Which gas is passed over dry slaked lime in the manufacture of bleaching powder?
Answer and explanation
Correct answer: Chlorine
Bleaching powder is manufactured by passing chlorine gas over dry slaked lime, calcium hydroxide. In simplified form, the process is represented as calcium hydroxide reacting with chlorine to produce bleaching powder along with other products. Thus option C is correct. Hydrogen, carbon dioxide, and oxygen are not the characteristic reactant gases used for this preparation, so they cannot explain the manufacture of bleaching powder.
Frequently asked questions
What is the correct answer to this question?
Chlorine
Why is this the correct answer?
Bleaching powder is manufactured by passing chlorine gas over dry slaked lime, calcium hydroxide. In simplified form, the process is represented as calcium hydroxide reacting with chlorine to produce bleaching powder along with other products. Thus option C is correct. Hydrogen, carbon dioxide, and oxygen are not the characteristic reactant gases used for this preparation, so they cannot explain the manufacture of bleaching powder.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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