Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 16
41.
A good abrasive
A. should be friable. B. should have low refractoriness. C. is made up of large size of crystals. D. should be soft.
Answer: Option A
Explanation:
42.
Out of the following, __________ pipe is the least corrosion resistant.
A. mild steel B. copper C. wrought iron D. stainless steel
Answer: Option C
Explanation:
43.
In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.
Answer: Option C
Explanation:
44.
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3 ) while the C.V. is same on weight basis (i.e., kcal/kg) ?
A. Propane and acetylene B. Propane and LPG C. Sewage gas and gobar gas D. B.F gas and coke oven gas
Answer: Option D
Explanation:
45.
Sheardising process is used for
A. surface coating. B. heat treatment of high speed steel. C. cold working on metals. D. none of these.
Answer: Option A
Explanation:
