Synoptic multiple choice by nasif123

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									                            SYNOPTIC MULTIPLE CHOICE QUESTIONS



1.     Which one of the following is the electronic configuration of an element with a maximum
       oxidation state of +5?

       A      1s2 2s2 2p5

       B      1s2 2s2 2p6 3s2 3p1

       C      1s2 2s2 2p6 3s2 3p3

       D      1s2 2s2 2p6 3s2 3p6 3d7 4s2



2.     Which one of the following species can be oxidised?

       A      NO2

       B      SnO2

       C      MgO

       D      SO3



3.     Which one of the following does not have an isomer?

       A      CH3CH(CH3)CH2CH3

       B      CHCl=CHCl

       C      CH2C1Br

       D      Co(NH3)4C12



4.     Which one of the following would not be oxidised by a warm acidified solution of potassium
       manganate (VII)?

       A      CH3CHO

       B      CH3CH2OH

       C      Cu2+

       D      Fe2+




Mill Hill High School                                                                               1
5.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Which of the following is/are true for both ammonia and water molecules?

       (i)       They have bond angles less than 109°.

       (ii)      They are Lewis acids.

       (iii)     They are hydrogen-bonded in the liquid state.

       (iv)      They are electrophiles.



6.     Consider the compounds in the following lists.

                         List A                                   List B

                         NH4Cl                                    NH4NO3
                         (NH4)2SO4                                (NH4)2Cr2O7
                         NH4F                                     NH4MnO4

       The compounds in list A are stable, those in list B are potentially explosive.
       Which factor could be responsible for this difference in stability?

       A         The size of the anions.

       B         The oxidising power of the anions.

       C         The oxidising power of the ammonium ions.

       D         The compounds in list B are salts of weak acids.



7.     Concentrated hydrochloric acid does not react with

       A         Na2CO3(s)

       B         CoCl2(s)

       C         Zn(s)

       D         NaCl(s)




Mill Hill High School                                                                           2
8.     Which one of the following is not a true statement?

       A      On going across Period 3 (Na to Cl) the atomic radius increases.

       B      On going down Group II (Be to Ba) the ionic radius increases.

       C      On going down Group II (Be to Ba) the ionisation energy decreases.

       D      On going down Group VII(F to I) the E       value for X2  X– decreases.



9.     For this question one or more of the options given may be correct. Select your answer by means
       of the following code

       A      if (1), (2) and (3) only are correct
       B      if (1) and (3) only are correct
       C      if (2) and (4) only are correct
       D      if (4) alone is correct

                                                 Directions summarised
                        A                        B                       C                    D
               (1), (2) and (3)             (1) and (3)             (2) and (4)            (4) only
                only correct               only correct            only correct             correct

       Methylbenzene can be made by reacting benzene with chloromethane in the presence of
       aluminium chloride. The role of the aluminium chloride in this reaction can be described as

       (1)    electron-pair acceptor.

       (2)    Lewis base.

       (3)    catalyst.

       (4)    oxidising agent.



10.    0.00125 mol of a compound was heated with an excess of a solution of potassium hydroxide and
       the ammonia evolved required 17.0 cm3 of 0.220 M hydrochloric acid for neutralisation. Which
       one of the following could be the formula of this compound?

       A      BF3NH3

       B      VCl3(NH3)3

       C      CrCl2(NH3)2

       D      [Be(NH3)4]Cl2




Mill Hill High School                                                                                   3
11.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Endothermic reactions include

       (i)       H2(g)  2H(g)

       (ii)      Na+(g) + e–  Na(g)

       (iii)     CH3CH2CH3(g)  CH2=CH2(g) + CH4(g)

       (iv)      Cl(g) + e–  Cl–(g)



12.    Which one of the following chlorine compounds is not hydrolysed by water at room
       temperature?

       A         CH3Cl

       B         CH3COCl

       C         AlCl3

       D         PCl5



13.    The compound lithium tetrahydridoaluminate(III), LiAlH4, is a useful reducing agent. It behaves
       in a similar fashion to NaBH4. Carbonyl compounds and carboxylic acids are reduced to
       alcohols. However, LiAlH4 also reduces water in a violent reaction so that it must be used in an
       organic solvent.

