GCSE Level Chemistry Quiz on 'Chemical tests and identifying gases, ions and compounds' (re-edit)

Which of the following is a chemical test for the gas hydrogen? [id-01]
1. pops with lit splint
2. turns limewater cloudy
3. relights a glowing splint
4. bleaches damp litmus paper white
Which of the following is a chemical test for the gas carbon dioxide? [id-02]
1. pops with a lit splint
2. turns limewater cloudy/milky (white precipitate)
3. relights a glowing splint
4. bleaches damp litmus paper white
Which of the following is a chemical test for the gas oxygen? [id-03]
1. pops with a lit splint
2. turns limewater cloudy
3. relights a glowing splint
4. bleaches damp litmus paper white
Which of the following is a chemical test for the gas chlorine? [id-04]
1. pops with a lit splint
2. turns limewater cloudy
3. relights a glowing splint
4. bleaches damp litmus paper white
Which gas is formed when a metal reacts with an acid? [id-05]
1. hydrogen, H₂
2. carbon dioxide, CO₂
3. oxygen, O₂
4. chlorine, Cl₂
Which gas is formed when an acid reacts with a carbonate? [id-06]
1. hydrogen, H₂
2. carbon dioxide, CO₂
3. oxygen, O₂
4. chlorine, Cl₂
A gas turns damp red litmus paper blue. The gas is? [id-07]
1. carbon dioxide, CO₂
2. oxygen, O₂
3. ammonia, NH₃
4. sulfur dioxide, SO₂
A gas turns damp orange potassium dichromate(VI) paper green. The gas is? [id-08]
1. carbon dioxide, CO₂
2. oxygen, O₂
3. ammonia, NH₃
4. sulfur dioxide, SO₂
A brown solution of a substance turns dark blue when a drop of starch solution was added. The substance is most likely to be? [id-09]
1. iodine, I₂
2. chlorine, Cl₂
3. bromine, Br₂
4. sulphur dioxide, SO₂
Which of the following descriptions describes a simple chemical test for chloride ions in a solution? [id-10]
1. A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
2. A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
3. A few cm³ of dilute hydrochloric acid is added and any gas formed is tested with limewater.
4. A few cm³ of dilute sodium hydroxide is added and any gas formed is tested with red litmus.
A few cm³ of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a white precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The white precipitate dissolves in ammonia solution.) [id-11]
1. sulfate ion, SO₄^2-
2. chloride ion, Cl^-
3. bromide ion, Br^-
4. iodide ion, I^-
A few cm³ of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a cream precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The cream precipitate slightly dissolves in conc. ammonia solution.) [id-12]
1. sulfate ion, SO₄^2-
2. chloride ion, Cl^-
3. bromide ion, Br^-
4. iodide ion, I^-
A few cm³ of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a pale yellow precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The pale yellow precipitate is insoluble with conc. ammonia solution.) [id-13]
1. sulfate ion, SO₄^2-
2. chloride ion, Cl^-
3. bromide ion, Br^-
4. iodide ion, I^-
Which of the following descriptions describes a simple chemical test for sulphate ions in a solution? [id-14]
1. A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
2. A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
3. A few cm³ of dilute hydrochloric acid is added and any gas formed is tested with limewater.
4. A few cm³ of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
Which of the following descriptions describes a simple chemical test for carbonate ions in a solution? [id-15]
1. A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
2. A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
3. A few cm³ of dilute hydrochloric acid is added and any gas formed is tested with limewater.
4. A few cm³ of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
Which of the following descriptions describes a simple chemical test for ammonium ions in a solution? [id-16]
1. A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
2. A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
3. A few cm³ of dilute hydrochloric acid is added and any gas formed is tested with limewater.
4. A few cm³ of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
A few drops of sodium hydroxide solution was added to a metal salt solution. A dark green gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-17]
1. iron(II) ion, Fe²⁺
2. iron(III) ion, Fe³⁺
3. copper(II) ion, Cu²⁺
4. zinc ion, Zn²⁺
A few drops of sodium hydroxide solution was added to a metal salt solution. A brown gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-18]
1. iron(II) ion, Fe²⁺
2. iron(III) ion, Fe³⁺
3. copper(II) ion, Cu²⁺
4. zinc ion, Zn²⁺
A few drops of sodium hydroxide solution was added to a metal salt solution. A blue gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-19]
1. iron(II) ion, Fe²⁺
2. iron(III) ion, Fe³⁺
3. copper(II) ion, Cu²⁺
4. zinc ion, Zn²⁺
A few drops of sodium hydroxide solution was added to a metal salt solution. A white gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? (Advanced level note: The white precipitate dissolves in excess dil. sodium hydroxide to give a clear colourless solution) [id-20]
