Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part8 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.DuraJomin contains |
| 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe |
| 92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg |
| 10% aluminium and 90% copper |
| 90% magnesium and 9% aluminium with some copper |
| 94% aluminium and 6% tin. |
2.Aluminium bronze contains |
| 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe |
| 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg |
| 10% aluminium and 90% copper |
| 90% magnesium and 9% aluminium with some copper |
| 10% aluminium and 90% tin. |
3.Following elements have face-centred cubic structure |
| gamma iron (910� to 1400�C), Cu, Ag, Au, Al, Ni, Pb, Pt |
| Mg, Zn, Ti, Zr, Br, Cd |
| a iron (below 910�C and between 1400 to 1539�C), W |
| all of the above |
| none of the above. |
4.Babbit metal is a |
| lead base alloy |
| tin base alloy |
| copper base alloy |
| all of the above |
| (a) and (c) above. |
5.Neutral solution is one which has pH value |
| greater than 7 |
| less than 7 |
| equal to 7 |
| pH value has nothing to do with neutral solution |
| none of the above. |
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