Quiz on identifying TYPES OF CHEMICAL REACTION & Processes, deducing & recognising reaction type, practice exam revision questions for AQA, Edexcel, OCR, WJEC, CIE and CCEA GCSE level chemistry courses

Which of the following is a 'combustion reaction'? [rt-1]
1. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
2. NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
3. CaCO_3(s) ==> CaO_(s) + CO_2(g)
4. C₆H₁₂O_6(aq) ==> 2C₂H₅OH_(aq) + 2CO_2(g)
Which of the following is a 'neutralisation reaction'? [rt-2]
1. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
2. NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
3. CaCO_3(s) ==> CaO_(s) + CO_2(g)
4. C₆H₁₂O_6(aq) ==> 2C₂H₅OH_(aq) + 2CO_2(g)
Which of the following is a 'thermal decomposition' reaction? [rt-3]
1. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
2. NaOH_(aq) + HCl_(aq) ==> NaCl_(aq) + H₂O_(l)
3. CaCO_3(s) ==> CaO_(s) + CO_2(g)
4. C₆H₁₂O_6(aq) ==> 2C₂H₅OH_(aq) + 2CO_2(g)
Which of the following is a 'fermentation' reaction? [rt-4]
1. CH_4(g) + 2O_2(g) => CO_2(g) + 2H₂O_(l)
2. NaOH_(aq) + HCl_(aq) => NaCl_(aq) + H₂O_(l)
3. CaCO_3(s) => CaO_(s) + CO_2(g)
4. C₆H₁₂O_6(aq) ==> 2C₂H₅OH_(aq) + 2CO_2(g)
Which of the following is a 'combustion' reaction? [rt-5]
1. methane + oxygen => carbon dioxide + water
2. sodium hydroxide + hydrochloric acid => sodium chloride + water
3. calcium carbonate => calcium oxide + carbon dioxide
4. glucose => ethanol + carbon dioxide
Which of the following is a 'neutralisation' reaction? [rt-6]
1. methane + oxygen => carbon dioxide + water
2. sodium hydroxide + hydrochloric acid => sodium chloride + water
3. calcium carbonate => calcium oxide + carbon dioxide
4. glucose => ethanol + carbon dioxide
Which of the following is a 'thermal decomposition' reaction? [rt-7]
1. methane + oxygen => carbon dioxide + water
2. sodium hydroxide + hydrochloric acid => sodium chloride + water
3. calcium carbonate => calcium oxide + carbon dioxide
4. glucose => ethanol + carbon dioxide
Which of the following is a 'fermentation' reaction? [rt-8]
1. methane + oxygen => carbon dioxide + water
2. sodium hydroxide + hydrochloric acid => sodium chloride + water
3. calcium carbonate => calcium oxide + carbon dioxide
4. glucose => ethanol + carbon dioxide
Which is a 'neutralisation' reaction to form a soluble salt? [rt-9]
1. CuO_(s) + H₂SO_4(aq) ==> CuSO_4(aq) + H₂O_(l)
2. 2Al_(s) + Fe₂O_3(s) ==> 2Fe_(s) + Al₂O_3(s)
3. C₆H_14(g) ==> C₂H_4(g) + C₄H_10(g)
4. Ca(OH)_2(aq) + CO_2(g) ==> CaCO_3(s) + H₂O_(l)
Which of the following reactions is the 'thermit reaction'? [rt-10]
1. CuO_(s) + H₂SO_4(aq) => CuSO_4(aq) + H₂O_(l)
2. 2Al_(s) + Fe₂O_3(s) => 2Fe_(s) + Al₂O_3(s)
3. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
4. Ca(OH)_2(aq) + CO_2(g) => CaCO_3(s) + H₂O_(l)
Which of the following reactions is a 'cracking' reaction? [rt-11]
1. CuO_(s) + H₂SO_4(aq) => CuSO_4(aq) + H₂O_(l)
2. 2Al_(s) + Fe₂O_3(s) => 2Fe_(s) + Al₂O_3(s)
3. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
4. Ca(OH)_2(aq) + CO_2(g) => CaCO_3(s) + H₂O_(l)
Which of the following reactions is a 'precipitation' reaction? [rt-12]
1. CuO_(s) + H₂SO_4(aq) => CuSO_4(aq) + H₂O_(l)
