First slide

13th group or boron group

Question

Which statement is incorrect?

Moderate

A

Bell metal is an alloy of Cu and Sn
B

Solder is an alloy of Pb and Al
C

Pewter is an alloy of Pb and Sn
D

Rose metal is an alloy of Pb , Sn and Bi

Solution

Solder is an alloy of Pb and Sn .

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