Step 1: Chemical reaction context
This is a reaction of calcium oxide with carbon dioxide to produce calcium carbonate and water. The correct reactant is calcium oxide, CaO, which reacts with CO_2 to form CaCO_3 (calcium carbonate) and H_2O (water).
Step 2: Final Answer
The correct chemical equation is:
\[
\text{CaO} + \text{CO}_2 \rightarrow \text{CaCO}_3 + \text{H}_2\text{O}
\]
\[
\boxed{\text{CaO}}
\]
Draw a memory drawing of any one of the following by pencil. The drawing should not be less than 15 cm:
\begin{enumerate}[(i)] \item Two Guavas with leaves \item Brinjal \item Two Tomatoes \end{enumerate} Keep in view the following points in drawing: \begin{enumerate}[(i)] \item Beauty of lines \hfill 06 marks \item Resemblance of figures \hfill 04 marks \end{enumerate}
Draw a memory drawing of any one of the following by pencil. The drawing should not be less than 15 cm:
\begin{enumerate}[(i)] \item Copy and pen \item Kite \item Open book \end{enumerate} Keep in view the following points in drawing: \begin{enumerate}[(i)] \item Beauty of lines \hfill 06 marks \item Resemblance of figures \hfill 04 marks \end{enumerate}