List I | List II | ||
|---|---|---|---|
| A | Clostridium butylicum | I | Ethanol |
| B | Saccharomyces cerevisiae | II | Streptokinase |
| C | Trichoderma polysporum | III | Butyric acid |
| D | Streptococcus sp. | IV | Cyclosporin-A |
(A) Clostridium butylicum: This microorganism is known for producing butyric acid, a short-chain fatty acid.
(B) Saccharomyces cerevisiae: This yeast is widely used in fermentation processes to produce ethanol.
(C) Trichoderma polysporum: This fungus is used in the production of cyclosporin-A, an immunosuppressant drug.
(D) Streptococcus sp.: This bacterium produces streptokinase, an enzyme used in medical treatments to dissolve blood clots.
The correct matching is shown below:
\[ \begin{array}{|c|c|} \hline \textbf{Microorganism} & \textbf{Product} \\ \hline \textbf{A.} \ Clostridium\ butylicum & \text{Butyric Acid (III)} \\ \textbf{B.} \ Saccharomyces\ cerevisiae & \text{Ethanol (I)} \\ \textbf{C.} \ Trichoderma\ polysporum & \text{Cyclosporin-A (IV)} \\ \textbf{D.} \ Streptococcus\ sp. & \text{Streptokinase (II)} \\ \hline \end{array} \]
Thus, the correct match is:
\[ A \to III, \quad B \to I, \quad C \to IV, \quad D \to II \]
Explanation:
This concludes our solution.

Three identical heat conducting rods are connected in series as shown in the figure. The rods on the sides have thermal conductivity 2K while that in the middle has thermal conductivity K. The left end of the combination is maintained at temperature 3T and the right end at T. The rods are thermally insulated from outside. In steady state, temperature at the left junction is \(T_1\) and that at the right junction is \(T_2\). The ratio \(T_1 / T_2\) is 
