Start learning →

NDA Chemistry — practice by topic

Browse 45 questions across 10 Chemistry topics. Choose what you want to revise, then open a question to check its answer and worked solution.

Start learning NDA with Quill →

Chemistry topics

Carbon and its Compounds (15)Chemical Reactions and Equations (10)Unit 6A1: Heat Transfer and Calorimetry (10)Elements, Compounds and Mixtures (3)Unit 8A: Acid-Base Properties & Equilibria (2)Metallurgy (1)Unit 1B1: Atomic Structure & Quantum Mechanics (1)Unit 1C1: Periodic Trends in Atomic Properties (1)Unit 4B1: Properties of Metals and Non-Metals (1)Unit 6B: Chemical Thermodynamics & Hess's Law (1)

Try a Chemistry question

All acids in aqueous solution release:Read the answer and worked solution →An indicator that turns RED in acidic solution and BLUE in basic solution is:Read the answer and worked solution →Acid + Base → Salt + Water is called:Read the answer and worked solution →The chemical name of common salt (used in cooking) is:Read the answer and worked solution →

Worked practice questions

All acids in aqueous solution release:

  1. Hydroxide ions (OH⁻)
  2. Hydronium ions (H₃O⁺)
  3. Sodium ions (Na⁺)
  4. Chloride ions (Cl⁻)
Show answer and solution

Correct answer: B. Hydronium ions (H₃O⁺)

1. Acid in water: HA + H₂O → A⁻ + H₃O⁺. 2. The hydronium ion H₃O⁺ is responsible for the sour taste and characteristic acid behaviour. 3. Bases release OH⁻ instead. _Source: syllabus Science Ch 2 §2.1 Acids and Bases in Water_

Open this question →

An indicator that turns RED in acidic solution and BLUE in basic solution is:

  1. Methyl orange
  2. Phenolphthalein
  3. Litmus
  4. Universal indicator
Show answer and solution

Correct answer: C. Litmus

1. Litmus is the classic red↔blue indicator. 2. Red litmus turns blue in BASE; blue litmus turns red in ACID. 3. Phenolphthalein is colourless in acid, PINK in base. 4. Methyl orange is red in acid and yellow in base. _Source: syllabus Science Ch 2 §2.1.1 Indicators_

Open this question →

Acid + Base → Salt + Water is called:

  1. Combustion
  2. Neutralisation
  3. Decomposition
  4. Precipitation
Show answer and solution

Correct answer: B. Neutralisation

1. HCl + NaOH → NaCl + H₂O. 2. H⁺ + OH⁻ → H₂O is the net ionic equation. 3. Always exothermic; used in antacid tablets, soil correction. _Source: syllabus Science Ch 2 §2.1.3 Neutralisation Reaction_

Open this question →

How to practise

  1. Choose a Chemistry question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.