Which of the following is arranged in order of increasing melting point? (a) \( \mathrm{Zn}\math...

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Which of the following is arranged in order of increasing melting point?
(a) \( \mathrm{Zn}\mathrm{Cu}\mathrm{Ni}\mathrm{Fe} \)
(b) \( \mathrm{Fe}\mathrm{Ni}\mathrm{Cu}\mathrm{Zn} \)
(c) \( \mathrm{Ni}\mathrm{Fe}\mathrm{Zn}\mathrm{Cu} \)
(d) \( \mathrm{Cu}\mathrm{Zn}\mathrm{Fe}\mathrm{Ni} \)
\( P \)
W.
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