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Name the salt which is used as a preservative in pickles, and in curing meat and fish.
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Name the raw material used for the production of caustic soda.
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Common salt is obtained from sea-water by the process of ______.
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Rock salt is mined just like ______.
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Complete and balance the following chemical equation:
\[\ce{NaCl_{(aq)} + H2O_{(l)} ->[Electricity]}\]
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Complete and balance the following chemical equation:
\[\ce{NaCl + NH3 + H2O + CO2 ->}\]
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How would you show that blue copper sulphate crystals contain water of crystallisation?
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Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.
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What happens when copper sulphate crystals are heated strongly? Explain with the help of an equation.
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What happens when a few drops of water are added to anhydrous copper sulphate? Explain with the help of an equation.
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Explain why chlorine is used for sterilising drinking water supply.
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What happens when a concentrated solution of sodium chloride (brine) is electrolysed? Write the equation of the reaction involved.
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Why is the electrolysis of a concentrated solution of sodium chloride known as chlor-alkali process?
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Name three products of the chlor-alkali process. State two uses of each of these products.
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Give the names and formulae of any two salts. Also name the acids and bases from which these salts may be obtained.
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What is meant by ‘a family of salts’? Explain with examples.
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What is meant by ‘hydrated’ salts? Explain with examples.
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Write the names, formulae and colours of any two hydrated salts.
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What will be the colour of litmus in an aqueous solution of ammonium chloride salt?
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