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Year 12 Exam  >  Year 12 Test  >  Chemistry  >  Test: Acid, Bases & Salts - Year 12 MCQ

Acid, Bases & Salts - Free MCQ Practice Test with solutions, Year 12 Chemistry


MCQ Practice Test & Solutions: Test: Acid, Bases & Salts (16 Questions)

You can prepare effectively for Year 12 Chemistry for Year 12 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Acid, Bases & Salts". These 16 questions have been designed by the experts with the latest curriculum of Year 12 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 40 minutes
  • - Number of Questions: 16

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Test: Acid, Bases & Salts - Question 1
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Which of the following substances is classified as a base?

Detailed Solution: Question 1

NaOH (Sodium hydroxide) is classified as a base because it dissociates in water to produce OH− ions. In contrast, HCl and H2SO4 are acids, while NH3 is a weak base that can accept protons in solution.

Test: Acid, Bases & Salts - Question 2
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What is the pH value of a strong acid solution, typically?

Detailed Solution: Question 2

The pH value of a strong acid solution usually falls between 1 and 3. This low pH indicates a high concentration of H+ ions, which characterizes strong acids.

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Test: Acid, Bases & Salts - Question 3
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Which of the following is a synthetic indicator?

Detailed Solution: Question 3

Phenolphthalein is a synthetic indicator used in titrations, whereas litmus, turmeric, and red cabbage are natural indicators that change color based on the acidity or basicity of a solution.

Test: Acid, Bases & Salts - Question 4
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What is the result of mixing hydrochloric acid (HCl) with sodium bicarbonate (NaHCO3)?

Detailed Solution: Question 4

Mixing hydrochloric acid with sodium bicarbonate produces sodium chloride, water, and carbon dioxide gas, demonstrating a typical acid-base reaction.
The balanced chemical equation is: HCl + NaHCO3 → NaCl + H2O + CO2.

Test: Acid, Bases & Salts - Question 5
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What compound is produced when sodium hydroxide reacts with hydrochloric acid?

Detailed Solution: Question 5

The reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) produces sodium chloride (NaCl) and water (H2O), following the neutralization reaction: NaOH + HCl → NaCl + H2O.

Test: Acid, Bases & Salts - Question 6
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When a piece of blue litmus paper is dipped in vinegar, what color change occurs?

Detailed Solution: Question 6

Vinegar, which contains acetic acid, will turn blue litmus paper red, indicating its acidic nature due to the presence of H+ ions.

Test: Acid, Bases & Salts - Question 7
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What happens in a neutralization reaction?

Detailed Solution: Question 7

A neutralization reaction occurs when an acid reacts with a base to produce a salt and water. The general equation is: Acid + Base → Salt + Water.

Test: Acid, Bases & Salts - Question 8
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Which of the following is a property of acids?

Detailed Solution: Question 8

Acids turn blue litmus paper red, indicating their acidic properties. They typically taste sour and release H+ ions in solution.

Test: Acid, Bases & Salts - Question 9
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What is the main component of an antacid?

Detailed Solution: Question 9

Magnesium hydroxide is a common active ingredient in many antacids, which help neutralize stomach acidity and provide relief from heartburn.

Test: Acid, Bases & Salts - Question 10
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What is the balanced equation for the reaction of baking soda when heated?

Detailed Solution: Question 10

The balanced equation for the thermal decomposition of baking soda (sodium bicarbonate) is: 2NaHCO3 → Na2CO3 + H2O + CO2. This reaction produces sodium carbonate, water, and carbon dioxide gas.

Test: Acid, Bases & Salts - Question 11
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What is a common effect of consuming too much acid?

Detailed Solution: Question 11

Consuming excessive amounts of acid can lead to acidosis, a condition where the body fluids contain too much acid, affecting bodily functions.

Test: Acid, Bases & Salts - Question 12
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How can you identify an acid using litmus paper?

Detailed Solution: Question 12

Acids turn blue litmus paper red, indicating their acidic nature due to the presence of H+ ions in the solution.

Test: Acid, Bases & Salts - Question 13
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What is the significance of a pH of 7 in a solution?

Detailed Solution: Question 13

A pH of 7 indicates that a solution is neutral, meaning it is neither acidic nor basic, which is the case for pure water at 25°C.

Test: Acid, Bases & Salts - Question 14
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Which reaction occurs when calcium carbonate reacts with hydrochloric acid?

Detailed Solution: Question 14

The reaction between calcium carbonate (CaCO3) and hydrochloric acid (HCl) produces calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2): CaCO3 + 2HCl → CaCl2 + H2O + CO2.

Test: Acid, Bases & Salts - Question 15
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What is the chemical formula for the salt formed in the reaction between sulfuric acid and sodium hydroxide?

Detailed Solution: Question 15

The salt formed from the reaction between sulfuric acid (H2SO4) and sodium hydroxide (NaOH) is sodium sulfate (Na2SO4), resulting from the neutralization reaction: H2SO4 + 2NaOH → Na2SO4 + 2H2O.

Test: Acid, Bases & Salts - Question 16
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What does the term 'alkaline' refer to in chemistry?

Detailed Solution: Question 16

'Alkaline' refers to substances that have a pH greater than 7, indicating their basic nature. These substances can produce OH− ions in solution.

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About this Year 12 Practice Test

This test contains 16 MCQs on Acid, Bases & Salts with detailed solutions for each question. It is part of the Chemistry for Year 12 course on EduRev, designed to align with the current Year 12 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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