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How is bleaching powder prepared? Write a chemical equation of the reaction involved in the preparation of bleaching powder.
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What happens when bleaching powder reacts with dilute sulphuric acid? Give equation of the reaction involved.
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State two important uses of bleaching powder.
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Which of the following is treated with chlorine to obtain bleaching powder?
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Consider the following substances:
NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
- Which two substances combine to form bleaching powder?
- Which four substances are utilised in the production of washing soda?
- Which compound represents plaster of Paris?
- Which compound is a part of baking powder?
- Which compound is used as an antacid?
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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.
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When chlorine and sodium hydroxide being produced during the electrolysis of brine are allowed to mix, a new chemical is formed. Name this chemical and write its uses.
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Brine is an ____________.
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CaOCl2 will liberate Cl2 gas in the presence of
(i) CO2
(ii) HCl
(iii) CO
(iv) NO
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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:
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Chlorine gas reacts with ____________ to form bleaching powder.
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Assertion (A): Reaction of Quicklime with water is an exothermic reaction.
Reason (R): Quicklime reacts vigorously with water releasing a large amount of heat.
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Write an equation to show the reaction between plaster of Paris and water.
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Plaster of Paris should be stored in a moisture-proof container. Explain why?
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What is the commercial name of calcium sulphate hemihydrate?
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Name a calcium compound which hardens on wetting with water.
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The chemical formula of plaster of Paris is ______.
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What will happen if heating is not controlled while preparing plaster of Paris?
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State a peculiar (or remarkable) property of plaster of Paris.
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