Match list I with list II. List I (Microorganism) — List II (Product): (a) Aspergillus niger (b) Acetobacter aceti (c) Clostridium butylicum (d) Lactobacillus (i) Acetic Acid (ii) Lactic Acid (iii) Citric Acid (iv) Butyric Acid
Answer: (C) (a)-(iii); (b)-(i); (c)-(iv); (d)-(ii). Answer: (c) (a)-(iii); (b)-(i); (c)-(iv); (d)-(ii) Solution: Per the NCERT list of organic-acid producers, Aspergillus niger yields citric acid, Acetobacter aceti yields acetic acid, Clostridium butylicum yields butyric acid, and Lactobacillus yields lactic acid.
- A.(a)-(ii); (b)-(iii); (c)-(i); (d)-(iv)
- B.(a)-(iv); (b)-(ii); (c)-(i); (d)-(iii)
- C.(a)-(iii); (b)-(i); (c)-(iv); (d)-(ii)✓
- D.(a)-(i); (b)-(ii); (c)-(iii); (d)-(iv)
Correct Answer
(C) (a)-(iii); (b)-(i); (c)-(iv); (d)-(ii)
Solution & Explanation
Answer: (c) (a)-(iii); (b)-(i); (c)-(iv); (d)-(ii) Solution: Per the NCERT list of organic-acid producers, Aspergillus niger yields citric acid, Acetobacter aceti yields acetic acid, Clostridium butylicum yields butyric acid, and Lactobacillus yields lactic acid. This gives a-(iii), b-(i), c-(iv), d-(ii). NCERT Reference: Ch 8, p.153, line 13 — "butyric acid and Lactobacillus (a bacterium) of lactic acid."