The entire quiz question bank (Double only)! This quiz pulls questions at random from the entire Double-only question-bank Loading... 1. In aluminium extraction, what is the ionic half-equation for the reaction at the negative electrode?Al²⁺ + 2e⁻ → AlAl³⁺ + 3e⁻ → AlAl³⁺ → Al + 3e⁻Al²⁺ → Al + 2e⁻ Question 1 of 10 Loading... 2. State the meaning of the term redoxA reduction reactionA reaction involving electronsAn oxidation reactionA reaction involving both reduction and oxidationQuestion 2 of 10 Loading... 3. What will happen to the yield of C when the temperature is increased? Give a reason for your prediction. A (g) + B (g) ⇋ C (g) (+∆H)Increases because the forward reaction is endothermicDecreases because the backward reaction is endothermicIncreases because the forward reaction is exothermicDecreases because the backward reaction is exothermicQuestion 3 of 10 Loading... 4. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of chlorine (Cl₂), how many electrons should be shown in areas 1, 2 and 3?There should be two electrons in area 2 and six in each of areas 1 and 3There should be two electrons in area 2 and seven in each of areas 1 and 3There should be four electrons in each of areas 1, 2 and 3There should be four electrons in area 2 and three in each of areas 1 and 3Question 4 of 10 Loading... 5. What is the test for iron (II) ions (Fe²⁺) and what is the result?Flame test. Flame colour is lilacFlame test. Flame colour is redAdd NaOH. A blue precipitate forms.Add NaOH. A green precipitate forms.Question 5 of 10 Loading... 6. Which two substances are added when testing for the sulfate (SO₄²⁻) ions? (2)Dilute HCl, followed by silver nitrate (AgNO₃)Dilute HNO₃, followed by silver nitrate (AgNO₃)Dilute HCl, followed by barium chloride (BaCl₂)Dilute HNO₃, followed by barium chloride (BaCl₂)Question 6 of 10 Loading... 7. What is the name of this molecule?butenepropenepenteneetheneQuestion 7 of 10 Loading... 8. In terms of electrons, what is oxidation?Oxidation is the gain of oxygenOxidation is the gain of electronsOxidation is the sharing of electronsOxidation is the loss of electronsQuestion 8 of 10 Loading... 9. What are the two main methods of extracting metals?Electrolysis and decompositionPrecipitation and electrolysisDecomposition and precipitationElectrolysis and displacementQuestion 9 of 10 Loading... 10. How does sulfur dioxide form in car engines?When the petrol combusts the sulfur dioxide impurities are left behindThe metals the car is made from contain some impurities of sulfur and when the engine heats up, some sulfur dioxide is formedAcid rain causes some sulfur impurities to get into the car engine, and when the petrol combusts some sulfur dioxide is formedPetrol includes the impurity sulfur, and when the petrol combusts some sulfur dioxide is formedQuestion 10 of 10 Loading... Related Posts:The entire quiz question bank!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quizAlcohols & Carboxylic Acids quiz Hydr0Gen2022-03-09T21:20:41+00:00Categories: Uncategorized|Tags: Quiz| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
