We use various salts in our daily life. A list of some of these salts and their chemical formulae are given in the table. Analyse the table and complete. Name of the salt Chemical name Chemical formula Use Table salt Sodium chloride NaCl Making of freezing mixture Sylvine/ Muriate of potash Potassium chloride KCl Blue vitriol Copper sulphate CuSO 4 . 5 H 2 O Fungicide Baking soda Sodium bicarbonate NaHCO 3 Washing soda Sodium carbonate Na 2 CO 3 . 10 H 2 O Manufacture of glass Gypsum Calcium sulphate CaSO 4 . 2 H 2 O Find the names of more salts and their uses and add them to this list.

Salts are generally ionic compounds. They are usually neutral in nature and has got so many uses in different fields such as fertilisers, glass, and so many other industries. Therefore, the uses of different salts can be given as, Name of the salt Chemical name Chemical formula Use Table salt Sodium chloride NaCl Making of freezing mixture Used for food flavouring. Sylvine/ Muriate of potash Potassium chloride KCl Used for making the fertilisers containing potassium. It is used as an alternative for table salt for the patients suffering from BP. Blue vitriol Copper sulphate CuSO 4 . 5 H 2 O Fungicide It is used as an electrolyte in some electrolysis. Baking soda Sodium bicarbonate NaHCO 3 Used as baking powder. Used in fire extinguishers. Washing soda Sodium carbonate Na 2 CO 3 . 10 H 2 O Manufacture of glass It is used in the manufacture of soaps. Gypsum Calcium sulphate CaSO 4 . 2 H 2 O It is used for making Plaster of Paris. It is used for making cements. Bleaching powder Calcium oxychloride CaOCl 2 It is used for bleaching cotton, linen, etc. It is used for making unshrinkable wool. Plaster of Paris Calcium sulphate hemihydrate CaSO 2 . 1 2 H 2 O It is used in making fire-proof materials. It is used for making casts for statues, jewellery, etc.

Exercise

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Questions from Exercise with Hints & Solutions

EASY

10th Gujarat Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 2 - Acids, Bases and Salts>Exercise>Q 11

Which one is the $pH$ of acidic solution?

HARD

10th Gujarat Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 2 - Acids, Bases and Salts>Exercise>Q 13

Read the information given and answer the questions.
The pH scale shows us how acidic or basic a substance is.

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As you can see from the pH scale given above, $7$ corresponds to neutral (that is, substances that are neither acidic or basic). The pH values of some common substances are given below. Draw a table with pH values as column headings. Write the name of each substance in the proper columns in the pH scale.

Stomach acid - 1

Pure water - 7

Sodium hydroxide - 14

Milk of Magnesia - 10

Milk - 6

Ammonia - 12

vinegar - 5

orange juice - 3

toothpaste - 9

Find out the pH of bleaching powder and tomato juice, and enter them to the pH scale!

Which is the most acidic substance in the list?

HARD

10th Gujarat Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 2 - Acids, Bases and Salts>Exercise>Q 22

We use various salts in our daily life. A list of some of these salts and their chemical formulae are given in the table. Analyse the table and complete.

Name of the salt	Chemical name	Chemical formula	Use
Table salt	Sodium chloride	$NaCl$	Making of freezing mixture
Sylvine/ Muriate of potash	Potassium chloride	$KCl$
Blue vitriol	Copper sulphate	${CuSO}_{4} . 5 H_{2} O$	Fungicide
Baking soda	Sodium bicarbonate	${NaHCO}_{3}$
Washing soda	Sodium carbonate	${Na}_{2} {CO}_{3} . 10 H_{2} O$	Manufacture of glass
Gypsum	Calcium sulphate	${CaSO}_{4} . 2 H_{2} O$

Find the names of more salts and their uses and add them to this list.

MEDIUM

10th Gujarat Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 2 - Acids, Bases and Salts>Exercise>Q 26

The chemical name of caustic soda is

HARD

10th Gujarat Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 2 - Acids, Bases and Salts>Exercise>Q 34

Four set-ups as given here were arranged to identify the gas evolved when dilute sulphuric acid was added to zinc granules. The most appropriate set up is

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