VIVA VOCE 1. Definition of organic compound : Organic compound defined as the substances, which contain Carbon and Hydrogen with or without some more elements like Nitrogen, Sulphur, Helogen etc. 2. Why a Diethyl ether a good choice for an organic solvent in an acid-base extraction? Diethyl ether is considered a good organic extracting solvent because it has a low polarity, water being very polar. So the organic compounds dissolve more readily in Diethyl ether than water. 3. Huckel's rule : In order to be aromatic, a molecule must have a certain number of pi electrons (electrons with pi bonds, or lone pairs within p orbitals) within a closed loop of parallel, adjacent p orbitals. in 4n+2 n≠0 4. Process of solubility test : For Acid : RCOOH + NaHCO 3 → RCOONa + H 2 O + CO 2 sodium salt of carboxylic acid RCOONa + HCl → RCOOH + NaCl For Base