2. 2Al_(s) + Fe₂O_3(s) => 2Fe_(s) + Al₂O_3(s)
3. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
4. Ca(OH)_2(aq) + CO_2(g) => CaCO_3(s) + H₂O_(l)
Which is a 'neutralisation' reaction to form a soluble salt? [rt-13]
1. copper(II) oxide + sulfuric acid => copper(II) sulfate + water
2. aluminium + iron(III) oxide => aluminium oxide + iron
3. hexane => ethene + butane
4. calcium hydroxide + carbon dioxide => calcium carbonate + water
Which of the following reactions is the 'thermit reaction? [rt-14]
1. copper(II) oxide + sulfuric acid => copper(II) sulfate + water
2. aluminium + iron(III) oxide => aluminium oxide + iron
3. hexane => ethene + butane
4. calcium hydroxide + carbon dioxide => calcium carbonate + water
Which of the following reactions is a 'cracking' reaction? [rt-15]
1. copper(II) oxide + sulfuric acid => copper(II) sulfate + water
2. aluminium + iron(III) oxide => aluminium oxide + iron
3. hexane => ethene + butane
4. calcium hydroxide + carbon dioxide => calcium carbonate + water
Which of the following reactions is a 'precipitation' reaction? [rt-16]
1. copper(II) oxide + sulfuric acid => copper(II) sulfate + water
2. aluminium + iron(III) oxide => aluminium oxide + iron
3. hexane => ethene + butane
4. calcium hydroxide + carbon dioxide => calcium carbonate + water
Which of the following is a 'displacement' reaction? [rt-17]
1. Mg_(s) + CuSO_4(aq) ==> Cu_(s) + MgSO_4(aq)
2. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
3. C₆H₁₂O_6(aq) + 6O_2(g) ==> 6CO_2(g) + 6H₂O_(l)
4. Na₂SO_4(aq) + BaCl_2(aq) ==> 2NaCl_(aq) + BaSO_4(aq)
Which of the following is a 'thermal decomposition'? [rt-18]
1. Mg_(s) + CuSO_4(aq) ==> Cu_(s) + MgSO_4(aq)
2. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
3. C₆H₁₂O_6(aq) + 6O_2(g) ==> 6CO_2(g) + 6H₂O_(l)
4. Na₂SO_4(aq) + BaCl_2(aq) ==> 2NaCl_(aq) + BaSO_4(aq)
Which of the following represents 'respiration'? [rt-19]
1. Mg_(s) + CuSO_4(aq) ==> Cu_(s) + MgSO_4(aq)
2. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
3. C₆H₁₂O_6(aq) + 6O_2(g) ==> 6CO_2(g) + 6H₂O_(l)
4. Na₂SO_4(aq) + BaCl_2(aq) ==> 2NaCl_(aq) + BaSO_4(aq)
Which of the following is a 'double decomposition'? [rt-20]
1. Mg_(s) + CuSO_4(aq) ==> Cu_(s) + MgSO_4(aq)
2. C₆H_14(g) => C₂H_4(g) + C₄H_10(g)
3. C₆H₁₂O_6(aq) + 6O_2(g) ==> 6CO_2(g) + 6H₂O_(l)
4. Na₂SO_4(aq) + BaCl_2(aq) ==> 2NaCl_(aq) + BaSO_4(aq)
Which of the following is a 'displacement' reaction? [rt-21]
1. magnesium + copper sulfate ==> copper + magnesium sulfate
2. hexane ==> ethene + butane
3. glucose + oxygen ==> carbon dioxide + water
4. sodium sulfate + barium chloride ==> sodium chloride + barium sulfate
Which of the following is a 'thermal decomposition'? [rt-22]
1. magnesium + copper sulfate ==> copper + magnesium sulfate
2. hexane ==> ethene + butane
3. glucose + oxygen ==> carbon dioxide + water
4. sodium sulfate + barium chloride ==> sodium chloride + barium sulfate
Which of the following represents 'respiration'? [rt-23]
1. magnesium + copper sulfate ==> copper + magnesium sulfate
2. hexane ==> ethene + butane
3. glucose + oxygen ==> carbon dioxide + water
4. sodium sulfate + barium chloride ==> sodium chloride + barium sulfate
