Are MCQs included in Chapter 2 important questions?

Yes, conceptual and reaction-based MCQs are included for exam-oriented preparation.

Are these questions based on SEBA syllabus?

Yes, all questions follow the latest SEBA (ASSEB) syllabus for 2026–27.

Do these include previous year questions?

Yes, previous year questions are included to match HSLC exam trends.

Can practising these improve exam performance?

Yes, regular practice improves conceptual clarity and MCQ accuracy.

SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions | Assam Eduverse

Q: Why is Chapter 2 Acids, Bases and Salts important?

This chapter explains pH scale, properties of acids and bases, and salt formation frequently asked in HSLC exams.

Q: How many MCQs are asked in HSLC Science exam?

Students must answer 45 MCQs as per the latest HSLC exam pattern.

Q: Which topics are covered?

Topics include pH scale, strength of acids and bases, salts, washing soda, baking soda, and neutralisation.

SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions are prepared to strengthen conceptual understanding of acids, bases, and salts for the HSLC examination. These SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions include theory, reasoning, previous year questions (PYQs), and important MCQs.

The SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions strictly follow the latest SEBA (ASSEB) syllabus for 2026–27. Since the HSLC exam pattern includes 45 MCQs, practising MCQs from SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions is essential.

Topics covered in SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions include properties of acids and bases, chemical properties, pH scale, salts, common salt, washing soda, baking soda, and important reactions. Students searching for HSLC Science Chapter 2 Acids, Bases and Salts Important Questions or SEBA Class 10 Science Chapter 2 PYQs will find this resource highly useful.

SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Questions with PYQs and MCQs

A. Previous Year Questions with Answers

Q1. A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains— [HSLC ’15, ’19]
(i) NaCl
(ii) HCl
(iii) LiCl
(iv) KCl
Answer: (ii) HCl

Q2. A solution turns red litmus blue, its pH is likely to be— [HSLC ’16, ’18, ’22]
(i) 1
(ii) 4
(iii) 5
(iv) 10
Answer: (iv) 10

Q3. Which one of the following types of medicines is used for treating indigestion? [HSLC ’17]
(i) Antibiotic
(ii) Analgesic
(iii) Antacid
(iv) Antiseptic
Answer: (iii) Antacid

Q4. 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount HCl solution (the same solution as before) required to neutralise it will be— [HSLC ’20]
(i) 4 mL
(ii) 8 mL
(iii) 12 mL
(iv) 16 mL
Answer: (iv) 16 mL

Q5. Which of the following compound is used in soda-acid fire extinguisher? [HSLC ’23]
(i) NaCl
(ii) Na₂CO₃
(iii) NaHCO₃
(iv) Na₄Cl
Answer: (iii) NaHCO₃

Q6. Which one of the following is olfactory indicator? [HSLC 2024]
(A) Litmus
(B) Turmeric
(C) Vanilla
(D) Phenolphthalein
Answer: (C) Vanilla

Q7. Metal oxides are [HSLC 2024]
(A) acidic
(B) basic
(C) neutral
(D) None of the above
Answer: (B) basic

Q8. NaHCO₃ and Na₂CO₃·10H₂O are respectively commonly known as _____ and _____ [HSLC 2024]
(A) washing soda, baking soda
(B) baking soda, washing soda
(C) caustic soda, baking soda
(D) baking soda, caustic soda
Answer: (B) baking soda, washing soda

Q9. Consider the following statements regarding tooth decay: [HSLC 2024]
(i) Tooth decay starts at a pH lower than 5.5.
(ii) Tooth decay is caused by phosphoric acid which lowers pH.
Which among the following options is correct?
(A) (i) is true and (ii) is false
(B) (i) is false and (ii) is true
(C) Both (i) and (ii) are true
(D) Both (i) and (ii) are false
Answer: (C) Both (i) and (ii) are true

Q10. Which of the following compounds is used in soda-acid fire extinguisher? [2025]
(a) NH₄Cl
(b) Na₂CO₃
(c) NaCl
(d) NaHCO₃
Answer: (d) NaHCO₃

Q11. The pH of a neutral solution is [2025]
(a) 5
(b) 6
(c) 7
(d) 8
Answer: (c) 7

