Q. Which one of the following pairs is wrongly matched?
A) yeast - ethanol
B) streptomycetes - antibiotic
C) coliforms - vinegar
D) methanogens - gobar gas
Explanation
[Solution from source] Vinegar (acetic acid) is produced by Acetobacter aceti, not by coliforms; coliforms are gut bacteria used as indicators of faecal contamination. Yeast makes ethanol, Streptomyces makes antibiotics and methanogens produce biogas, so those pairs are correct. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.