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GATE BT 2024 | Question: 30

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Match the chemical (Column I) with its use (Column II).

\begin{array}{|c|c|c|}
\hline \text{Column I} & \text{Column II} \\
\hline \text{P. Diethylpyrocarbonate} & 1. \text{Chelation of magnesium ion during DNA purification}\\
\hline \text{Q. Cesium chloride} & 2. \text{Prevention of RNA degradation in aqueous environment}\\
\hline \text{R. Ethidium bromide} & 3. \text{Separation of DNA by density gradient centrifugation}\\
\hline \text{S. Ethylenediaminetetraacetic acid} & 4. \text{Staining of RNA in agarose gel} \\
\hline
\end{array}

  1. $\text{P-4; Q-1; R-3; S-2}$
  2. $\text{P-4; Q-3; R-2; S-1}$ 
  3. $\text{P-2; Q-1; R-4; S-3}$
  4. $\text{P-2; Q-3; R-4; S-1}$

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