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12th Class Chemistry Sample Paper Chemistry Sample Test Paper-1

  • question_answer
      (a) Write a chemical equation examplifying Clemmension reduction.                                                                       2 (b) Write chemical test to distinguish the:                 (i)                                                                                                                                                                        (ii)                                                                                                                                          

    Answer:

                      (a) Clemmenson reduction:                                                                                                             2   (b) Phenol and benzoic acid:
    Benzoic acid Phenol
    Add sodium bicarbonate then is evolved. No change on addition of sodium bicarbonate.                                                                                        
      (ii) Acetophenone and benzaldehyde:
                    Acetophenone Benzaldehyde
    Iodoform test: Warm the compound on a water bath. Yellow crystal of iodoform is formed. (i) (ii) It gives no Iodoform test.                                                                                                          


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