Question

What is the chemical formula of Bleaching Powder?

• A. \( NaHCO_3 \)
• B. \( CaCO_3 \)
• C. \( CaOCl_2 \)
• D. \( CaSO_4 \)

Hint:

Important compounds:
• Bleaching powder \( \rightarrow CaOCl_2 \)
• Baking soda \( \rightarrow NaHCO_3 \)
• Washing soda \( \rightarrow Na_2CO_3 \cdot 10H_2O \)

Answer 1

The Correct Option is C

Concept:
Bleaching powder is an important chemical compound used for:
• Disinfecting drinking water
• Bleaching cotton and paper
• Removing stains Its chemical name is: \[ \text{Calcium oxychloride} \] Chemical formula: \[ CaOCl_2 \]

Step 1: Recall the formula of bleaching powder.
Bleaching powder is represented as: \[ \boxed{CaOCl_2} \]

Step 2: Analyze all options carefully.
Option (A): \( NaHCO_3 \)
This is baking soda. Incorrect. Option (B): \( CaCO_3 \)
This is calcium carbonate. Incorrect. Option (C): \( CaOCl_2 \)
This is calcium oxychloride. Correct. Option (D): \( CaSO_4 \)
This is calcium sulphate. Incorrect.

Step 3: Choose the correct answer.
Hence, the chemical formula of bleaching powder is: \[ \boxed{CaOCl_2} \] Therefore, \[ \boxed{(3)\ CaOCl_2} \]