| List I-Crystallizer-Unit operations | List II-Principle/Characteristics-Properties | ||
| A | Swenson‐walker crystallizer | I | Adiabatic evaporative cooling |
| B | Krystal crystallizer | II | Cooling alone |
| C | Vacuum crystallizer | III | Evaporation |
| D | Forced circulation type crystallizer | IV | Heat exchange, separation, circulation |
Choose the correct answer from the options given below: