Observe the figures I and II and answer the following questions.
Match List I with List II
| LIST I | LIST II |
|---|---|
| A. Foam Breaker | I. D |
| B. Sterile Air | II. C |
| C. Steam for sterilisation | III. E |
| D. Flat bladed impeller | IV. G |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-II, B-IV, C-I, D-III
(A) Foam Breaker — this matches (II) C. The foam breaker sits on the top of the tank, where foam collects over the stirred culture.
(B) Sterile Air — this matches (IV) G. Sterile air enters at the bottom of the tank, so it rises through the whole culture.
(C) Steam for sterilisation — this matches (I) D. The steam pipe enters at the side of the tank and is used to sterilise it before the culture is added.
(D) Flat bladed impeller — this matches (III) E. The flat blades on the central shaft stir the culture, giving even mixing and oxygen throughout.