Question: What Is the Chemical Name of Bleaching Powder?
(This question was previously asked in MP Police SI exams and often appeared in various competitive exams.)
A. Calcium Hypochlorite
B. Calcium Oxychloride
C. Sodium Hypochlorite
D. Sodium Chloride
Answer: Option A
According to NCERT, the chemical name of bleaching powder is Calcium Oxychloride. It is represented by the formula Ca(OCl)Cl. It is manufactured by reacting chlorine gas with dry slaked lime (Ca(OH)₂).
Reaction:
Ca(OH)₂ + Cl₂ → Ca(OCl)Cl + H₂O
The following are the properties of Bleaching powder:
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Bleaching powder is a white powder with a strong chlorine smell.
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It is commonly used for disinfecting water, bleaching fabrics, and sanitizing areas.
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It is frequently mistaken for Calcium Hypochlorite, but it is chemically different.
This compound is an important oxidizing agent. It is used in both industrial and domestic cleaning. Its wide usage and simple preparation make it a common question in chemistry-related sections of competitive exams.
Candidates can check quick facts about bleaching powder in the table below:
| Feature | Detail |
| Common Name | Bleaching Powder |
| Chemical Name | Calcium Oxychloride |
| Chemical Formula | Ca(OCl)Cl |
| Prepared Using | Chlorine + Slaked Lime |
| Appearance | White Powder |
| Smell | Pungent Chlorine-like Odor |
| Common Uses | Disinfection, bleaching, sanitizing |
Candidates often get confused by this question. It is advised to follow the NCERT for any competitive exams.
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