       Which one of the following concerning the violent reaction between LiAlH4 and water is false?

       A         A gas is produced.

       B         The activation energy for the reaction is relatively high.

       C         The reaction has a negative free-energy change.

       D         Aqueous lithium ions are formed.




Mill Hill High School                                                                                     4
14.    Which one of the following is a correct procedure for isolating a sample of hydrated copper(II)
       sulphate from a mixture of hydrated copper(II) sulphate and barium sulphate?

       A         filter, crystallise filtrate, dry the crystals

       B         filter, dry the solid on the filter paper

       C         add water, filter, dry the solid left on the filter paper

       D         add water, filter, crystallise filtrate, dry the crystals



15.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                         C                 D
             (i), (ii) and (iii)   (i) and (iii) correct     (ii) and (iv) correct   (iv) alone
               correct only                only                      only              correct

       Which of the following react(s) with water to give an alkaline solution?

       (i)       NH3

       (ii)      CH3COONa

       (iii)     Na2O

       (iv)      CH3CH2OH



16.    The percentage of iron in a sample of impure iron(II) sulphate crystals can be determined by
       titrating solutions, made from separate weighed samples acidified with dilute sulphuric acid,
       against a standard solution of potassium manganate(VII).

       Which one of the following would lead to the greatest error in the calculation of the percentage
       of iron(II) in the sample?

       A         an error of 0.005 g made when weighing out a sample of mass 0.987 g

       B         an end-point error of 0.1 cm3 in 25.0 cm3

       C         an error of 5cm3 when measuring out 25.0 cm3 of dilute sulphuric acid

       D         using the average of the titration values 25.4, 25.7 and 25.9 when the correct value is
                 25.5 cm3




Mill Hill High School                                                                                      5
17.    Which one of the following statements is true?

       A         A blue solution containing the ion [CoCl4]2– turns pink when added to an excess of
                 water.

       B         A purple solution is formed when chlorine is bubbled into aqueous sodium bromide,

       C         A yellow precipitate is formed when aqueous silver nitrate is added to aqueous sodium
                 chloride.

       D         A green solution containing the ion [CuCl4]2– turns blue when added to an excess of
                 concentrated hydrochloric acid.



18.    Which one of the following can act as an oxidising agent but not as a reducing agent?

       A         CH3CHO

       B         Fe2+

       C         I–

                     –
       D          MnO4



19.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Which of the following statements about a catalyst is/are true?

       (i)       It speeds up the forward reaction and slows down the reverse reaction.

       (ii)      It increases the proportion of molecules with higher energies.

       (iii)     A homogeneous catalyst usually acts in the solid state.

       (iv)      It does not alter the value of the equilibrium constant.




Mill Hill High School                                                                                    6
20.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Which of the following give(s) a colour change on warming with an acidified solution of
       potassium dichromate(VI)?

       (i)       CH3CH2OH

       (ii)      Zn

       (iii)     NaOH

       (iv)      (CH3)3COH



21.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Amphoteric character is shown by

       (i)       Al(OH)3

       (ii)      CH3CH(OH)CN

       (iii)     H2NCH2COOH

       (iv)      MgO




Mill Hill High School                                                                            7
22.
             Summarised directions for recording responses to multiple completion questions

                      A                      B                       C                 D
             (i), (ii) and (iii)   (i) and (iii) correct   (ii) and (iv) correct   (iv) alone
               correct only                only                    only              correct

       Deduce which of the following statements concerning rubidium carbonate are true.

       (i)       It has the formula RbCO3

       (ii)      It forms FeCO3 when added to iron(II) sulphate solution

       (iii)     It contains ionic bonds only

       (iv)      It causes effervescence when added to titanium(III) chloride solution




Mill Hill High School                                                                           8

								
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