chpracquiz_ csec chemistry multiple choice test 1

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1Marks:1

Chooseoneanswer.

A. Decomposition reactions B. Diffusion C. Distillation D. Displacement reactions

Which process provides direct evidence in support of theparticulate nature of matter?

CorrectMarks for this submission: 1/1.

2Marks:1

Chooseoneanswer.

A. Condensation B. Boiling C. Sublimation D. freezing

Which of the following best describes the effect of heat on iodinecrystals?

CorrectMarks for this submission: 1/1.

3Marks:1

Chooseoneanswer.

A. Evaporation occurs at the surface while boilingtakes place throughout the liquid B. Evaporation occurs spontaneously at alltemperatures while boiling occurs at oneparticular temperature for a given external

Which of the following statements is INCORRECT about evaporation andboiling?

Practice Chemistry Quiz

CSEC Chemistry Multiple Choice Test 1

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Started on Saturday, 24 March 2012, 10:28 PMCompleted on Saturday, 24 March 2012, 10:31 PM

Time taken 2 mins 55 secsRaw score 2/60 (3%)

Grade 0.33 out of a maximum of 10

pressure C. Evaporation occurs when individual particlesescape the surface of a liquid while boiling occurswhen a liquid is freely converted to a gas. D. The rate of evaporation and boiling decreasesif the temperature of the liquid rises

IncorrectMarks for this submission: 0/1.

4Marks:1

Chooseoneanswer.

A. a B. b C. c D. d

The insoluble salt barium sulphate, BaSO4 , can be prepared in a school’s

laboratory by mixing which two reagents?

a. BaCO3(s) and HCl(aq)

b. BaCl2(aq) and H2SO4(aq)

c. BaCl2(aq) and Ba(NO3)2(aq)

d. Ba(s) and SO3(g)

BaCl2(aq) + H2SO4(aq) → BaSO4(s) + 2HCl(aq)

The correct answer is B


5Marks:1

Chooseoneanswer.

A. It is only partially ionized in solution B. It reacts with aqueous sodium hydroxide C. It is a tribasic acid D. motor solution has a pH of 1.5

Ethanoic acid, CH3COOH, is a weak acid. Which of the followingproperties is NOT true of CH3COOH?

Ethanoic acid has four (4) hydrogen atoms but only one (thecarboxylic hydrogen) is replaceable, it is therefore a monobasicacid.IncorrectMarks for this submission: 0/1.

6Marks:1

Which statement(s) about carbon monoxide is/are correct?

[I] It is a neutral oxide

[II] It dissolves in water to form an acid

[III] It is a colourless, poisonous gas

Chooseoneanswer.

A. I only B. I and III only C. I and II only D. I, II, and III

The correct answer is B.

Carbon monoxide is a neutral oxide which is insoluble in water, itis colourless and poisonous.


7Marks:1 Choose

oneanswer.

A. Calcium Chloride B. Magnesium Chloride C. Sodium Chloride D. Silver Chloride

Which of the following salts is insoluble in water?

The correct answer is D.

All chlorides are soluble in water except AgCl and PbCl2IncorrectMarks for this submission: 0/1.

8Marks:1

Chooseoneanswer.

A. Moist red litmus paper turns blue B. Moist red litmus stays red C. Moist blue litmus turns red D. Moist red litmus is bleached

Which observation is likely to be made when aqueous sodiumhydroxide is added to aqueous ammonium chloride and themixture warmed in a test tube to which litmus paper is held atthe mouth?

The correct answer is A.

Ammonia gas should be liberated. This is a basic gas whichshould turn damp red litmus blue


9Marks:1

S, T, U, and V are four oxides. S is amphoteric; T is basic; U isacidic; V is neutral. It is possible that the oxides are:

S T U V

A. PbO, H2O, Na2O, CO2

B. PbO, H2O, CO2, Na2O

Chooseoneanswer.

A B C D

C. Al2O3, Na2O, CO2, H2O

D. Al2O3, CO2, Na2O, H2O


10Marks:1

Chooseoneanswer.

A. A B. B C. C D. D

A solid M was burnt in air. Combustion produced two gases A andB which were passed through water. The pH of the solutions weredetermined and the values were 6.2 and 7.1 respectively. Thegases A and B could be:

A. CO CO2

B. CO2 CO

C. CO2 NH3

D. NH3 CO2

The correct answer is B.

CO2 forms H2CO3 which is a weak acid; approx. 6

CO is neutral hence the pH of the solution is that of the water;approx. 7


11Marks:1

Chooseoneanswer.

a. Colourless to brown b. Brown to colourless c. White to colourless d. Colourless to white

When aqueous hydrogen peroxide (H2O2) is added to aqueous potassium iodide

(KI), a redox reaction takes place. What colour change is likely to occur?

The two reagents are colorless. However, as H2O2 liberates iodine from KI, the

solution becomes brown (Iodine is brown).


