Discussion
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- Question
Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.
Options- A. chromium
- B. nickel
- C. tungsten
- D. cobalt
- Correct Answer
- cobalt
- 1. Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
Options- A. karbate
- B. lead or glass
- C. fireclay bricks
- D. PVC Discuss
- 2. The hardest material just prior to diamond in Mho's scale is
Options- A. topax
- B. carborundum
- C. corrundum
- D. calcite Discuss
- 3. A suitable material of construction to use with fuming sulphuric acid is
Options- A. carbon steel
- B. stainless steel type 304
- C. nickel
- D. monel Discuss
- 4. Liquid ammonia is shipped in __________ containers.
Options- A. steel
- B. aluminium
- C. glass
- D. lead lined Discuss
- 5. 18/8 steel is a/an __________ stainless steel.
Options- A. austenitic
- B. ferritic
- C. martensitic
- D. none of these Discuss
- 6. Residual magnetism in steel for magnets is increased by the addition of
Options- A. nickel
- B. cobalt
- C. tungsten
- D. chromium Discuss
- 7. Constituents of stellite are
Options- A. zinc, copper and nickel.
- B. cobalt, chromium and tungsten.
- C. zinc, aluminium and nickel.
- D. nickel, cobalt and vanadium. Discuss
- 8. 'P' is the investment made on an equipment, 'S' is its salvage value and 'n is the life of the equipment in years. The depreciation for rath year by the sum-of years digit method will be
Options- A.
- B.
- C.
- D.
Discuss
- 9. Out of the following, the depreciation calculated by the __________ method is the maximum.
Options- A. diminishing balance
- B. straight line
- C. sum of the years digit
- D. sinking fund Discuss
- 10. Cost of instrumentation in a modern chemical plant ranges from __________ percent of the total plant cost.
Options- A. 5 to 10
- B. 20 to 30
- C. 40 to 50
- D. 60 to 70 Discuss
Materials and Construction problems
Search Results
Correct Answer: lead or glass
Correct Answer: corrundum
Correct Answer: monel
Correct Answer: glass
Correct Answer: austenitic
Correct Answer: cobalt
Correct Answer: cobalt, chromium and tungsten.
Correct Answer:
Correct Answer: diminishing balance
Correct Answer: 20 to 30
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