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MODEL PAPER 3 — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryMODEL PAPER 31 Mark
MCQ
Lucas reagent is?
  • A
    anhydrous $\ce{PdCl_2}$ and conc $\ce{HCl}.$
  • B
    anhydrous $\ce{AlCl_3}$ and conc $\ce{HCl}.$
  • C
    anhydrous $\ce{CaC_2}$ and conc $\ce{HCl}.$
  • ✓
    anhydrous $\ce{ZnCl_2}$ and conc $\ce{HCl}.$
✓

Answer

Correct option: D.
anhydrous $\ce{ZnCl_2}$ and conc $\ce{HCl}.$
 "Lucas reagent" is a solution of anhydrous zinc chloride in concentrated hydrochloric acid.

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