1. iron(II) ion, Fe²⁺
2. iron(III) ion, Fe³⁺
3. copper(II) ion, Cu²⁺
4. zinc ion, Zn²⁺
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A bright yellow flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-21]
1. sodium ion, Na⁺
2. copper(II) ion, Cu²⁺
3. potassium ion, K⁺
4. calcium ion, Ca²⁺
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A blue flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-22]
1. sodium ion, Na⁺
2. copper(II) ion, Cu²⁺
3. potassium ion, K⁺
4. calcium ion, Ca²⁺
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A lilac/violet flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-23]
1. sodium ion, Na⁺
2. copper(II) ion, Cu²⁺
3. potassium ion, K⁺
4. calcium ion, Ca²⁺
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A brick red flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-24]
1. sodium ion, Na⁺
2. copper(II) ion, Cu²⁺
3. potassium ion, K⁺
4. calcium ion, Ca²⁺
A white solid X dissolved in dilute hydrochloric. A colourless gas evolved which turned limewater milky. When a drop of the solution, on the end of a platinum wire, a bright yellow flame colour was observed when the platinum wire was placed in a roaring bunsen flame. From these observations deduce the identity of substance X. [id-25]
1. sodium carbonate, Na₂CO₃
2. potassium sulfite, K₂SO₃
3. calcium carbonate, CaCO₃
4. sodium sulfate, Na₂SO₄
A blue solid X was dissolved in water and the solution divided into two portions. When a few drops of sodium hydroxide was added to the 1st portion, a blue gelatinous precipitate formed. When a few drops of dilute nitric acid, followed by a few drops of barium nitrate solution was added to the 2nd portion, a white precipitate formed. From these observations deduce the identity of substance X. [id-26]
1. calcium sulphate, CaSO₄
2. copper(II) sulphate, CuSO₄
3. potassium chloride, KCl
4. copper(II) chloride, CuCl₂
Colourless crystals of substance X were dissolved in water and a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a white precipitate formed. A few crystals of X were mixed with a few drops of conc. hydrochloric acid. When a platinum wire was dipped in this mixture, and then placed in a roaring bunsen flame, a red flame colour was seen. From these observations deduce the identity of substance X. [id-27]
1. potassium sulphate, K₂SO₄
2. copper(II) chloride, CuCl₂
3. calcium chloride, CaCl₂
4. sodium sulfate, Na₂SO₄
Colourless crystals of substance X were dissolved in water and a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a yellow precipitate formed. A few crystals of X were mixed with a few drops of conc. hydrochloric acid. When a platinum wire was dipped in this mixture, and then placed in a roaring bunsen flame, a purple-lilac flame colour was seen. From these observations deduce the identity of substance X. [id-28]
1. lead(II) iodide, PbI₂
2. potassium sulphate, K₂SO₄
3. copper(II) chloride, CuCl₂
4. potassium iodide, KI
To a colourless solution X, a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a white precipitate formed. When a few drops of litmus solution were added to solution X, the solution turned red. There was no characteristic flame colour when a drop of X on the end of a platinum wire, was placed in a roaring bunsen flame. From these observations deduce the identity of solution X. [id-29]
1. hydrochloric acid, HCl
2. sulphuric acid, H₂SO₄
3. sodium hydroxide, NaOH
4. calcium hydroxide, Ca(OH)₂
To a colourless solution X, a few drops of dil. hydrochloric acid were added, followed by a few drops of barium chloride, and a white precipitate formed. When a few drops of litmus solution were added to solution X, the solution turned red. There was no characteristic flame colour when a drop of X on the end of a platinum wire, was placed in a roaring bunsen flame. From these observations deduce the identity of solution X. [id-30]
1. hydrochloric acid, HCl
2. sulphuric acid, H₂SO₄
3. sodium hydroxide, NaOH
4. calcium hydroxide, Ca(OH)₂
A colourless solution gave bright yellow flame colour when tested on the end of a platinum wire placed in a roaring bunsen flame. When a few drops of litmus solution were added to solution X, the solution turned blue. From these observations deduce the identity of solution X. [id-31]
1. hydrochloric acid, HCl
2. sulphuric acid, H₂SO₄
3. sodium hydroxide, NaOH
4. calcium hydroxide, Ca(OH)₂
A colourless solution gave a brick red colour flame when tested on the end of a platinum wire placed in a roaring bunsen flame. When a few drops of litmus solution were added to solution X, the solution turned blue. From these observations deduce the identity of solution X. [id-32]
1. hydrochloric acid, HCl
2. sulphuric acid, H₂SO₄
3. sodium hydroxide, NaOH
4. calcium hydroxide, Ca(OH)₂

GCSE Level Chemistry Quiz on 'Chemical tests for identifying gases, ions and compounds' practice exam questions for AQA Edexcel OCR

GCSE Level Chemistry Quiz on 'Chemical tests on identifying gases, ions and compounds' (re-edit)