Discussion
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- Question
Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800?
Options- A. 50000
- B. 51600
- C. 49200
- D. 50800
- Correct Answer
- 50000
- 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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