1.

{:(1.,"Diamagnetic materials",(a),"Steel,Alnico"),(2.,"Paramagnetic materials",(b),"Bi, Sb,Cu"),(3.,"Ferromagnetic materials",(c),"Pt,Cr,Mn"),(4.,"Permanent magnets",(d),"Fe, Ni, Co etc.,"):}

Answer»

`{:("(1)","(2)","(3)","(4)"),(B,a,d,C):}`
`{:("(1)","(2)","(3)","(4)"),(c,d,a,b):}`
`{:("(1)","(2)","(3)","(4)"),(d,c,b,a):}`
`{:("(1)","(2)","(3)","(4)"),(b,c,d,a):}`

Solution :N/A


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