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Group 2, 7 and Redox test

Quiz by Gill

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20 questions
Show answers
  • Q1
    Which statement about barium sulfate is correct?
    It is soluble in water at a temperature of 100 °C.
    It is used in medicine because it does not dissolve in body fluids.
    It reacts with acidified barium chloride solution.
    It is a pale yellow solid.
    30s
  • Q2
    Which of these decreases down Group 2?
    Reactivity with water
    First ionisation energy
    Atomic radius
    Number of protons
    30s
  • Q3
    Which one of the following solutions would not give a white precipitate when added to barium chloride solution?
    dilute sulphuric acid
    silver nitrate solution
    sodium nitrate solution
    sodium sulphate solution
    30s
  • Q4
    Which of these is a redox reaction?
    CaO + SiO2 ⟶ CaSiO3
    NaBr + H2SO4 ⟶ NaHSO4 + HBr
    Mg + S ⟶ MgS
    H2SO4 + Na2O ⟶ Na2SO4 + H2O
    30s
  • Q5
    In which one of the following reactions is H2O2 behaving as a reducing agent?
    H2O2 + 2[Co(NH3)6]2+ → 2[Co(NH3)6]3+ + 2OH−
    5H2O2 + 2MnO4- + 6H+ → 2Mn2+ + 8H2O + 5O2
    3H2O2 + 2[Cr(OH)6]3− → 2CrO42-+ 8H2O + 2OH−
    H2O2 + 2I− + 2H+ → I2 + 2H2O
    30s
  • Q6
    In which one of the following reactions do two H ions and one electron have to be added to the left-hand side in order to balance the equation?
    NO3- → HNO2 + H2O
    VO2+ → V3+ + H2O
    HOCl → Cl2 + H2O
    CH3CHO → CH3CH2OH
    30s
  • Q7
    Which species contains an element with an oxidation state of +4?
    H2SO3
    ClO3−
    NO2+
    PCl5
    30s
  • Q8
    Which compound is used to treat the symptoms of indigestion?
    CaO
    Mg(OH)2
    Ca(OH)2
    MgO
    30s
  • Q9
    In which reaction is hydrogen acting as an oxidising agent?
    2Na + H2  --> 2NaH
    Cl2 + H2 --> 2HCl
    N2 + 3H2 --> 2NH3
    (CH3)2CO + H2 -->  (CH3)2CHOH
    30s
  • Q10
    Which of these shows nitrogen in its correct oxidation states in the compounds given?
    The boiling point of the element increases.
    The electronegativity of the atom decreases.
    The first ionisation energy of the atom decreases.
    The oxidising power of the element increases.
    30s
  • Q11
    Which one of the following is not a correct trend down Group VII?
    The oxidising power of the element increases.
    The first ionisation energy of the atom decreases.
    The boiling point of the element increases.
    The electronegativity of the atom decreases.
    30s
  • Q12
    Which one of the following statements is true?
    Silver iodide is soluble in aqueous ammonia.
    Concentrated sulphuric acid liberates chlorine from solid sodium chloride.
    Chlorine liberates fluorine from aqueous sodium fluoride.
    Bromine liberates iodine from aqueous sodium iodide.
    30s
  • Q13
    Which species is not produced by a redox reaction between solid sodium iodide and concentrated sulfuric acid?
    Na2SO4
    S
    H2S
    SO2
    30s
  • Q14
    An aqueous solution of a sodium salt gave no precipitate when treated with either silver nitrate solution or barium chloride solution. Which one of the following could be the formula of the sodium salt?
    NaI
    NaBr
    NaF
    Na2SO4
    30s
  • Q15
    Which species is the best oxidising agent?
    Cl2
    Br−
    Br 2
    Cl−
    30s

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