In 2000 "B.C.", use of which element by Asians came into existence?
Which element was used by China around 900-500 B.C.?
Match the following.
Set -I Set -II
A) Nichrome 1) Pb, Bi,Sn,Cd
B) Type metal 2) Pb,Sb,Sn
C) Woods metal 3) Cu, Al, Zn
D) Devarda's alloy 4) Fe, Ni, Cr