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प्रश्न
Explain why chlorine is used for sterilising drinking water supply.
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उत्तर
Chlorine is a disinfectant used to sterilise the drinking water supply, killing disease-causing bacteria that the water or its pipes might contain.
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संबंधित प्रश्न
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
Which of the following salt has a blue colour and why?
CuSO4.5H2O or CuSO4
What are the two main ways in which common salt (sodium chloride) occurs in nature?
Why is sodium chloride required in our body?
Give the names and formulae of any two salts. Also name the acids and bases from which these salts may be obtained.
What is meant by ‘a family of salts’? Explain with examples.
The aqueous solution of one of the following salts will turn red litmus to blue. This salt is:
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH)2SO4
Which of these salts will give:
- acidic solutions?
- neutral solutions?
- basic solutions (or alkaline solutions)?
Write the name and formula of one salt which contains:
Two molecules of water of crystallisation.
name two salts which are acidic.
What is deliquescence? What name is given to the compounds exhibiting such property?
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
Name two carbonates which do not produce carbon dioxide on heating.
Sodium carbonate is a basic salt because it is a salt of a ____________.
Which of the following is not an acidic salt?
An aqueous solution of a salt turns blue litmus to red. The salt could be the one obtained by the reaction of ______.
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Ferric chloride
