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प्रश्न
Which of the following is treated with chlorine to obtain bleaching powder?
(a) CaSO4
(b) Ca(OH)2
(c) Mg(OH)2
(d) KOH
उत्तर
Ca(OH)2
Bleaching powder (CaOCl2) is formed by passing chlorine gas over slaked lime [Ca(OH)2].
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संबंधित प्रश्न
Write the chemical name of bleaching powder and write its properties.
What is "baking powder"? How does it make the cake soft and spongy?
State two uses each of the following compounds:
Chlorine
What is bleaching powder?
What happens when bleaching powder reacts with dilute sulphuric acid? Give equation of the reaction involved.
State two important uses of bleaching powder.
A white powdery substance having strong smell of chlorine is used for disinfecting drinking water supply at waterworks. Identify the substance. Give its chemical name and write the chemical reaction for its preparation.
When chlorine and sodium hydroxide being produced during the electrolysis of brine are allowed to mix, a new chemical is formed. Name the chemical and write its uses.
CaOCl2 will liberate Cl2 gas in the presence of
(i) CO2
(ii) HCl
(iii) CO
(iv) NO
The reaction between MnO2 with HCl is depicted in the following diagram. It was observed that gas with bleaching abilities was released.
The chemical reaction between MnO2 and HCl is an example of:
