Test for Unsaturation Pink colour of KMnOs disappears. _Iyake a little quantity of the given organic compound and add alkaline KMn0, and shake J the mixture for few seconds. Nas ScacGs [ols te As 2) | Take im! of the organic Reddish-brown colour of Teast ina test tube and | bromine disappears. add CCis to dissolve ii. Then add few drops of bromine dissolved in the organic solvent. 1 Presence of double or triple bond in the compound. os on dn Cotountess Presence of unsaturation. ‘ : ’ eee = cee < ~ = - Ba Ba Colo urtess alcoholic group | 1) | Take 2ml of sample and add __| Fruity smell Alcoholic group(-OH) equal volume of acetic acid and few drops of conc. H2GOu ina test tube and warm the test tube in water bath. is confirmed.2) | Take a dry test tube and add 1- 2m| of alcohol and add few drops of ceric ammonium nitrate reagent. SRon + (ve Test for Pheno! group 1) | Take few drops of phenol ina test tube and dissolve in 2mL of water. Add 1-2 drops of blue- —itmus solution, — 2) | Take Amt of neutral ferric chloride solution in a clean test- tube and add 2-3 drops of the given liquid. GAs OH + Fe eoeec N 3) | Place 2-3 crystals of NaNO; ina clean dry test tube and add 1g of phenol. Heat very gently for % minute and allow it to cool. Add about im! of conc.H2SO, and shake well. \dd water carefully. low add excess of NaOH R-on + RCOOH Formation of wine-red colouration. Conctas& p_COOR +H2O- eos Esker oe Presence of alcohol group(-OH) confirmed. pgfice overs] > satay be ae! vous aed extoun Blue litmus turns red Violet colouration us (re (cit) 3 Vide: comple A deep blue or deep green colouration Colour turns red Appearance of blue or green colour. ANH NOS May be phenolic or carboxylic (-COOH) group. Presence of phenolic group confirmed + BRO Presence of phenolic group confirmedon Sey “ Sine a gh ono > Neon +Co>on > new ae Sranphanahc aad) “6Lo >< e SedmphenGl erasers i Test for Carbonyl groups(Aldehydes and Take a litle of the organic compound, add ethanol until _| Formation of yellow or Presence of Carbonyl group the compound just dissolves. | range crystals Now add a few drops of 2,4- dinitro phenyl hydrazine solution. Cork and shake the mixture and allow it to stand for 5 minutes. We co + an pies “oom gtr <2 >en- cg nana sae ¥ Test for aldehydic(-CHO) group 3) | Dissolve about 0.5ml of the | Appearance of pink, red or Presence of aldehydic group given compound in alcohol | magneta colour confirmed ¥ and add iml of Schiff’s reagent. Shake and note the change in colour. | j | '2) | Take about 2ml of organic Appearance of shining silver | Presel Syppound ina test tube and mirror add Tollek’s reagent and add __ few drops of NaOH to it. Heat the test tube in a water bath for 4-5 minutes. + - cae RchO + D[Ag(visya) + 20H —O-> 2Ayd t Reece Sromor SN + Test for ketonic group 1) | Place 0.5 ml of the given liquid | Appearance of violet colour _| Presence of ketonic group in a clean test-tube and add which slowly fades confirmed ; ~ about 0.ig of finely powdered | 4 madinitro benzene. Add few drops of NaOH solution and shake the mixture. 2) | Take one ml of organic Appearance of red colour Presence of ketonic group compound ina dry test tube confirmed and add few drops of sodium nitroprusside solution and NaOH solution. che fon +H 5 ony Mens + Hao i I cngco-tas —o, [FeCOudg No. cy coc | [Fe con), Noy” 4 cHyco-0 is isCOCHs [Fe con), nay Mg 2O-Cy 0 Ral we 4