MCQ
Bullet-proof steel alloy is prepared by using
- A$Sc$
- B$Ni$
- ✓$Zr$
- D$Zn$
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$2CHI_3 + 6Ag \to 6AgI(s) + C_2H_2(g)$
$(A)\,S_{\left( g \right)}^ - \,\, \to \,\,S_{\left( g \right)}^{2 - }\,$
$(B)\,Na_{\left( g \right)}^ + \, + \,Cl_{\left( g \right)}^ - \,\, \to \,\,NaCl\,(s)$
$(C)\,{N_{\left( g \right)}}\, \to \,\,N_{\left( g \right)}^ - $
$(D)\,Al_{\left( g \right)}^{2 + }\, \to \,\,Al_{\left( g \right)}^{3 + }$