Q12. When dilute sulphuric acid is added to a solid X, a gas Y is formed along with the formation of salt of the solid. What could be X and Y? [2025]
(a) X : hydrochloric acid; Y : hydrogen
(b) X : sodium hydroxide; Y : hydrogen
(c) X : hydrochloric acid; Y : carbon dioxide
(d) X : sodium hydroxide; Y : carbon dioxide
Answer: (d) X : sodium hydroxide; Y : carbon dioxide

Q13. How is sodium carbonate obtained from baking soda? [2025]
(a) By heating baking soda
(b) By adding water to baking soda
(c) By reacting baking soda with acid
(d) By reacting baking soda with base
Answer: (a) By heating baking soda

Q.14 Nettle is a herbaceous plant that grows in the wild. Its leaves have stinging hairs which cause painful stings when touched accidentally. This is due to the secretion of [2025]
(a) hydrochloric acid
(b) methanoic acid
(c) lactic acid
(d) citric acid
Answer: (b) methanoic acid

B. Extra Questions with Answers

Q.1 Which of the following substances can be used as an olfactory indicator?
(i) Phenolphthalein
(ii) Methyl orange
(iii) Onion
(iv) Blue litmus
Answer: (iii) Onion

Q.2 When zinc granules react with dilute sulphuric acid, the gas evolved is—
(i) Oxygen
(ii) Hydrogen
(iii) Carbon dioxide
(iv) Chlorine
Answer: (ii) Hydrogen

Q.3 The reaction between an acid and a metal carbonate produces—
(i) Salt and water
(ii) Salt and hydrogen
(iii) Salt, carbon dioxide and water
(iv) Salt and oxygen
Answer: (iii) Salt, carbon dioxide and water

Q.4 Which of the following solutions will turn phenolphthalein pink?
(i) Dilute HCl
(ii) Distilled water
(iii) Sodium hydroxide solution
(iv) Carbon dioxide solution
Answer: (iii) Sodium hydroxide solution

Q.5 Assertion (A): Dry HCl gas does not change the colour of dry blue litmus paper.
Reason (R): HCl produces hydrogen ions only in the presence of water.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.6 Which of the following bases are called alkalis?
(i) Bases that are insoluble in water
(ii) Bases that dissolve in water
(iii) Bases that react with metals
(iv) Bases that are weak
Answer: (ii) Bases that dissolve in water

Q.7 Match the following:

Column I
(a) Gypsum
(b) Plaster of Paris
(c) Washing soda
(d) Baking soda

Column II
(i) CaSO₄·2H₂O
(ii) CaSO₄·½H₂O
(iii) Na₂CO₃·10H₂O
(iv) NaHCO₃

(i) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(ii) (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
(iii) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(iv) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Answer: (i) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

Q.8 When carbon dioxide gas is passed through lime water for a short time, the solution turns milky due to formation of—
(i) Calcium oxide
(ii) Calcium carbonate
(iii) Calcium hydroxide
(iv) Calcium chloride
Answer: (ii) Calcium carbonate

Q.9 Assertion (A): Acids and bases conduct electricity in aqueous solution.
Reason (R): They produce ions in water.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.10 Which of the following has a pH value greater than 7?
(i) Lemon juice
(ii) Dilute hydrochloric acid
(iii) Sodium hydroxide solution
(iv) Vinegar
Answer: (iii) Sodium hydroxide solution

Q.11 Which gas is evolved when sodium hydrogencarbonate reacts with dilute hydrochloric acid?
(i) Hydrogen
(ii) Oxygen
(iii) Carbon dioxide
(iv) Nitrogen
Answer: (iii) Carbon dioxide

Q.12 In the chlor-alkali process, the products formed are—
(i) Sodium chloride, hydrogen and oxygen
(ii) Sodium hydroxide, chlorine and hydrogen
(iii) Sodium carbonate, chlorine and oxygen
(iv) Sodium hydroxide and oxygen only
Answer: (ii) Sodium hydroxide, chlorine and hydrogen

Q.13 Assertion (A): Metallic oxides are basic in nature.
Reason (R): Metallic oxides react with acids to form salt and water.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.14 Which of the following salts is basic in nature?
(i) Sodium chloride
(ii) Ammonium chloride
(iii) Sodium carbonate
(iv) Copper sulphate
Answer: (iii) Sodium carbonate

