Question

19. White metal contains:
75 % Cu & 25 % Zn
75 % Cu & 25 % Ni
(B)
(D)
75% Cu & 25% Sn
75 % Ni & 25% Zn
(A)
(C)
is hardened by:​

Answer 1

Explanation:

75% Ni and 25%Zn is an alloy named as white meta.

Answer 2

Explanation:

75% Ni

25%Zn

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