Acids, Bases and Salts MCQs – NCERT Science Class X Ch.2 | Academia Aeternum
NCERT  ·  Science  ·  Class X  ·  Ch.2

Acids, Bases and Salts
MCQ Master Series

pH · Indicators · Neutralisation · Salts · Buffer

🎯 50 Questions
⏱ 30 min Suggested
📊 3 Tiers
🗂 6 Topics
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Question Intelligence

Quiz Analytics

A data-driven breakdown of all 50 questions by difficulty, exam origin and topic distribution.

📈 Distribution Overview

50
Total Questions
CBSE Board
26
State Board
15
Olympiad Level
9

🗂 Topic Coverage

Properties of Acids & Bases
22%
pH Scale & Indicators
20%
Neutralisation Reactions
18%
Important Salts
16%
Preparation of Salts
14%
pH in Daily Life
10%
26
CBSE Board
15
State Board
9
Olympiad Level
Conceptual Framework

Key Concept Highlights

6 foundational pillars that power every question in this quiz. Understand these, and the answers follow naturally.

🍋
Acids
Produce H⁺ ions in solution. Sour taste, turn blue litmus red, react with metals to produce H₂. pH < 7.
🧼
Bases & Alkalis
Produce OH⁻ ions. Bitter taste, soapy touch, turn red litmus blue. Alkalis are water-soluble bases. pH > 7.
🌈
pH & Indicators
pH = −log[H⁺]. Litmus, phenolphthalein, methyl orange — each has a distinct colour-change range.
⚗️
Neutralisation
Acid + Base → Salt + Water. The reaction releases heat (exothermic). Used in antacids and soil treatment.
🧂
Important Salts
Common salt (NaCl), washing soda (Na₂CO₃·10H₂O), baking soda (NaHCO₃), bleaching powder (CaOCl₂), plaster of Paris.
🌱
pH in Daily Life
Human blood pH ≈ 7.35–7.45. Acid rain pH < 5.6. Soil pH affects crop growth. Tooth decay below pH 5.5.
Pedagogical Value

Why MCQs Matter

Multiple-choice questions are not mere guessing games — they are the sharpest diagnostic tool available to a competitive exam aspirant.

~10%

of CBSE Science board — consistently high-yield chapter

Quick Reference

Important Formula Capsules

6 must-memorise equations that surface repeatedly across CBSE and JEE papers.

Neutralisation
\[ \text{Acid} + \text{Base} \rightarrow \text{Salt} + H_2O \]
pH Definition
\[ \text{pH} = -\log_{10}[H^+] \]
Baking Soda + HCl
\[ NaHCO_3 + HCl \rightarrow NaCl + H_2O + CO_2 \]
Washing Soda
\[ Na_2CO_3 \cdot 10H_2O \xrightarrow{\Delta} Na_2CO_3 + 10H_2O \]
POP → Gypsum
\[ CaSO_4 \cdot \tfrac{1}{2}H_2O + \tfrac{3}{2}H_2O \rightarrow CaSO_4 \cdot 2H_2O \]
Chlor-alkali
\[ 2NaCl(aq) + 2H_2O \xrightarrow{\text{electrolysis}} 2NaOH + Cl_2 + H_2 \]
Learning Outcomes

What You Will Learn

By completing this quiz set you will have exercised all the following competencies.

01 Distinguish acids from bases using physical properties and indicators
02 Interpret the pH scale and predict the nature of a solution from its pH value
03 Write balanced equations for neutralisation reactions
04 Explain the preparation and uses of sodium hydroxide, baking soda, and washing soda
05 Describe the significance of pH in digestion, tooth decay, and agriculture
06 Explain the chlor-alkali process and name its three products
Exam Preparation

Strategy & Preparation Tips

4 evidence-based strategies to maximise your score in CBSE Boards and JEE.

Step 01
pH Chart from Memory
Draw a 0–14 pH scale and label: strong acid (0–3), weak acid (4–6), neutral (7), weak base (8–10), strong base (11–14).
Step 02
Salts & Their Uses
CBSE regularly asks uses of NaHCO₃, Na₂CO₃, CaOCl₂, and POP. Learn one use per salt — do not confuse baking soda with washing soda.
Step 03
Indicators Colour Table
Litmus (red→acid, blue→base), phenolphthalein (colourless→acid, pink→base), methyl orange (red→acid, yellow→base).
Step 04
Equation-Based MCQs
For each salt reaction MCQ, write the full balanced equation mentally before checking options — it is faster than elimination.

Ready to Test Your Mastery?

