Step 1: Preparation:
Bleaching powder is produced by passing chlorine gas over dry slaked lime (Ca(OH)$_2$): \[ Ca(OH)_2 + Cl_2 \rightarrow CaOCl_2 + H_2O \] Step 2: Chemical Identity:
The compound formed is calcium oxychloride, whose formula is CaOCl$_2$.
Step 3: Uses:
Used for bleaching cotton and paper.
Used as a disinfectant in water treatment.
Used as an oxidizing agent in industries.
Step 4: Final Answer:
The chemical formula of bleaching powder is CaOCl$_2$.
Match the amino acid given in List-I with their one-letter code given in List-II
\[ \begin{array}{|l|l|} \hline \textbf{Name of amino acid} & \textbf{One-letter code} \\ \hline (A) \; \text{Lysine} & (I) \; W \\ \hline (B) \; \text{Tryptophan} & (II) \; Q \\ \hline (C) \; \text{Tyrosine} & (III) \; K \\ \hline (D) \; \text{Glutamine} & (IV) \; Y \\ \hline \end{array} \]