What is the composition of Lucas reagent?
- AConcentrated $HCl +$ anhydrous $ZnCl_2$
- BDilute $HCl +$ hydrated $ZnCl_2$
- CConcentrated $HNO_3 +$ anhydrous $ZnCl_2$
- DConcentrated $HCl +$ anhydrous $MgCl_2$
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