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- Question
Fusion point of an acidic refractory material is
Options- A. increased by the addition of basic oxides.
- B. reduced by the addition of basic oxides.
- C. not affected by the addition of basic oxides.
- D. always more than 2500°C.
- Correct Answer
- reduced by the addition of basic oxides.
- 1. Which of the following has the weakest intermolecular forces?
Options- A. Polyisoprene
- B. Nylon-66
- C. Polystyrene
- D. Bakelite Discuss
- 2. Which of the following is not the commercial name of polymethylmethacrylate (PMMA)?
Options- A. Perspex
- B. Lucite
- C. Plexiglass
- D. Teflon Discuss
- 3. Which of the following rubbers has the widest service temperature range (-75 to 275°C)?
Options- A. Butyl rubber
- B. Silicon rubber
- C. Nitrile rubber
- D. Silicone rubber Discuss
- 4. Which of the following polymers is used for making a non stick coating on frying pans?
Options- A. Bakelite
- B. Teflon
- C. Perspex
- D. PVC Discuss
- 5. Which of the following is not present in bagasse fibre?
Options- A. Cellulose
- B. Lignin
- C. Pentogens
- D. None of these Discuss
- 6. Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?
Options- A. H2 separation from coke oven gas
- B. Steam reforming of naphtha
- C. Cracking of natural gas
- D. Electrolysis of water Discuss
- 7. Which of the following gasifiers can be attached to coal based fertiliser plants?
Options- A. Lurgi (high pressure) gasifier.
- B. Kopper-Totzek gasifier.
- C. Gasifier working at 20 atm.
- D. Gasifier working at 40 atm. Discuss
- 8. Which of the following is not a mixed fertiliser?
Options- A. Nitrophosphate
- B. Calcium ammonium nitrate (CAN)
- C. Ammonium phosphate
- D. None of these Discuss
- 9. Which nutrient in fertiliser makes the plant stems stronger and increases branching?
Options- A. Nitrogen
- B. Phosphorous
- C. Potassium
- D. Calcium Discuss
- 10. Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?
Options- A. Nitrogeneous fertiliser
- B. Potassic fertiliser
- C. Phosphatic fertiliser
- D. None of these Discuss
More questions
Correct Answer: Polyisoprene
Correct Answer: Teflon
Correct Answer: Silicone rubber
Correct Answer: Teflon
Correct Answer: None of these
Correct Answer: Electrolysis of water
Correct Answer: Kopper-Totzek gasifier.
Correct Answer: Calcium ammonium nitrate (CAN)
Correct Answer: Phosphorous
Correct Answer: Nitrogeneous fertiliser
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