Which of the following is a 'double decomposition'? [rt-24]
1. magnesium + copper sulfate ==> copper + magnesium sulfate
2. hexane ==> ethene + butane
3. glucose + oxygen ==> carbon dioxide + water
4. sodium sulfate + barium chloride ==> sodium chloride + barium sulfate
Which of A to D represents 'photosynthesis'? [rt-25]
1. 6CO_2(g) + 6H₂O_(l) ==> C₆H₁₂O_6(aq) + 6O_2(g)
2. n CH₂=CH₂ ==> (-CH₂-CH₂-)_n
3. N_2(g) + 3H_2(g) 2NH_3(g)
4. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
Which of A to D represents a 'polymerisation' reaction? [rt-26]
1. 6CO_2(g) + 6H₂O_(l) ==> C₆H₁₂O_6(aq) + 6O_2(g)
2. n CH₂=CH₂ ==> (-CH₂-CH₂-)_n
3. N_2(g) + 3H_2(g) 2NH_3(g)
4. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
Which of A to D represents a 'reversible' reaction? [rt-27]
1. 6CO_2(g) + 6H₂O_(l) ==> C₆H₁₂O_6(aq) + 6O_2(g)
2. n CH₂=CH₂ ==> (-CH₂-CH₂-)_n
3. N_2(g) + 3H_2(g) 2NH_3(g)
4. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
Which of A to D represents a 'burning' reaction? [rt-28]
1. 6CO_2(g) + 6H₂O_(l) ==> C₆H₁₂O_6(aq) + 6O_2(g)
2. n CH₂=CH₂ ==> (-CH₂-CH₂-)_n
3. N_2(g) + 3H_2(g) 2NH_3(g)
4. CH_4(g) + 2O_2(g) ==> CO_2(g) + 2H₂O_(l)
Which of A to D represents 'photosynthesis'? [rt-29]
1. carbon dioxide + water ==> glucose + oxygen
2. ethene ==> poly(ethene)
3. nitrogen + hydrogen ammonia
4. methane + oxygen ==> carbon dioxide + water
Which of A to D represents a 'plastic forming' reaction? [rt-30]
1. carbon dioxide + water ==> glucose + oxygen
2. ethene ==> poly(ethene)
3. nitrogen + hydrogen ammonia
4. methane + oxygen ==> carbon dioxide + water
Which of A to D represents a 'reversible' reaction? [rt-31]
1. carbon dioxide + water ==> glucose + oxygen
2. ethene ==> poly(ethene)
3. nitrogen + hydrogen ammonia
4. methane + oxygen ==> carbon dioxide + water
Which of A to D represents a 'burning' reaction? [rt-32]
1. carbon dioxide + water ==> glucose + oxygen
2. ethene ==> poly(ethene)
3. nitrogen + hydrogen ammonia
4. methane + oxygen ==> carbon dioxide + water
Which description means an 'EXOTHERMIC REACTION'? [rt-33]
1. heat is given out by the reaction
2. heat is taken in by the reaction
3. the reaction readily changes direction if the conditions are changed
4. the reaction continues in both directions but no concentrations change
Which description means an 'ENDOTHERMIC REACTION'? [rt-34]
1. heat is given out by the reaction
2. heat is taken in by the reaction
3. the reaction readily changes direction if the conditions are changed
4. the reaction continues in both directions but no concentrations change
Which description means a 'REVERSIBLE REACTION'? [rt-35]
1. heat is given out by the reaction
2. heat is taken in by the reaction
3. the reaction readily changes direction if the conditions are changed
4. the reaction stops in both directions and no concentrations change
Which description means a 'CHEMICAL EQUILIBRIUM'? [rt-36]
1. heat is given out by the reaction
2. heat is taken in by the reaction
3. the reaction readily changes direction if the conditions are changed
4. the reaction continues in both directions but no concentrations change
Which of the following is an ENDOTHERMIC chemical change? [rt-37]
