Q.Match List-I with List-II and select the correct answer using the code given below the lists. List-I (a) Compounds present in bones (b) Acid present in vinegar (c) Souring of milk (d) Ripening of fruits List-II 1. Lactic acid 2. Ethylene 3. Acetic acid 4. Calcium phosphate Code (a) (b) (c) (d)
Correct answer: 4