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- Question
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of
Options- A. segar cones.
- B. muffles for muffle furnaces.
- C. insulating bricks.
- D. crucibles used for melting of high purity metals.
- Correct Answer
- crucibles used for melting of high purity metals.
- 1. Thermistors are used in __________ devices.
Options- A. voltage measuring
- B. temperature measuring
- C. temperature compensating
- D. both(b)&(c) Discuss
- 2. The decay product of tritium (a beta emitter) is
Options- A. lithium
- B. helium
- C. deuterium
- D. hydrogen Discuss
- 3. Maximum allowable vapour velocity in a bubble cap tower is determined by the
Options- A. entrainment considerations.
- B. vapour density.
- C. diameter of the column.
- D. none of these. Discuss
- 4. Flow rate of a river is measured by a/an
Options- A. pitot tube
- B. vane meter
- C. kennison nozzle
- D. open weir Discuss
- 5. Which is not an alumino-silicate refractory?
Options- A. Fireclay bricks.
- B. Mullite bricks.
- C. Tar dolomite bricks.
- D. High alumina bricks. Discuss
- 6. The operating pressure drop range in a bag filter is about __________ mm water gauge.
Options- A. 50-150
- B. 5-10
- C. 500-1500
- D. 1500-2500 Discuss
- 7. Which of the following is not a non-metalliferous mineral?
Options- A. Calcite
- B. Fluorspar
- C. Quartz
- D. Cassiterrite Discuss
- 8. The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt.
Options- A. speed
- B. thickness
- C. length
- D. none of these Discuss
- 9. Tolerable limit of nitrogen oxides in air is __________ ppm.
Options- A. 0.1
- B. 1
- C. 5
- D. 25 Discuss
- 10. Which of the following elements is not included in the scope of market analysis?
Options- A. Competition from other manufactures.
- B. Product distribution.
- C. Opportunities
- D. Economics Discuss
More questions
Correct Answer: both(b)&(c)
Correct Answer: helium
Correct Answer: entrainment considerations.
Correct Answer: vane meter
Correct Answer: Tar dolomite bricks.
Correct Answer: 50-150
Correct Answer: Cassiterrite
Correct Answer: speed
Correct Answer: 5
Correct Answer: Economics
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