50 questions  ·  Elapsed timer  ·  Instant scored results

⚡ Begin Acids, Bases and Salts Quiz
🎯 Knowledge Check

Chemistry — Acids, Bases And Salts

50 Questions Class 10 MCQs
1
Which of the following has a sour taste?
2
Which of the following substances turns blue litmus red?
3
The chemical formula of hydrochloric acid is:
4
Which of the following will turn red litmus blue?
5
Which gas is released when acid reacts with metal?
6
What happens when an acid reacts with a base?
7
The pH of pure water is:
8
Which of these is a weak acid?
9
The chemical name of baking soda is:
10
Which one of the following is used in antacid tablets?
11
Which of the following statements is true?
12
Which acid is present in curd?
13
Which of the following is not a mineral acid?
14
What is the nature of distilled water?
15
Which of the following will have the highest pH value?
16
Which of these substances is used in the manufacture of washing soda?
17
The pH of an acidic solution is always:
18
Which acid is present in vinegar?
19
Which of the following is used to make bleaching powder?
20
Common salt is chemically known as:
21
Tooth decay starts when the pH of the mouth falls below:
22
Which of these is a basic oxide?
23
Which of the following salts gives a neutral solution in water?
24
Which one of these is used to neutralize acid spills?
25
Which ion is responsible for acidic nature?
26
Which base is soluble in water?
27
The process of forming salts is known as:
28
Which of these will react with acids to produce hydrogen gas?
29
Which of the following is a natural indicator?
30
Which acid is present in tamarind?
31
Which gas is released when metal carbonate reacts with acid?
32
Which of the following has basic nature?
33
Which acid is present in oranges?
34
Which of these can act as both acid and base?
35
Which of the following is not an alkali?
36
Acid rain contains mainly which acid?
37
The chemical name of washing soda is:
38
Which of these substances is used in fire extinguishers?
39
Which of the following acids is used in car batteries?
40
Which of these bases is used in soap making?
41
The process used to produce \(\mathrm{NaOH}\) is called:
42
Which of these can be used as a laboratory acid?
43
The salt obtained from strong acid and weak base is:
44
Which of these is an olfactory indicator?
45
What is the pH of human blood?
46
Which of these salts is used in making glass?
47
Turmeric changes from yellow to red in:
48
Plaster of Paris is chemically:
49
What is formed when carbon dioxide is passed through lime water?
50
Which of these salts is used in cold packs?
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ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
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50 MCQs on Acids, Bases and Salts | Class 10 NCERT Chapter 2
50 MCQs on Acids, Bases and Salts | Class 10 NCERT Chapter 2 — Complete Notes & Solutions · academia-aeternum.com
Welcome to our comprehensive collection of Class 10 Science Chapter 1 – Acids, Bases and Salts MCQs with answers and explanations. These multiple choice questions are carefully prepared from the latest NCERT Class 10 Science textbook to help students master the key concepts of acids, bases, and salts. Each question comes with detailed answers and reasoning to strengthen your understanding for school exams, CBSE board preparation, and competitive tests like NTSE or Olympiads. Practice these…
🎓 Class 10 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
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Frequently Asked Questions

Acids are substances that contain hydrogen and can donate hydrogen ions (H+) to other substances. They have a sour taste and turn blue litmus paper red.

Bases are bitter, slippery to touch, turn red litmus blue, and neutralize acids in chemical reactions.

Salts are ionic compounds formed when acids react with bases or metals, consisting of cations from the base and anions from the acid.

A neutralization reaction is when an acid reacts with a base to form a salt and water, cancelling out each other's properties.

pH < 7 means acidic, pH = 7 is neutral, and pH > 7 is basic.

Indicators are substances like litmus, phenolphthalein, and methyl orange that change color in acids and bases to identify their nature.

The formula is NaHCO3 and it is mainly used in baking and as an antacid.

Hydrochloric acid aids digestion in the stomach and maintains a low pH to help break down food.

Strong acids/bases completely ionize in water; weak acids/bases only partially ionize. Examples: HCl (strong acid), CH3COOH (weak acid).

Water of crystallization is the fixed number of water molecules chemically bonded with salts in their crystalline form.

Dilution involves adding water to an acid to lower its concentration, making it safer for use and handling.

Always add acid to water slowly with stirring to avoid splashes and excessive heat which can cause burns or break glass.

Ant stings inject formic acid causing pain; applying a base like baking soda neutralizes the acid and gives relief.

Bleaching powder (CaOCl2) is used for disinfecting water, bleaching laundry, and as an oxidising agent in chemical industries.

It is prepared by heating gypsum; used for making casts, sculptures, decorative designs, and filling wall cracks.

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    ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
    Sharing this chapter
    50 MCQs on Acids, Bases and Salts | Class 10 NCERT Chapter 2
    50 MCQs on Acids, Bases and Salts | Class 10 NCERT Chapter 2 — Complete Notes & Solutions · academia-aeternum.com
    Welcome to our comprehensive collection of Class 10 Science Chapter 1 – Acids, Bases and Salts MCQs with answers and explanations. These multiple choice questions are carefully prepared from the latest NCERT Class 10 Science textbook to help students master the key concepts of acids, bases, and salts. Each question comes with detailed answers and reasoning to strengthen your understanding for school exams, CBSE board preparation, and competitive tests like NTSE or Olympiads. Practice these…
    🎓 Class 10 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
    Share on
    WhatsApp
    Telegram
    X / Twitter
    Facebook
    Instagram
    Threads
    Pinterest
    LinkedIn
    Quora
    Discord
    Reddit
    Email
    academia-aeternum.com/class-10/science/acids-bases-and-salts/mcqs/ Copy link
    💡
    Exam tip: Sharing chapter notes with your study group creates a reinforcement loop. Teaching a concept is the fastest path to mastering it.

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