Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part6 : 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.A specimen of aluminium metal when observed under microscope shows |
| B.C.C. crystalline structure |
| F.C.C. crystal structure |
| H.C.P. structure |
| a complex cubic structure |
| orthorhombic crystalline structure. |
2.If a refractory contains high content of silicon, it means refractory is |
| acidic |
| basic |
| neutral |
| brittle |
| none of the above. |
3.Corrundum contains more than 95% |
| steel |
| A1203 |
| Si02 |
| MgO |
| german silver. |
4.The usual composition of a soldering alloy is |
| tin, lead and small percentage of an-timony |
| tin and lead |
| tin, lead and silver |
| tin and copper |
| tin, copper and lead. |
5.Steel made from phosphatic iron is |
| brittle |
| hard |
| ductile |
| tough |
| malleable. |
More Engineering Materials QUESTIONS AND ANSWERS available in next pages
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