Q.15 The pH of a neutral solution at 25°C is—
(i) 0
(ii) 7
(iii) 10
(iv) 14
Answer: (ii) 7

Q.16 When copper sulphate crystals are heated, they turn—
(i) Blue
(ii) Green
(iii) White
(iv) Brown
Answer: (iii) White

Q.17 Match the following:

Column I
(a) Strong acid
(b) Weak acid
(c) Strong base
(d) Weak base

Column II
(i) Produces large amount of H⁺ ions
(ii) Produces small amount of H⁺ ions
(iii) Produces large amount of OH⁻ ions
(iv) Produces small amount of OH⁻ ions

Q.18 Assertion (A): Plaster of Paris should be stored in a moisture-proof container.
Reason (R): Plaster of Paris reacts with moisture to form gypsum.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.19 Which of the following acids is present in vinegar?
(i) Citric acid
(ii) Acetic acid
(iii) Tartaric acid
(iv) Oxalic acid
Answer: (ii) Acetic acid

Q.20 The reaction between sodium hydroxide and hydrochloric acid is called—
(i) Oxidation
(ii) Reduction
(iii) Neutralisation
(iv) Decomposition
Answer: (iii) Neutralisation

Q.21 Which of the following turns lime water milky?
(i) Hydrogen gas
(ii) Oxygen gas
(iii) Carbon dioxide gas
(iv) Nitrogen gas
Answer: (iii) Carbon dioxide gas

Q.22 When excess carbon dioxide is passed through lime water, the milkiness disappears due to formation of—
(i) CaCO₃
(ii) CaO
(iii) Ca(HCO₃)₂
(iv) CaCl₂
Answer: (iii) Ca(HCO₃)₂

Q.23 Assertion (A): All acids contain hydrogen.
Reason (R): All compounds containing hydrogen are acids.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (iii) A is true but R is false.

Q.24 Which of the following will not conduct electricity in aqueous solution?
(i) Dilute HCl
(ii) Dilute H₂SO₄
(iii) Glucose solution
(iv) Sodium hydroxide solution
Answer: (iii) Glucose solution

Q.25 The ion responsible for the acidic nature of a solution is—
(i) OH⁻
(ii) H⁺ (or H₃O⁺)
(iii) Na⁺
(iv) Cl⁻
Answer: (ii) H⁺ (or H₃O⁺)

Q.26 Match the following:

Column I
(a) Antacid
(b) Acid rain
(c) Tooth decay
(d) Bee sting

Column II
(i) pH less than 5.6
(ii) Caused when pH of mouth is below 5.5
(iii) Contains methanoic acid
(iv) Used to neutralise excess stomach acid

(i) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
(ii) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(iii) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(iv) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
Answer: (i) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

Q.27 When an acid reacts with a metal, the products formed are—
(i) Salt and oxygen
(ii) Salt and hydrogen gas
(iii) Salt and carbon dioxide
(iv) Salt and water
Answer: (ii) Salt and hydrogen gas

Q.28 Assertion (A): Sodium hydrogencarbonate is used in baking powder.
Reason (R): On heating, it produces carbon dioxide gas.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.29 Which of the following salts is formed by the reaction of a strong acid and a weak base?
(i) Sodium chloride
(ii) Ammonium chloride
(iii) Sodium carbonate
(iv) Potassium nitrate
Answer: (ii) Ammonium chloride

Q.30 The process of dissolving an acid or base in water is generally—
(i) Endothermic
(ii) Exothermic
(iii) Neutral
(iv) Reversible only
Answer: (ii) Exothermic

Q.31 Which of the following acids is present in lemon juice?
(i) Acetic acid
(ii) Citric acid
(iii) Tartaric acid
(iv) Methanoic acid
Answer: (ii) Citric acid

Q.32 Which of the following is the correct formula of washing soda?
(i) Na₂CO₃
(ii) NaHCO₃
(iii) Na₂CO₃·10H₂O
(iv) NaOH
Answer: (iii) Na₂CO₃·10H₂O

