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.Management Sciences
A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85-92% copper and rest tin with little lead and nickel
D. 70-75% copper and rest tin
E. 90% copper and 10% zinc
Related Mcqs:
- For the allotropic forms of iron, the points of arrest are __________________?
- A. the points where no further change oc-curs B. constant for all metals C. the points where there is no further flow of metal D. the points of discontinuity E. the points where major changes take place...
- Which of the following is the binding material in cemented carbides___________________?
- A. cobalt B. nickel C. vanadium D. iron E. carbon...
- The metallic structure of mild steel is_________________?
- A. body centred cubic B. face centred cubic C. hexagonal close packed D. cubic structure E. orthorhombic crystal...
- The following element can’t impart high strength at elevated temperature__________________?
- A. manganese B. magnesium C. nickel D. silicon E. none of the above...
- Addition of manganese to aluminium results in__________________?
- A. improvement of casting characteristics B. improvement of corrosion resistance C. one of the best known age and precipitation-hardening systems D. improving machinability E. none of the above...
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