Match the LIST-I with LIST-II
| LIST-I | LIST-II |
|---|---|
| Products | Microbes |
| A. Lactic acid | I. Clostridium butylicum |
| B. Citric acid | II. Acetobacter aceti |
| C. Butyric acid | III. Lactobacillus |
| D. Acetic acid | IV. Aspergillus niger |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A-III, B-IV, C-I, D-II
(A) Lactic acid — this matches (III) Lactobacillus. This bacterium turns sugars into lactic acid. The same bacteria turn milk into curd.
(B) Citric acid — this matches (IV) Aspergillus niger. This fungus is grown in industry to make citric acid.
(C) Butyric acid — this matches (I) Clostridium butylicum. This bacterium makes butyric acid during fermentation.
(D) Acetic acid — this matches (II) Acetobacter aceti. This bacterium makes acetic acid, the acid of vinegar.
Note: A similar question was also asked in CUET (UG) 2026 on 26-05-2026 (Slot 1) and on 24-05-2026 (Slot 2), in CUET (UG) 2025 on 13-05-2025 (Slot 1), in CUET (UG) 2024 on 19-07-2024 (Slot 1), and in CUET (UG) 2023 on 15-06-2023 (Slot 1), on 30-05-2023 (Slot 1) and on 28-05-2023 (Slot 1).