12Marks:1

Chooseoneanswer.

a. Concentrated HCl(aq) b. Concentrated NaOH(aq) c. Aqueous hydrogen sulphide d. Aqueous hydrogen peroxide

An unknown compound P is added to three different reagents and the followingcolour changes were observed.

Reagent Aqueousiron(II) chloride

Acidifiedpotassiummanganate(VII)

Aqueouspotassiumiodide

Observation Pale green tobrown

purple to palepink

Colorless todark brown

Compound P could be:

The correct answer is D.

From the observations, compound P is an oxidizing agent. H2O2is the only selection with oxidizing capabilities. Note that H2O2has both oxidizing and reducing properties.IncorrectMarks for this submission: 0/1.

13Marks:1

Chooseoneanswer.

A. bonds in the reactants were broken B. bonds in the products were formed C. the products contained less energy than thereactants D. the reactants contained less energy than theproducts

The question refers to the following information:

A piece of calcium is added to some distilled water in acontainer. The following observations were recorded.

[I] The container initially felt warm but cooled upon standing forabout 30 minutes.

The container becoming warm implies that:


14Marks:1 Choose

oneanswer.

A. the condensation of steam B. the melting of ice C. dissolving ammonium chloride in water D. the evaporation of water

Which one of the following processes is exothermic in nature?


15Marks:1 Choose

oneanswer.

A. photosynthesis B. respiration C. combustion D. dilution of concentrated sulphuric acid

Which of the following is an endothermic process?


16Marks:1

Chooseoneanswer.

A. Condensation B. Freezing C. Sublimation D. Melting

Which one of the following processes does not provide directevidence of an exothermic change?


17Marks:1

Chooseoneanswer.

A. the energy of the reactants is greater than theenergy of the product B. the energy of the reactants is less than theenergy of the product C. the energy of the reactants is equal to theenergy of the product D. there is no relationship between the energy ofthe reactants and the energy of the product

What is the relationship between the energies of the reactantsand those of the products in an exothermic reaction?


18Marks:1

Chooseoneanswer.

A. endothermic B. exothermic C. endogonic D. freezing

A substance was burned to determine its energy content, thiswas found to be 300kJ mol-1, at the end of the reaction it wasdetermined that the products have an energy content of 150kJmol. Identify the type of reaction?

Incorrect

Marks for this submission: 0/1.

19Marks:1

Chooseoneanswer.

A. energy content of reactants B. energy contents of products C. activation energy D. change in enthalpy

What does E, in the diagram represent?


20Marks:1

Chooseoneanswer.

A. no change B. purple to colourless C. brown to colourless D. orange to green

What would be the colour change observed if polluted aircontaining sulphur dioxide was passed through acidifiedpotassium dichromate.


21Marks:1

Chooseoneanswer.

A. calcium hydroxide B. calcium sulphate C. hydrochloric acid D. water

Ammonia gas is produced when solid ammonium sulphate isheated with?


22Marks:Which of the following changes is an example of reduction?

1

Chooseoneanswer.

A. chloride ions to chlorine molecules B. hydrogen molecules to hydrogen cations C. nitrogen molecules to ammonia molecules D. iron ( II ) ions to iron ( III ) ions

Conversion of


23Marks:1

Chooseoneanswer.

A. zinc B. aluminium C. calcium D. copper

Which of the following metals will react most readily with dilutehydrochloric acid to form hydrogen?


24Marks:1 Choose

oneanswer.

A. compounds of carbon except oxides of carbon,metal carbides and carbonates B. compounds consisting of carbon, hydrogen andoxygen only C. compounds consisting of carbon and hydrogenonly D. Compounds of carbon including oxides ofcarbon, metal carbides and carbonates

Organic compounds can be defined as;


25Marks:1 Choose

oneanswer.

A. characteristic colour B. Reactivity C. Chemical properties D. physical properties

Functional groups gives an organic compound its?


26Marks:1

The general formulae for members of alkanes series;

a. CnH2n

Chooseoneanswer.

A. a B. b C. c D. d

b. CnH2n+2

c. CnH2n-2

d. CnH2n+1


27Marks:1 Choose

oneanswer.

A. organic compounds with same molecularformulae but with different structural formulae B. organic compounds with same molecularformulae and same molecular mass C. organic compounds with different physicalproperties D. organic compounds with same chemicalproperties but different structures

Isomerism can be defined as


28Marks:1 Choose

oneanswer.

A. bleach B. baking soda C. vinegar D. table salt

A common household example of an alkanoic acid is


29Marks:1

Chooseoneanswer.

A. Alcohol, alkane, alkene B. Alcohol, alkane, alkanoic acid C. Alkanoic acid, alcohol, alkane D. Alkene, alcohol, alkanoic acid

To which homologous series do the following compounds belong


30Marks:1

Chooseoneanswer.

