NEET · Biology · STD 12 - 8. microbes in human welfare

A good producer of citric acid is

A Clostridium
B Saccharomyces
C Aspergillus
D Pseudomonas.

Verified Solution

Answer & Solution

Correct Answer

(C) Aspergillus

Step-by-step Solution

Detailed explanation

(c) : Aspergillus niger produces citric acid,Clostridium butylicum produces butyric acid, Saccharomyces is used for commercial production of ethanol, Pseudomonas produces alkaline proteases.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the following joints with the bones involved

\((a)\) Gliding joint	\((i)\) Between carpal and metacarpal of thumb
\((b)\) Hinge joint	\((ii)\) Between Atlas and Axis
\((c)\) Pivot joint	\((iii)\) Between the carpals
\((d)\) Saddle joint	\((iv)\) Between Humerus and Ulna.

Select the correct option from the following

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