Which of the following is correct?

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(A, B, C, D) All the given options are correct compositions of the respective alloys.$A$. Gun metal: $Cu (88\%), Zn (2\%), Sn (10\%), Pb (0.5\%)$.$B$.

Vedclass · Accepted Answer

Gun metal : $Cu + Zn + Sn$

Vedclass · Answer

(A, B, C, D) All the given options are correct compositions of the respective alloys.$A$. Gun metal: $Cu (88\%), Zn (2\%), Sn (10\%), Pb (0.5\%)$.$B$. Duralumin: $Al (95\%), Cu (4\%), Mg (0.5\%), Mn (0.5\%)$.$C$. German silver: $Cu (50\%), Zn (30\%), Ni (20\%)$.$D$. Solder: $Pb (50\%), Sn (50\%)$.Since all options are factually correct,the question is likely a multiple-correct type or requires identifying the most standard representation.

List-$I$ (Industrial process)	List-$II$ (Application)
$(a)$ Haber's process	$(i)$ $HNO_{3}$ synthesis
$(b)$ Ostwald's process	$(ii)$ Aluminium extraction
$(c)$ Contact process	$(iii)$ $NH_{3}$ synthesis
$(d)$ Hall-Heroult process	$(iv)$ $H_{2}SO_{4}$ synthesis

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