Q.33 Assertion (A): Sodium chloride solution is neutral.
Reason (R): It is formed from a strong acid and a strong base.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.34 Which of the following is the chemical name of baking soda?
(i) Sodium carbonate
(ii) Sodium chloride
(iii) Sodium hydrogencarbonate
(iv) Calcium carbonate
Answer: (iii) Sodium hydrogencarbonate

Q.35 Which of the following will produce hydrogen gas on reacting with dilute acid?
(i) Copper
(ii) Zinc
(iii) Silver
(iv) Gold
Answer: (ii) Zinc

Q.36 Match the following:

Column I
(a) Vinegar
(b) Curd
(c) Tamarind
(d) Tomato

Column II
(i) Oxalic acid
(ii) Acetic acid
(iii) Lactic acid
(iv) Tartaric acid

(i) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
(ii) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(iii) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
(iv) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
Answer: (i) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Q.37 The pH value less than 7 indicates that the solution is—
(i) Basic
(ii) Neutral
(iii) Acidic
(iv) Salty
Answer: (iii) Acidic

Q.38 Assertion (A): Distilled water does not conduct electricity.
Reason (R): It does not contain ions.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.39 The formula of Plaster of Paris is—
(i) CaSO₄·2H₂O
(ii) CaSO₄·½H₂O
(iii) CaCO₃
(iv) Ca(OH)₂
Answer: (ii) CaSO₄·½H₂O

Q.40 When gypsum is heated at 373 K, it forms—
(i) Washing soda
(ii) Baking soda
(iii) Plaster of Paris
(iv) Calcium oxide
Answer: (iii) Plaster of Paris

Q.41 Which of the following is used for disinfecting drinking water?
(i) Washing soda
(ii) Bleaching powder
(iii) Baking soda
(iv) Plaster of Paris
Answer: (ii) Bleaching powder

Q.42 Bleaching powder is prepared by the action of chlorine on—
(i) Dry slaked lime
(ii) Quick lime
(iii) Washing soda
(iv) Baking soda
Answer: (i) Dry slaked lime

Q.43 Assertion (A): Non-metallic oxides are acidic in nature.
Reason (R): They react with bases to form salt and water.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.44 Which of the following is responsible for the strength of an acid?
(i) Number of OH⁻ ions produced
(ii) Number of H⁺ ions produced
(iii) Number of Na⁺ ions produced
(iv) Number of Cl⁻ ions produced
Answer: (ii) Number of H⁺ ions produced

Q.45 Which of the following salts contains water of crystallisation?
(i) Sodium chloride
(ii) Copper sulphate
(iii) Potassium nitrate
(iv) Ammonium chloride
Answer: (ii) Copper sulphate

Q.46 Match the following:

Column I
(a) Sodium hydroxide
(b) Chlorine
(c) Hydrogen
(d) Brine

Column II
(i) Gas liberated at cathode in chlor-alkali process
(ii) Aqueous solution of sodium chloride
(iii) Gas liberated at anode in chlor-alkali process
(iv) Alkali produced in chlor-alkali process

(i) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
(ii) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
(iii) (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
(iv) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
Answer: (i) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Q.47 The pH of acid rain is—
(i) Equal to 7
(ii) Greater than 7
(iii) Less than 5.6
(iv) Equal to 14
Answer: (iii) Less than 5.6

Q.48 Assertion (A): Tooth enamel gets corroded when the pH in the mouth falls below 5.5.
Reason (R): Tooth enamel is made up of calcium phosphate.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (ii) Both A and R are true but R is not the correct explanation of A.

Q.49 When sodium hydrogencarbonate is heated, the products formed are—
(i) Sodium chloride and water
(ii) Sodium carbonate, water and carbon dioxide
(iii) Sodium hydroxide and carbon dioxide
(iv) Sodium oxide and water
Answer: (ii) Sodium carbonate, water and carbon dioxide

Q.50 The reaction between hydrochloric acid and sodium hydroxide produces—
(i) Sodium chloride and hydrogen
(ii) Sodium chloride and water
(iii) Sodium hydroxide and hydrogen
(iv) Sodium chloride and carbon dioxide
Answer: (ii) Sodium chloride and water

Q.51 Which indicator is a synthetic indicator?
(i) Litmus
(ii) Turmeric
(iii) Phenolphthalein
(iv) Red cabbage extract
Answer: (iii) Phenolphthalein

