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- Question
Which is almost absent in crude petroleum?
Options- A. Olefins
- B. Mercaptans
- C. Naphthenes
- D. Cycloparaffins
- Correct Answer
- Mercaptans
- 1. Gross & net calorific value is the same for
Options- A. blast furnace gas
- B. coke oven gas
- C. L.D. converter gas
- D. none of these Discuss
- 2. Nitrolime is chemically known as
Options- A. calcium nitrate
- B. ammonium nitrate
- C. calcium ammonium nitrate (CAN)
- D. none of these Discuss
- 3. Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten
Options- A. teflon
- B. bakelite
- C. SBR
- D. PVC Discuss
- 4. Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as
Options- A. photochemical smog.
- B. peroxy acetyl nitrate (PAN) or methyl nitrile.
- C. benzopyrene.
- D. poly acrylonitrile Discuss
- 5. Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to __________ and the cycle time (where, ? = filtrate viscosity Rm = filter medium resistance Rc = cake resistance ).
Options- A. ?
- B. 1/?
- C. 1/?
- D. 1/?2 Discuss
- 6. Which of the following is not accomplished by agitation of liquids in agitators?
Options- A. Dispersing gas in liquid.
- B. Blending of immiscible liquids.
- C. Dispersing immiscible liquid in form of emulsion.
- D. Suspending solid particles. Discuss
- 7. Ceramic recuperators compared to metallic recuperators for the same duty
Options- A. are lighter.
- B. occupy more space.
- C. are less costly.
- D. have higher pressure differential between flue gas & air side. Discuss
- 8. The main constituent of rock phosphate is
Options- A. mono-calcium phosphate
- B. di-calcium phosphate
- C. fluorspar
- D. none of these Discuss
- 9. Higher concentration of CO2 in atmosphere
Options- A. allows visible solar radiation (ultraviolet) of short wave-length to pass through.
- B. reflects and absorbs the longer wavelength (infra-red) radiations.
- C. prevents solar heat being radiated out completely, resulting in 'heat trap' i.e., global warming.
- D. all (a), (b) and (c). Discuss
- 10. The thermal stress in a metallic bar does not depend upon the
Options- A. changes in temperature.
- B. cross-sectional area.
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
More questions
Correct Answer: L.D. converter gas
Correct Answer: calcium ammonium nitrate (CAN)
Correct Answer: PVC
Correct Answer: peroxy acetyl nitrate (PAN) or methyl nitrile.
Correct Answer: 1/?
Correct Answer: Blending of immiscible liquids.
Correct Answer: occupy more space.
Correct Answer: di-calcium phosphate
Correct Answer: all (a), (b) and (c).
Correct Answer: cross-sectional area.
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