CBSE Worksheet for chapter-2 Acid Bases And Salts class 10

CBSE Worksheet for chapter-2 Acid Bases And Salts class 10

Worksheet For class 10

This page is prepared by the Academic team of Physics Wallah which consists of CBSE Board Worksheet for Class 10 Chemistry . Students of Class 10 Chemistry can get a free Worksheet for Class 10 Chemistry in PDF format prepared as per the newest syllabus and examination pattern in your schools.

Standard 10 students can practice questions and answers which are given here for Chemistry in Grade 10 that will help them to improve their knowledge of all important chapters and their topics. Students can also download free pdf of Class 10 Chemistry Notes prepared by teachers and solve important problems provided here with solutions on daily basis to get more scores in school exams and tests.

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Summary

• Introduction of acids and bases.
• Definition of acids and bases by-

1. Arrhenius
2. Bronsted and Lowry
3. Lewis

Classification of acids and bases on the basis of-

1. Source
2. Concentration
3. Strength
4. Molecular composition
5. Acidity / Basicity

• Chemical properties of acids and bases.
• ​ Indicators.
• ​ Neutralization and PH.
• ​ Definition, classification, preparation, properties of salts.
• ​ Preparation, properties and uses of –

1. Washing soda
2. Baking soda
3. Sodium chloride
4. Caustic soda
5. Bleaching powder
6. Plaster of Paris.

Section - 1

Q1. The gas released when an acid reacts with metal carbonate or bicarbonate is –

1. H₂
2. CO₂
3. O₂
4. None of these

Q2. The acid present in apples is –

1. Oxalic acid
2. Tartaric acid
3. Malic acid
4. Formic acid

Q3. The gas produced when a base is heated with an ammonium salt is –

1. O₂
2. Ca(OH)₂
3. Al(OH)₃
4. None of these

Q4. Bases are –

1. Usually oxides of metals
2. Usually hydroxides of metals
3. Both (A) and (B)
4. Hydroxides and oxides of non-metals

Q5. The colour of litmus in neutral solution is –

1. Red
2. Purple
3. Blue
4. Pink

Q6. Vitamin C tablets –

1. Turns cabbage juice red
2. Turn turmeric juice deep brown
3. Both (A) and (B)
4. Nature cannot be tested

Q7. 'Liming of soil' is done by adding –

1. CaO
2. Ca(OH)₂
3. CaCO₃
4. All of these

Q8. Bleaching powder sterilizes drinking water by –

1. Oxidation
2. Reduction
3. Both
4. None of these

Q9. FeSO₄.7H₂O is-

1. Green vitriol
2. Oil of vitriol
3. Blue vitriol
4. White vitriol

Section - 2

Q10. Give the name and formulae of

1. Two strong bases
2. Two weak bases

Q11. Name a gas whose aqueous solution is basic.

Q12. What do you understand by organic acids. Give the name of two organic acids and their sources.

Q13. What will you observe when-

1. Red litmus paper is introduced into the solution of sodium sulphate ?
2. Methyl orange is added to dilute hydrochloric acid ?
3. A drop of phenolphthalein is added to solution of lime water ?
4. Blue litmus is introduced into a solution of ferric chloride ?

Q14. Name the products formed when sodium hydrogen carbonate is heated.

Write the chemical equation for the reaction involved in the above.

Q15. Explain why –

1. Common salt becomes sticky during the rainy season ?
2. Blue vitriol changes to white upon heating ?
3. Anhydrous calcium chloride is used in dessicators ?
4. If a bottle full of concentratedSulphuric acid is left openin the atmosphere by accident, the acid starts flowing out of the bottle on its own ?

Q16. Give the chemical names of the following compounds –

1. Washing soda
2. Baking soda
3. Bleaching powder

Q17. How will you prepare the following ? Give chemical reactions also.

1. Plaster of Paris from Gypsum
2. Bleaching powder from slaked lime
3. Baking soda from brine.