Discussion
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- Question
In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.
Options- A. concentrate
- B. tailing
- C. middling
- D. none of these.
- Correct Answer
- middling
- 1. The unit of specific heat at constant pressure, Cp, in SI unit is
Options- A. W/m2°C
- B. J/kg°K
- C. W/m°K
- D. J/m3°K Discuss
- 2. __________ closure is the weakest enclosure for cylindrical vessels.
Options- A. Hemispherical
- B. Torispherical
- C. Conical or flat plate
- D. Elliptical Discuss
- 3. Solid content in most of the domestic sewage is about __________ percent.
Options- A. 0.001
- B. 0.1
- C. 5
- D. 10 Discuss
- 4. Particles having diameter greater than 75 ?m (micrometer = 10-6 mm) are called
Options- A. grit
- B. dust
- C. powder
- D. smoke Discuss
- 5. Furfural solvent extraction is used for upgrading (by dissolving aromatics)
Options- A. naphtha
- B. lubricating oils
- C. wax
- D. cracking feedstock Discuss
- 6. Profit is equal to revenue minus
Options- A. book value
- B. total cost
- C. operating cost
- D. none of these Discuss
- 7. Fresh water carrying pipelines in chemical industries are coloured with __________ color.
Options- A. sea green
- B. brown
- C. yellow
- D. red Discuss
- 8. Shear stress in a fluid flowing in a round pipe
Options- A. varies parabolically across the cross-section.
- B. remains constant over the cross-section.
- C. is zero at the centre and varies linearly with the radius.
- D. is zero at the wall and increases linearly to the centre. Discuss
- 9. A present sum of Rs. 100 at the end of one year, with half yearly rate of interest at 10%, will be Rs.
Options- A. 121
- B. 110
- C. 97
- D. 91 Discuss
- 10. Aniline point test of an oil qualitatively indicates the __________ content of an oil.
Options- A. paraffin
- B. olefin
- C. aromatic
- D. naphthene Discuss
More questions
Correct Answer: J/kg°K
Correct Answer: Conical or flat plate
Correct Answer: 0.1
Correct Answer: grit
Correct Answer: lubricating oils
Correct Answer: total cost
Correct Answer: sea green
Correct Answer: is zero at the centre and varies linearly with the radius.
Correct Answer: 121
Correct Answer: aromatic
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