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Materials and Construction-Data Intensity 3 Multiple Questions and Answers.
| 6. | Which of the following has the least carbon percentage ? | ||
| A. | Low carbon steel | ||
| B. | Mild steel | ||
| C. | Wrought iron | ||
| D. | White cast iron | ||
| 7. | Locomotive boiler tubes are made of ______ alloys? | ||
| A. | Arsenic copper | ||
| B. | Magnesium | ||
| C. | Aluminium | ||
| D. | Nickel | ||
| 8. | Wood is corroded by____? | ||
| A. | Hydrochloric acid | ||
| B. | SO2 (dry or wet) | ||
| C. | Chlorine (dry or wet) | ||
| D. | All of above | ||
| 9. | Pipes for bi-cycle frames are made of ___ steel? | ||
| A. | Hot rolled | ||
| B. | Chrome carbon | ||
| C. | Cold rolled | ||
| D. | Stainless | ||
| 10. | Fatigue strength of a material increases by__? | ||
| A. | Having notches in the specimen | ||
| B. | Rise in temperature | ||
| C. | Under stressing the specimen | ||
| D. | Having scratches on the surface | ||
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