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Subjects
Science State Board
Class 10
Periodic Classifications of elements
Alloys
12.
Textbook and previous objective type questions
Exercise condition:
4
m.
Choose the correct answers:
1.
The components of duraluminium are
(Al, Mg, Mn, Ce)
(Al, Mg, Mn, Cu)
(Ab, Ms, Mu, Ca)
(Al, Ag, Mn, Cu)
2.
__________ are called coinage metals.
Copper, Silver, and Iron
Copper, Silver, and Tin
Copper, Zinc, and gold
Copper, Silver, and Gold
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