1. calcium carbonate => calcium oxide + carbon dioxide
2. methane + oxygen => carbon dioxide + water
3. sodium hydroxide + hydrochloric acid => sodium chloride + water
4. glucose + oxygen => water + carbon dioxide
Which of the following is an ENDOTHERMIC chemical change? [rt-38]
1. methane + oxygen => carbon dioxide + water
2. hexane => ethane + propene
3. sodium hydroxide + hydrochloric acid => sodium chloride + water
4. glucose + oxygen => water + carbon dioxide
Which of the following is an ENDOTHERMIC chemical change? [rt-39]
1. sodium hydroxide + hydrochloric acid => sodium chloride + water
2. methane + oxygen => carbon dioxide + water
3. water + carbon dioxide => glucose + oxygen
4. glucose + oxygen => water + carbon dioxide
Which of the following is an ENDOTHERMIC chemical change? [rt-40]
1. sodium hydroxide + hydrochloric acid => sodium chloride + water
2. methane + oxygen => carbon dioxide + water
3. glucose + oxygen => water + carbon dioxide
4. sodium chloride => sodium + chlorine
Which of the following is an EXOTHERMIC chemical change? [rt-41]
1. sodium hydroxide + hydrochloric acid => sodium chloride + water
2. calcium carbonate => calcium oxide + carbon dioxide
3. hexane => ethane + propene
4. water + carbon dioxide => glucose + oxygen
Which of the following is an EXOTHERMIC chemical change? [rt-42]
1. calcium carbonate => calcium oxide + carbon dioxide
2. methane + oxygen => carbon dioxide + water
3. hexane => ethane + propene
4. water + carbon dioxide => glucose + oxygen
Which of the following is an EXOTHERMIC chemical change? [rt-43]
1. calcium carbonate => calcium oxide + carbon dioxide
2. hexane => ethane + propene
3. glucose + oxygen => water + carbon dioxide
4. sodium chloride => sodium + chlorine
Which of the following is an EXOTHERMIC chemical change? [rt-44]
1. calcium carbonate => calcium oxide + carbon dioxide
2. hexane => ethane + propene
3. water + carbon dioxide => glucose + oxygen
4. sodium + chlorine => sodium chloride
Which ionic equation is an 'acid-alkali neutralisation'? [rt-45]
1. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
2. MgO_(s) + 2H⁺_(aq) ==> Mg²⁺_(aq) + H₂O_(l)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
Which ionic equation is an 'acid-insoluble base neutralisation'? [rt-46]
1. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
2. MgO_(s) + 2H⁺_(aq) ==> Mg²⁺_(aq) + H₂O_(l)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
Which ionic equation corresponds to a 'non-redox precipitation reaction'? [rt-47]
1. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
2. MgO_(s) + 2H⁺_(aq) ==> Mg²⁺_(aq) + H₂O_(l)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
Which ionic equation corresponds to a 'redox reaction'? [rt-48]
1. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
2. MgO_(s) + 2H⁺_(aq) ==> Mg²⁺_(aq) + H₂O_(l)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. Zn_(s) + Cu²⁺_(aq) ==> Zn²⁺_(aq) + Cu_(s)
Which of the following represents a 'reduction only' change? [rt-49]
1. Cu²⁺_(aq) + 2e^- ==> Cu_(s)
2. Zn_(s) - 2e^- ==> Zn²⁺_(s)
3. Mg_(s) + Fe²⁺_(aq) ==> Mg²⁺_(aq) + Fe_(s)
4. 2Cl^-_(aq) - 2e^- ==> Cl_{2 (g)}
