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- Question
Very fine suspended and colloidal impurities are removed from water by a process called
Options- A. sedimentation
- B. coagulation
- C. disinfection
- D. softening
- Correct Answer
- coagulation
- 1. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Options- A. calcium sulphate
- B. sodium chloride
- C. sodium sulphate
- D. magnesium chloride. Discuss
- 2. The drug used in contraceptives is
Options- A. sulphadizene
- B. mestranol
- C. methyl salicylate
- D. pencillin Discuss
- 3. The combustion reaction, C + O2 = CO2, is
Options- A. exothermic
- B. endothermic
- C. autocatalytic
- D. none of these Discuss
- 4. Which of the following sugars is the sweetest?
Options- A. Glucose
- B. Fructose
- C. Sucrose
- D. Lactose Discuss
- 5. Oxidation of SO2 to SO3 is favoured by
Options- A. low temperature and low pressure.
- B. low temperature and high pressure.
- C. high temperature and low pressure.
- D. high temperature and high pressure. Discuss
- 6. Raw materials used for producing __________ cement does not contain iron oxide.
Options- A. waterproof
- B. slag
- C. white
- D. pozzolan Discuss
- 7. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
Options- A. poor oxidation stability and high gum forming tendency.
- B. greater tendency of decomposition at elevated temperature.
- C. hydrolysis tendency in presence of water.
- D. all (a), (b) and (c). Discuss
- 8. Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Options- A. callagen
- B. tannin
- C. molasses
- D. carbohydrate Discuss
- 9. Polycaprolactum is commercially known as
Options- A. nylon-6
- B. nylon-66
- C. dacron
- D. rayon Discuss
- 10. Claude process of gas liquefaction employs
Options- A. merely compression of gas beyond its critical pressure.
- B. Joule-Thomson expansion cooling.
- C. heat exchange with colder stream.
- D. adiabatic expansion against a piston or in a turbine. Discuss
Chemical Process problems
Search Results
Correct Answer: sodium chloride
Correct Answer: mestranol
Correct Answer: exothermic
Correct Answer: Fructose
Correct Answer: low temperature and high pressure.
Correct Answer: white
Correct Answer: all (a), (b) and (c).
Correct Answer: callagen
Correct Answer: nylon-6
Correct Answer: adiabatic expansion against a piston or in a turbine.
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