Etard reaction: reagent or product

1. A.
   Benzal chloride
2. B.
   Benzaldehyde
3. C.
   Benzyl alcohol
4. D.
   Benzoic acid

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1. A.
   Chromium chloride
2. B.
   Chromyl chloride
3. C.
   Chromium oxide
4. D.
   Chromic acid

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1. A.
   Acetic anhydride
2. B.
   Anhydrous aluminum chloride
3. C.
   DIBAL-H
4. D.
   Chromyl chloride

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1. A.
   Benzal chloride
2. B.
   Benzaldehyde
3. C.
   Benzyl alcohol
4. D.
   Benzoic acid

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1. A.
   $\mathrm{SnCl_2.HCl}$
2. B.
   $\mathrm{CrO_3}$
3. C.
   $\mathrm{Pd\text{-}BaSO_4}$
4. D.
   $\mathrm{CrO_2Cl_2}$

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