The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6 ) |
Answer: Option A
Explanation:
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| 48. |
Age hardening is connected with |
| A. |
babbit metal | | B. |
gun metal | | C. |
stainless steel | | D. |
duralumin |
Answer: Option D
Explanation:
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| 49. |
With decrease in the grain size of a material, its creep resistance |
| A. |
increases. | | B. |
decreases. | | C. |
remains constant. | | D. |
either (a) or (b) ; depends on the material. |
Answer: Option C
Explanation:
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| 50. |
__________ rubber is generally used for making 'O' rings used for vacuum sealings. |
| A. |
Natural | | B. |
Neoprene | | C. |
Butadiene | | D. |
Nitrile |
Answer: Option B
Explanation:
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