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प्रश्न
Duralumin is an alloy with composition:
P Al and Mg
Q Al, Cu and Mg
R Al and Mn
पर्याय
Only Р
Only Q
Both P and R
Only R
MCQ
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उत्तर
Only Q
Explanation:
Duralumin ia an alloy with composition of Aluminium (95%), Copper (4%) and Magnesium (0.5%).
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