Which of the following represents an 'oxidation only' change? [rt-50]
1. Cu²⁺_(aq) + 2e^- ==> Cu_(s)
2. Zn_(s) - 2e^- ==> Zn²⁺_(s)
3. Mg_(s) + Fe²⁺_(aq) ==> Mg²⁺_(aq) + Fe_(s)
4. Cl_{2 (aq)} +2e^- ==> 2Cl^-_(aq)
Which of the following is a complete 'redox' equation and not a half-equation? [rt-51]
1. Cu²⁺_(aq) + 2e^- ==> Cu_(s)
2. Cl_{2 (aq)} +2e^- ==> 2Cl^-_(aq)
3. Mg_(s) + Fe²⁺_(aq) ==> Mg²⁺_(aq) + Fe_(s)
4. 2Cl^-_(aq) - 2e^- ==> Cl_{2 (g)}
Which of the following represents an 'oxidation only' change? [rt-52]
1. Cu²⁺_(aq) + 2e^- ==> Cu_(s)
2. Br_{2 (aq)} + 2e^- ==> 2Br^-_(aq)
3. Mg_(s) + Fe²⁺_(aq) ==> Mg²⁺_(aq) + Fe_(s)
4. 2Cl^-_(aq) - 2e^- ==> Cl_{2 (g)}
Which of the following is a complete 'redox' reaction and not a half-reaction? [rt-53]
1. Cl_{2 (aq)} + 2I^-_(aq) ==> 2Cl^-_(aq) + I_{2 (aq)}
2. Br_{2 (aq)} + 2e^- ==> 2Br^-_(aq)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
Which is a 'reduction only' reaction? [rt-54]
1. Cl_{2 (aq)} + 2I^-_(aq) ==> 2Cl^-_(aq) + I_{2 (aq)}
2. Br_{2 (aq)} + 2e^- ==> 2Br^-_(aq)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
Which does 'NOT involve an oxidation or reduction' reaction? [rt-55]
1. Cl_{2 (aq)} + 2I^-_(aq) ==> 2Cl^-_(aq) + I_{2 (aq)}
2. Br_{2 (aq)} + 2e^- ==> 2Br^-_(aq)
3. Ag⁺_(aq) + Cl^-_(aq) ==> AgCl_(s)
4. Mg_(s) + Fe²⁺_(aq) ==> Mg²⁺_(aq) + Fe_(s)
Which of the following does NOT involve an oxidation or reduction' reaction? [rt-56]
1. Cl_{2 (aq)} + 2I^-_(aq) ==> 2Cl^-_(aq) + I_{2 (aq)}
2. Br_{2 (aq)} + 2e^- ==> 2Br^-_(aq)
3. Zn_(s) - 2e^- ==> Zn²⁺_(s)
4. H⁺_(aq) + OH^-_(aq) ==> H₂O_(l)
For the following reaction: Fe₂O₃ + 3CO ==> 2Fe + 3CO₂
Which is 'reduced? [rt-57]
1. Fe₂O₃
2. CO
3. Fe
4. CO₂
For the following reaction: Fe₂O₃ + 3CO ==> 2Fe + 3CO₂
Which is 'oxidised? [rt-58]
1. Fe₂O₃
2. CO
3. Fe
4. CO₂
For the following reaction: Fe₂O₃ + 3CO ==> 2Fe + 3CO₂
Which acts as an 'oxidising agent? [rt-59]
1. Fe
2. CO₂
3. Fe₂O₃
4. CO
For the following reaction: Fe₂O₃ + 3CO ==> 2Fe + 3CO₂
Which acts as an 'reducing agent? [rt-60]
1. Fe
2. CO₂
3. Fe₂O₃
4. CO
Which of the following corresponds to the 'Haber Synthesis'? [rt-61]
1. N_{2 (g)} + 3H_{2 (g)} ==> 2NH_{3 (g)}
2. 2SO_{2 (g)} + O_{2 (g)} ==> 2SO_{3 (g)}
3. CaCO_{3 (s)} => CaO_(s) + CO_{2 (g)}
4. 2CO_(g) + 2NO_(g) ==> 2CO_{2 (g)} + N_{2 (g)}
Which of the following corresponds to the 'Contact Process'? [rt-62]
1. N_{2 (g)} + 3H_{2 (g)} ==> 2NH_{3 (g)}
2. 2SO_{2 (g)} + O_{2 (g)} ==> 2SO_{3 (g)}
3. CaCO_{3 (s)} => CaO_(s) + CO_{2 (g)}
4. 2CO_(g) + 2NO_(g) ==> 2CO_{2 (g)} + N_{2 (g)}
Which of the following corresponds to the 'limekiln reaction'? [rt-63]
1. N_{2 (g)} + 3H_{2 (g)} ==> 2NH_{3 (g)}
2. 2SO_{2 (g)} + O_{2 (g)} ==> 2SO_{3 (g)}
3. CaCO_{3 (s)} => CaO_(s) + CO_{2 (g)}
4. 2CO_(g) + 2NO_(g) ==> 2CO_{2 (g)} + N_{2 (g)}
Which of the following corresponds to 'catalytic conversion' in a car exhaust? [rt-64]
1. N_{2 (g)} + 3H_{2 (g)} ==> 2NH_{3 (g)}
2. 2SO_{2 (g)} + O_{2 (g)} ==> 2SO_{3 (g)}
3. CaCO_{3 (s)} => CaO_(s) + CO_{2 (g)}
4. 2CO_(g) + 2NO_(g) ==> 2CO_{2 (g)} + N_{2 (g)}
For the reaction: copper(II) oxide + hydrogen ==> copper + water
... which of the following is 'reduced'? [rt-65]
1. copper(II) oxide
2. hydrogen
3. copper
