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Balbharati solutions for Maharashtra state board Class 9 Science and Technology chapter 5 - Acids, Bases and Salts [Latest edition]

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Maharashtra state board Class 9 Science and Technology - Shaalaa.com

Chapter 5: Acids, Bases and Salts

Exercise

Balbharati solutions for Maharashtra state board Class 9 Science and Technology Chapter 5 Acids, Bases and Salts Exercise [Pages 73 - 74]

Exercise | Q 1.1 | Page 73

Identify the odd one out and justify.

Chloride, nitrate, hydride, ammonium 

Exercise | Q 1.2 | Page 73

Identify the odd one out and justify.

Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia 

Exercise | Q 1.3 | Page 73

Identify the odd one out and justify.

Acetic acid, carbonic acid, hydrochloric acid, nitric acid 

Exercise | Q 1.4 | Page 73

Identify the odd one out and justify.

Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate 

Exercise | Q 1.5 | Page 73

Identify the odd one out and justify.

Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride 

Exercise | Q 1.6 | Page 73

Identify the odd one out and justify.

Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

Exercise | Q 1.7 | Page 73

Identify the odd one out and justify.

Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate. 

Exercise | Q 1.8 | Page 73

Identify the odd one out and justify.

Sodium chloride, potassium hydroxide, acetic acid, sodium acetate. 

Exercise | Q 2.1 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

50ml water is added to 50ml solution of copper sulphate. 

Exercise | Q 2.2 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

Two drops of the indicator phenlphthalein were added to 10ml solution of sodium hydroxide .

Exercise | Q 2.3 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

Two or three filings of copper were added to 10ml dilute nitric acid and stirred.

Exercise | Q 2.4 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

A litmus paper was dropped into 2ml dilute HCl. Then 2ml concentrated NaOH was added to it and stirred. 

Exercise | Q 2.5 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH. 

Exercise | Q 2.6 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

Zinc oxide was added to dilute HCl and zinc oxide was added to dilute NaOH. 

Exercise | Q 2.7 | Page 73

Write down the changes that will be seen in the instance and explain the reason behind it. 

Dilute HCl was added to limestone.

Exercise | Q 2.8 | Page 73

Write down the changes that will be seen in each instance and explain the reason behind it. 

Pieces of blue vitriol were heated in a test tube. On cooling, water was added to it.

Exercise | Q 2.9 | Page 73

Write down the changes that will be seen in each instance and explain the reason behind it. 

Dilute H2SO4 was taken in an electrolytic cell and electric current was passed through it. 

Exercise | Q 3 | Page 73

Classify the following oxides into three types and name the types.

CaO, MgO, CO2 , SO, Na2O, ZnO, Al2O3 , Fe2O3

Exercise | Q 4.1 | Page 73

Explain by drawing a figure of the electronic configuration. 

Formation of sodium chloride from sodium and chlorine. 

Exercise | Q 4.2 | Page 73

Explain by drawing a figure of the electronic configuration. 

Formation of a magnesium chloride from magnesium and chlorine. 

Exercise | Q 5.1 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Hydrochloric acid

Exercise | Q 5.2 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Sodium chloride

Exercise | Q 5.3 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Potassium hydroxide

Exercise | Q 5.4 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Ammonia

Exercise | Q 5.5 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Acetic acid

Exercise | Q 5.6 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Magnesium chloride

Exercise | Q 5.7 | Page 74

Show the dissociation of the following compound on dissolving in water, with the help of chemical equation and write whether the proportion of dissociation is small or large. 

Copper sulphate

Exercise | Q 6.1 | Page 74

Write down the concentration of the following solution in g/L and mol/L. 

7.3g HCl in 100ml solution 

Exercise | Q 6.2 | Page 74

Write down the concentration of the following solution in g/L and mol/L. 

 2g NaOH in 50ml solution 

Exercise | Q 6.3 | Page 74

Write down the concentration of the following solution in g/L and mol/L. 

3g CH3COOH in 100ml solution 

Exercise | Q 6.4 | Page 74

Write down the concentration of the following solution in g/L and mol/L. 

4.9 g H2SO4 in 200ml solution 

Exercise | Q 7 | Page 74

Obtain a sample of rainwater. Add to it a few drops of universal indicator. Meausre its pH. Describe the nature of the sample of rainwater and explain the effect if it has on the living world. 

Exercise | Q 8.1 | Page 74

Answer the following question. 

Classify the acids according to their basicity and give one example of each type.

Exercise | Q 8.2 | Page 74

Answer the following question.

What is meant by neutralization? Give two examples from everyday life of the neutralization reaction. 

Exercise | Q 8.3 | Page 74

Answer the following question.

Explain what is meant by electrolysis of water. Write the electrode reactions and explain them. 

Exercise | Q 9.1 | Page 74

Give reason for the following. 

Hydronium ions are always in the form H3O+ 

Exercise | Q 9.2 | Page 74

Give reason for the following.

Buttermilk spoils if kept in a copper or brass container.

Exercise | Q 10.1 | Page 74

Write the chemical equation for the following activitie. 

NaOH solution was added to HCl solution. 

Exercise | Q 10.2 | Page 74

Write the chemical equation for the following activitie.

Zinc dust was added to dilute H2SO4

Exercise | Q 10.3 | Page 74

Write the chemical equation for the following activitie.

 Dilute nitric acid was added to calcium oxide. 

Exercise | Q 10.4 | Page 74

Write the chemical equation for the following activitie.

Carbon dioxide gas was passed through KOH solution. 

Exercise | Q 10.5 | Page 74

Write the chemical equation for the following activitie.

Dilute HCl was poured on baking soda. 

Exercise | Q 11.1 | Page 74

State the difference.

Acids and bases 

Exercise | Q 11.2 | Page 74

State the difference.
Cation and anion 

Exercise | Q 11.3 | Page 74

State the difference.
Negative electrode and positive electrode.

Exercise | Q 12 | Page 74

Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7. 

Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide .

Chapter 5: Acids, Bases and Salts

Exercise
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Maharashtra state board Class 9 Science and Technology - Shaalaa.com

Balbharati solutions for Maharashtra state board Class 9 Science and Technology chapter 5 - Acids, Bases and Salts

Balbharati solutions for Maharashtra state board Class 9 Science and Technology chapter 5 (Acids, Bases and Salts) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Maharashtra state board Class 9 Science and Technology solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Maharashtra state board Class 9 Science and Technology chapter 5 Acids, Bases and Salts are Water of Crystallisaton, Ionic Compounds and Electrical Conductivity, Dissociation of Ions and Electrical Conductivity, Electrolysis, Electrolysis of Water, Ionic Compounds : Recapitulation, Dissociation of Ionic Compounds, Arrhenius Theory of Acids and Bases, Classification of Acids and Bases, Concentration of Acid and Base, The Ph of Solution, Universal Indicators, Reactivity of Acids and Bases, Concept of Salts.

Using Balbharati 9th solutions Acids, Bases and Salts exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 9th prefer Balbharati Textbook Solutions to score more in exam.

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