Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 3
41. |
Dry saturated steam can be converted into superheated steam by |
A. |
increasing its cross-sectional area of flow. | B. |
passing it through a pressure reducing valve. | C. |
forcing it downwards through a vertical tube. | D. |
none of these |
Answer: Option B
Explanation:
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42. |
Pick out the wrong statement. |
A. |
Copper is the metal having the highest electronic conductivity. | B. |
Hardenability & weldability of metals are inversely related. | C. |
Covalant bonding formed by sharing of electrons is present in all semi-conductor materials. | D. |
Glass transition temperature applies to 'polymers' but not to 'glasses'. |
Answer: Option A
Explanation:
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43. |
Increasing sulphur content in pig iron tends to make it |
A. |
soft | B. |
hard | C. |
tough | D. |
ductile & malleable |
Answer: Option B
Explanation:
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44. |
Oxyacetylene reducing flame is used while carrying out welding on |
A. |
alloy steel | B. |
grey cast iron | C. |
mild steel | D. |
high carbon steel |
Answer: Option C
Explanation:
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45. |
M10 index of coke indicates its |
A. |
compressive strength. | B. |
hardness. | C. |
abrasion resistance. | D. |
impact strength. |
Answer: Option C
Explanation:
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