🧪 Acid and Bases Practice Quiz

Are you looking to sharpen your chemistry knowledge with an acid and bases practice quiz? Whether you’re a high school student, competitive exam aspirant, or just a science enthusiast, this quiz is a great way to test your understanding of the fundamentals of acids and bases.

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Chemistry Practice Questions

🧪 Acid and Bases Practice Quiz

1 / 25

Which ion is responsible for the acidic nature of a solution?

a) OH-

b) H+

c) Na+

d) Cl-

2 / 25

What is the pH range of acidic solutions?

a) 0-7

b) 7-14

c) 0-14

d) 7

3 / 25

What is the pH of a neutral solution at 25°C?

a) 0

b) 7

c) 14

d) 5

4 / 25

Which acid is commonly known as vinegar?

a) HCl

b) H2SO4

c) CH3COOH

d) HF

5 / 25

Which of the following is a weak base?

a) NaOH

b) KOH

c) NH3

d) Ca(OH)2

6 / 25

Which gas is produced when an acid reacts with a metal?

a) Oxygen

b) Hydrogen

c) Nitrogen

d) Carbon Dioxide

7 / 25

What color does litmus paper turn in a basic solution?

a) Red

b) Blue

c) Green

d) Yellow

8 / 25

Which of the following is a common indicator of pH?

a) Phenolphthalein

b) Bromine

c) Chlorine

d) Iodine

9 / 25

What is the chemical formula of sulfuric acid?

a) HCl

b) H2SO4

c) HNO3

d) H2CO3

10 / 25

What is the primary component of gastric acid?

a) HCl

b) H2SO4

c) CH3COOH

d) HNO3

11 / 25

Which theory defines acids and bases in terms of hydrogen ions?

a) Bronsted-Lowry

b) Arrhenius

c) Lewis

d) Mendeleev

12 / 25

Which acid is used in car batteries?

a) Hydrochloric acid

b) Nitric acid

c) Sulfuric acid

d) Acetic acid

13 / 25

Which element is present in all acids?

a) Oxygen

b) Nitrogen

c) Hydrogen

d) Carbon

14 / 25

What is the process of a base neutralizing an acid called?

a) Oxidation

b) Reduction

c) Neutralization

d) Sublimation

15 / 25

What is the main property of a strong base?

a) Completely ionizes in water

b) Partially ionizes in water

c) Does not ionize in water

d) Neutralizes weak acids

16 / 25

Which of the following is the strongest acid?

a) Hydrochloric acid

b) Acetic acid

c) Formic acid

d) Sulfuric acid

17 / 25

Which substance can act as both an acid and a base?

a) HCl

b) NaOH

c) NH3

d) H2O

18 / 25

What is the conjugate base of H2O?

a) OH-

b) H3O+

c) H2O

d) O2-

19 / 25

Which acid is found in citrus fruits?

a) Malic acid

b) Citric acid

c) Lactic acid

d) Acetic acid

20 / 25

Which of the following is the most acidic?

a) HCl

b) H2O

c) NH3

d) NaOH

21 / 25

Which of the following is not a property of acids?

a) Sour taste

b) Turns blue litmus red

c) Feels slippery

d) Reacts with metals

22 / 25

What is the product of the reaction between an acid and a base?

a) Salt and water

b) Carbon dioxide and water

c) Hydrogen gas

d) Oxygen gas

23 / 25

What is the term for a substance that donates protons?

a) Base

b) Acid

c) Catalyst

d) Solvent

24 / 25

Which of the following is a strong acid?

a) HCl

b) CH3COOH

c) NH3

d) H2O

25 / 25

What is the pH of a 0.01 M solution of HCl?

a) 2

b) 4

c) 6

d) 8

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📚 What Are Acids and Bases?

Acids and bases are two of the most important chemical substances in the study of chemistry. They play a vital role in various chemical reactions, biological systems, and industrial processes.

Acids are substances that release hydrogen ions (H⁺) in solution. They taste sour and turn blue litmus paper red.
Bases are substances that release hydroxide ions (OH⁻) in solution. They taste bitter and turn red litmus paper blue.

Understanding these basic concepts is essential for success in chemistry exams, including O-levels, A-levels, MDCAT, MCAT, NEET, CSS, SAT, and other science-based tests.

📝 Take the Acids and Bases Practice Quiz

This acids and bases quiz contains multiple-choice questions (MCQs) that cover:

Properties of acids and bases
pH scale and indicators
Neutralization reactions
Common examples of acids and bases
Arrhenius and Bronsted-Lowry theories

✅ Designed to help you revise and practice key concepts before your chemistry test.

🎯 Why Take This Quiz?

📖 Exam Preparation – Ideal for GCSE, MDCAT, SAT Subject Tests, and CSS science sections.
🧠 Concept Clarity – Reinforces your understanding of basic chemistry.
⏱️ Timed Practice – Simulates real exam conditions to improve speed and accuracy.
📊 Self-Assessment – Get instant feedback and identify weak areas.

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