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ChemistryClass 10ICSE

The electrolysis of an aqueous solution of sodium chloride gives us three products. Name them.

Three products obtained by the electrolysis of an aqueous solution of sodium chloride are chlorine gas(formed at anode), hydrogen gas (formed at the cathode) and sodium hydroxide solution (formed near the cathode)

ChemistryClass 10ICSE

Name the raw material used for production of caustic soda.

Common salt or sodium chloride is the raw material for making caustic soda. Caustic soda is sodium hydroxide is a versatile alkali used in the manufacture of paper.

ChemistryClass 10ICSE

Name the salt which is used as preservative in pickles, and in curing meat and fish.

Sodium chloride is used as preservatives in pickles and in curing meat and fish.

ChemistryClass 10ICSE

What name is given to the common salt which is mined from underground deposits? How was this salt mined?

Common salt is mined from the underground deposits called rock salt. The salt mined which is then undergone evaporation and make common salt.

ChemistryClass 10ICSE

Give any two uses of common salt (sodium chloride).

Sodium chloride is used in the manufacture of soap It is used in cooking food

ChemistryClass 10ICSE

Name three chemicals made from common salt or sodium chloride.

Sodium hydroxide, sodium carbonate and sodium hydrogen carbonate are the chemicals made from sodium chloride. The common names are caustic soda, washing soda, and baking soda.

ChemistryClass 10ICSE

Why is sodium chloride required in our body?

Sodium chloride is much required our body because for the working of nervous system, muscle movements and also for the production of hydrochloric acid

ChemistryClass 10ICSE

How is common salt obtained from sea water?

Common salt which is present in sea water can be obtained by the process of evaporation through sunlight which leaves crude common salt. Then it further get purified and will obtain pure salt.

ChemistryClass 10ICSE

Name the major salt present in sea water.

Sodium chloride is the major salt present in the sea water and also found as rock salt. It is called common salt which used in food stuffs.

ChemistryClass 10ICSE

What are the two main ways in which common salt (sodium chloride) occurs in nature?

Common salt which is called sodium chloride usually occurs naturally in sea water in dissolved form and also found in underground deposit as rock salt.

ChemistryClass 10ICSE

Write the chemical name and formula of (a) common salt and (b) caustic soda.

Sodium chloride is common salt or table salt which we use for food Caustic soda is sodium hydroxide is a versatile alkali used in the manufacture of paper

ChemistryClass 10ICSE

What is the common name of (a) NaHCO3 and (b) Na2CO3.10H2O

Baking soda, which is used as a base to neutralize It also used as mouth wash and many other household uses are there Washing soda is also known as sodium carbonate which is soluble in water and uses in dry soap powders. It helps to remove stains in clothes.

ChemistryClass 10ICSE

Which compound is used as an antacid in medicine: NaHCO3 or Na2CO3?

<p>Antacids help to neutralize the acid present in our stomach. NaHCO3 is used as an antacid. It helps to reduce the secretion of stomach acids</p>

ChemistryClass 10ICSE

Name an acid which is present in baking powder.

Tartaric acid is present in baking powder, which is a mixture of tartaric acid and sodium hydrogen carbonate.

ChemistryClass 10ICSE

Name the metal whose carbonate is known as washing soda.

Sodium is the metal whose carbonate is called washing soda. Washing soda is soluble in water and is used in dry soap powders. Na2CO3.10H2O is the chemical formula

ChemistryClass 10ICSE

Name a sodium compound which is a constituent of many dry soap powders.

Sodium carbonate decahydrate is the constituent of many dry soap powders. It is commonly known as washing soda. Na2CO3.10H2O is the chemical formula

ChemistryClass 10ICSE

Name a metal carbonate which is soluble in water.

Washing soda is soluble in water and is used in dry soap powders. It has a formula Na2CO3.10H2O

ChemistryClass 10ICSE

Name a calcium compound which hardens on wetting with water.

Plaster of Paris is the compound which hardens on wetting with water. It is chemically calcium sulphate hemihydrate.

ChemistryClass 10ICSE

Name the product formed when Cl2 and H2 produced during electrolysis of brine are made to combine.

When hydrogen and chlorine react with each other, hydrochloric acid is formed H2 + Cl2 &rarr; 2HCl

ChemistryClass 10ICSE

What is the commercial name of calcium sulphate hemihydrate?

The commercial name of calcium sulphate hemihydrate is plaster of Paris. It is prepared by heating gypsum at a temperature of 373K. CaSO4.1/2 H2O is the chemical formula.

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