4. water
For the reaction: copper(II) oxide + hydrogen ==> copper + water
... which of the following is 'oxidised'? [rt-66]
1. copper(II) oxide
2. hydrogen
3. copper
4. water
For the reaction: copper(II) oxide + hydrogen ==> copper + water
... which of the following acts as the 'oxidising agent'? [rt-67]
1. copper
2. water
3. copper(II) oxide
4. hydrogen
For the reaction: copper(II) oxide + hydrogen ==> copper + water
... which of the following acts as the 'reducing agent'? [rt-68]
1. copper
2. water
3. copper(II) oxide
4. hydrogen
Which of the following corresponds to 'a hydration reaction'? [rt-69]
1. ethene + water ==> ethanol (using acid catalyst)
2. blue copper sulfate ==> white copper sulfate + water (on heating the salt)
3. sugar solution ==> ethanol + carbon dioxide (using yeast)
4. methane + oxygen ==> carbon dioxide + water (burning reaction)
Which of the following corresponds to 'a dehydration reaction'? [rt-70]
1. ethene + water ==> ethanol (using acid catalyst)
2. blue copper sulfate ==> white copper sulfate + water (on heating the salt)
3. sugar solution ==> ethanol + carbon dioxide (using yeast)
4. methane + oxygen ==> carbon dioxide + water (burning reaction)
Which of the following corresponds to 'a dehydration reaction'? [rt-71]
1. ethene + water ==> ethanol (using acid catalyst)
2. sugar solution ==> ethanol + carbon dioxide (using yeast)
3. sugar ==> carbon + water (using concentrated sulfuric acid)
4. methane + oxygen ==> carbon dioxide + water (burning reaction)
Which of the following corresponds to 'a dehydration reaction'? [rt-72]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water (neutralisation)
2. sugar solution ==> ethanol + carbon dioxide (using yeast)
3. methane + oxygen ==> carbon dioxide + water (burning reaction)
4. ethanol ==> ethene + water (using acid catalyst)
Which of the following corresponds to 'a hydration reaction'? [rt-73]
1. white copper sulfate + water ==> blue copper sulfate (adding cold water)
2. sugar solution ==> ethanol + carbon dioxide (using yeast)
3. methane + oxygen ==> carbon dioxide + water (burning reaction)
4. ethanol ==> ethene + water (using acid catalyst)
Which of the following corresponds to 'a hydration reaction'? [rt-74]
1. CuSO₄.5H₂O ==> CuSO₄ + 5H₂O
2. CH₂=CH₂ + H₂O ==> CH₃CH₂OH
3. C₆H₁₂O₆ ==> 2CH₃CH₂OH + 2CO₂
4. C₆H₁₂O₆ ==> 6C + 6H₂O
Which of the following corresponds to 'a dehydration reaction'? [rt-75]
1. C₆H₁₂O₆ ==> 2CH₃CH₂OH + 2CO₂
2. CH₂=CH₂ + H₂O ==> CH₃CH₂OH
3. CuSO₄.5H₂O ==> CuSO₄ + 5H₂O
4. CH₄ + 2O₂ ==> CO₂ + 2H₂O
Which of the following corresponds to 'a dehydration reaction'? [rt-76]
1. C₆H₁₂O₆ ==> 2CH₃CH₂OH + 2CO₂
2. CH₂=CH₂ + H₂O ==> CH₃CH₂OH
3. CH₄ + 2O₂ ==> CO₂ + 2H₂O
4. C₆H₁₂O₆ ==> 6C + 6H₂O
Which of the following corresponds to 'a dehydration reaction'? [rt-77]
1. CH₃CH₂OH ==> CH₂=CH₂ + H₂O
2. C₆H₁₂O₆ ==> 2CH₃CH₂OH + 2CO₂
3. CH₄ + 2O₂ ==> CO₂ + 2H₂O
4. CuSO₄ + 5H₂O ==> CuSO₄.5H₂O
Which of the following corresponds to 'a hydration reaction'? [rt-78]
1. CH₃CH₂OH ==> CH₂=CH₂ + H₂O
2. CuSO₄ + 5H₂O ==> CuSO₄.5H₂O
3. CH₄ + 2O₂ ==> CO₂ + 2H₂O
4. C₆H₁₂O₆ ==> 6C + 6H₂O

GCSE level m/c quiz on "Types of chemical reactions and processes"