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MATCH THE COLUMNS
Match the columns with their correct combinations:
\begin{tabular}{|c|l|c|l|}
\hline \multicolumn{2}{|c|}{ Column-I } & \multicolumn{2}{c|}{ Column-II } \\
\hline A. & \( \begin{array}{l}\text { Formation of oxy- } \\
\text { haemoglobin }\end{array} \) & p. & \( \begin{array}{l}\text { Due to high pO } 2 \text { in } \\
\text { the alveoli }\end{array} \) \\
\hline B. & Fibrosis & q. & \( \begin{array}{l}\text { Due to low } \\
\text { intra-pulmonary } \\
\text { pressure }\end{array} \) \\
\hline C. & \( \begin{array}{l}\text { Activation of chemo- } \\
\text { sensitive area }\end{array} \) & r. & \( \begin{array}{l}\text { Due long exposure } \\
\text { to dust }\end{array} \) \\
\hline D. & Inspiration & s. & \( \begin{array}{l}\text { Due to high } \mathrm{CO}_{2} \text { and } \\
\mathrm{H}^{+} \text {ions }\end{array} \) \\
\hline
\end{tabular}
(1) (A)-(q); (B)-(r); (C)-(p); (D)-(s)
(2) (A)-(q); (B)-(p); (C)-(r); (D)-(s)
(3) (A)-(q); (B)-(p); (C)-(s); (D)-(r)
(4) (A)-(p); (B)-(r); (C)-(s); (D)-(q)
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