Match the following techniques or instruments with their usage:

Column - \(I\) Column - \(II\)

\((a)\) Bioreactor \((i)\) Separation of DNA fragments

\((b)\) Electrophoresis \((ii)\) Production of large quantities of products

\((c)\) \(PCR\) \((iii)\) Detection of pathogen, based on antigen-antibody reaction

\((d)\) \(ELISA\) \((iv)\) Amplification of nucleic acids

Select the correct option from following:

A \(( a )-( ii ),( b )-( i ),( c )-( iii ),( d )-( iv )\)
B \((a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)\)
C \((a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)\)
D \(( a )-( iv ),( b )-( iii ),( c )-( ii ),( d )-( i )\)

Verified Solution

Answer & Solution

Correct Answer

(C) \((a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)\)

Step-by-step Solution

Detailed explanation

The correct answer is option (3) as (a) in column i.e. bioreactor matches with (ii) production of large quantities of products. Electrophoresis is used for separation of DNA fragments \(so ,\) (b) matches with (i)

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.

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Column - \(I\)	Column - \(II\)
\((a)\) Bioreactor	\((i)\) Separation of DNA fragments
\((b)\) Electrophoresis	\((ii)\) Production of large quantities of products
\((c)\) \(PCR\)	\((iii)\) Detection of pathogen, based on antigen-antibody reaction
\((d)\) \(ELISA\)	\((iv)\) Amplification of nucleic acids