Discussion
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- Question
Which of the following stainless steels is non-magnetic?
Options- A. Ferritic
- B. Martensitic
- C. Austenitic
- D. None of these
- Correct Answer
- Austenitic
- 1. German silver in an alloy of
Options- A. copper, nickel and zinc.
- B. copper, aluminium and silver.
- C. silver, zinc and aluminium.
- D. silver, nickel and zinc. Discuss
- 2. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of
Options- A. tungsten, vanadium and chromium
- B. tungsten, chromium and vanadium
- C. vanadium, chromium and tungsten
- D. chromium, tungsten and vanadium Discuss
- 3. Nickel (56%) and molybdenum (17%) alloys are called
Options- A. monel
- B. hastealloy C
- C. inconel
- D. bronzes Discuss
- 4. Babbit metal used for bearings is a____base alloy.
Options- A. tin
- B. lead
- C. aluminium
- D. copper Discuss
- 5. Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by
Options- A. dilute HCI
- B. acetic acid
- C. concentrated H2SO4
- D. none of these Discuss
- 6. Invar used in thermocouples is an alloy of nickel and
Options- A. iron
- B. copper
- C. chromium
- D. lead Discuss
- 7. White cast iron is not
Options- A. malleable
- B. whitish in color
- C. brittle
- D. strong and hard Discuss
- 8. Heavy duty bearings are usually made of
Options- A. white metal
- B. phosphorous bronze
- C. monel
- D. zinc Discuss
- 9. Ceramic recuperators are generally made of
Options- A. silicon carbide.
- B. calcium carbide.
- C. fireclay bricks.
- D. high alumina bricks. Discuss
- 10. The metals occuring at the lower most position in the electromotive series
Options- A. do not resist corrosion.
- B. resist corrosion very strongly.
- C. are very brittle.
- D. are heat insulators. Discuss
Materials and Construction problems
Search Results
Correct Answer: copper, nickel and zinc.
Correct Answer: tungsten, chromium and vanadium
Correct Answer: hastealloy C
Correct Answer: tin
Correct Answer: acetic acid
Correct Answer: iron
Correct Answer: malleable
Correct Answer: white metal
Correct Answer: silicon carbide.
Correct Answer: resist corrosion very strongly.
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