Q.52 When a base reacts with a metal, the gas evolved is—
(i) Oxygen
(ii) Hydrogen
(iii) Carbon dioxide
(iv) Nitrogen
Answer: (ii) Hydrogen

Q.53 Which of the following is a strong acid?
(i) Acetic acid
(ii) Citric acid
(iii) Hydrochloric acid
(iv) Carbonic acid
Answer: (iii) Hydrochloric acid

Q.54 Assertion (A): Higher the hydronium ion concentration, lower is the pH value.
Reason (R): pH is a measure of hydrogen ion concentration.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.55 Which of the following salts belongs to the family of chloride salts?
(i) Na₂SO₄
(ii) KCl
(iii) Na₂CO₃
(iv) CuSO₄
Answer: (ii) KCl

Q.56 The colour of methyl orange in acidic medium is—
(i) Yellow
(ii) Pink
(iii) Red
(iv) Blue
Answer: (iii) Red

Q.57 Match the following:

Column I
(a) Metal + Acid
(b) Acid + Metal carbonate
(c) Base + Acid
(d) Metal oxide + Acid

Column II
(i) Salt + Water
(ii) Salt + Hydrogen
(iii) Salt + Carbon dioxide + Water
(iv) Salt + Water

(i) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
(ii) (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
(iii) (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
(iv) (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
Answer: (i) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)

Q.58 Which of the following has the highest hydrogen ion concentration?
(i) pH = 9
(ii) pH = 7
(iii) pH = 4
(iv) pH = 1
Answer: (iv) pH = 1

Q.59 Assertion (A): Baking soda is a mild non-corrosive base.
Reason (R): It can neutralise excess acid in the stomach.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Answer: (i) Both A and R are true and R is the correct explanation of A.

Q.60 Water of crystallisation is—
(i) Water absorbed on the surface of crystals
(ii) Fixed number of water molecules chemically attached to a salt
(iii) Moisture present in air
(iv) Water used in preparing solution
Answer: (ii) Fixed number of water molecules chemically attached to a salt

SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions for HSLC Exam 2026–27

The SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions provided here are designed as per the latest SEBA (ASSEB) syllabus 2026–27. These SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions include conceptual MCQs, short answers, and long answer questions aligned with the HSLC pattern.

As per the updated structure, students must attempt 45 MCQs. Therefore, practising SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions ensures better preparation for MCQ-based and reasoning-type questions.

The SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions cover pH scale calculations, strength of acids and bases, neutralisation reactions, and properties of salts. Regular practice of SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions improves conceptual clarity and scoring accuracy.

These Class 10 Acids, Bases and Salts Important Questions with MCQs are ideal for final revision. Continuous revision using SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions builds confidence and strengthens exam performance.

Frequently Asked Questions (FAQ)

1. Why is Chapter 2 Acids, Bases and Salts important for HSLC exam?

Chapter 2 Acids, Bases and Salts is important because it covers pH scale, properties of acids and bases, salts, washing soda, baking soda, and neutralisation reactions frequently asked in HSLC exams.

2. How many MCQs are asked in HSLC Science examination?

As per the latest HSLC exam pattern, students are required to answer 45 MCQs in the Science examination.

3. Are MCQs included in SEBA Class 10 Science Chapter 2 Important Extra Questions?

Yes, important conceptual and reaction-based MCQs are included in SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions as per the latest exam structure.

4. Are these important extra questions based on the latest SEBA syllabus?

Yes, all SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions are prepared strictly according to the latest SEBA (ASSEB) syllabus for 2026–27.

5. Do these questions include previous year questions (PYQs)?

Yes, chapter-wise previous year questions are included to help students understand exam trends and scoring patterns.

6. Which topics are covered in Chapter 2 Important Extra Questions?

Topics include chemical properties of acids and bases, pH scale, strength of acids and bases, salts, common salt, washing soda, baking soda, and neutralisation reactions.

7. Can practising these important extra questions improve HSLC performance?

Yes, regular practice of SEBA Class 10 Science Chapter 2 Acids, Bases and Salts Important Extra Questions improves conceptual clarity, MCQ accuracy, and overall exam confidence.

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Class 10 Chapter 2 Acids, Bases and Salts PYQs