A. a B. b C. c D. d

What volume of carbon dioxide is formed when 44g of methane isburnt completely in oxygen at stp [1 mole of gas = 22.4dm3]

CH4(g) +2O2(g) → CO2(g) + 2H2O(g)

a. 616 cm3

b. 61.6 dm3

c. 0.616 dm3

d. 61 dm3


31Marks:1

Chooseoneanswer.

A. contains carbon B. does not release carbon-dioxide on burning C. does not produce oxides of sulphur or nitrogenor soot on burning D. is not volatile

Ethanol is considered a relatively clean fuel; because it ?


32Marks:1

Chooseoneanswer.

A. a B. b C. c D. d

Which equation illustrates the complete combustion of butane ?

a. C4H7 + O2 → 4CO2 + H2O

b. C4H8 + 6O2 → 4CO2 + 4H2O

c. 2C4H10 + 1302 → 8CO2 + 10H2O

d. C4H9 + O2 → CO2 + H2O


33Marks:1

Chooseoneanswer.

A. Lustrous B. Low tensile strengthC. Ductile D. Gas at room temperature and pressure

Which one of the physical properties below does not describe ametal?


34Marks:1

Chooseoneanswer.

A. i and iii B. i, iii and iv C. ii and iii D. ii and iv

Addition polymers are made from:

i] two types of monomer .

ii] one type of monomer.

iii] monomers with a carbon carbon double bond.

iv] monomers with two functional group.


35Marks:1

Chooseoneanswer.

A. Polystyrene B. Polypropene C. Polysaccharides D. Polyethene

Which of the following is an example of a polymer formed bycondensation reactions?


36Marks:1

Which of the following structures can be used to represent partof a molecule of a compound formed by addition polymerization?

Chooseoneanswer.

A. a B. b C. c D. d


37Marks:1 Choose

oneanswer.

A. starch B. protein C. terylene D. nylon

HOOC – X – COOH and HO – X – OH are monomers that combine to produce:


38Marks:1

Chooseoneanswer.

A. Zinc, copper, aluminum B. Aluminum, copper, zinc C. Aluminum, zinc, copper D. Zinc, aluminum, copper

When zinc is added to a solution of copper(II) sulphate copper isdeposited. when aluminum is added to a solution of zincchloride, zinc is deposited. What is the order of reactivity frommost reactive to least of the three metals?


39

Marks:1

Chooseoneanswer.

A. a,b & c B. a & b only C. b & c only D. b only

Which of the following group of characteristics are true ofmetals?

a] they form basic oxides.

b] they all conduct electricity.

c] they gain electrons to form cations.


40Marks:1 Choose

oneanswer.

A. Conductor of electricity B. Soluble in water C. Can be used as a lubricant D. High melting point

Which of the following is not a property of graphite?


41Marks:1

Chooseoneanswer.

A. Aluminium B. Iron C. Zinc D. Copper

Which of the following metals is extracted from its oxide byeletrolysis?


42Marks:1

Chooseoneanswer.

a. Electrolysis of water b. Catalytic reduction of hyrogen peroxide c. Fractional distillation of liquid air d. Heating sodium nitrate

By which of the following processes is oxygen normally obtainedindustrially?


43

Marks:1

Chooseoneanswer.

A. a B. b C. c D. d

Which one of the following equations does not represent apossible reaction between iron and sulphur?

a. Fe(s) + 2S(s) → FeS2(s)

b. 2Fe(s) + 3S(s) → Fe2S3(s)

c. Fe(s) + S(s) → FeS(s)

d. Fe(s) +3S(s) → FeS3(s)


44Marks:1

Chooseoneanswer.

A. A B. B C. C D. D

The table below contains information on 4 unknown elements [real symbolsnot used ]Questions 44-46 refers to the following table:

Element Melting Point/0C Formula Of Oxidea] A 650 AOb] G 840 GOc] J 1284 J2O3

d] Z - 34 Z2O2

Which of the elements in the table is most likely a non-metal?


45Marks:1

Chooseoneanswer.

A. A B. B C. C D. D

Which of the elements is most likely a gas at room temperature?


46

Marks:1

Chooseoneanswer.

A. A B. B C. C D. D

The oxide of which element is expected to be acidic?


47Marks:1

Chooseoneanswer.

A. carbon B. oxygen C. nitrogen D. magnesium

Which one of the following elements is not involved inphotosynthesis?


48Marks:1

Chooseoneanswer.

A. sodium and iron B. calcium and sodium C. copper and lead D. magnesium and calcium

The presence of which of the following pairs of cations result inhard water?


49Marks:1

Chooseoneanswer.

a. A b. B c. C d. D

what are the formulae of the compounds formed whenmagnesium reacts with dilute sulphuric acid?

A. MgSO4 and H2

B. Mg2SO4 and H2

C. MgSO4 and H2O

D. MgSO3 and H2

Magnesium react with dilute sulphuric acid to form magnesium

sulphate, a salt and hydrogen. This occurs as magnesium ishigher than hydrogen in the activity series and will displacehydrogen from acids.

Mg(s) + H2SO4(aq) ---> MgSO4(aq) + H2(g)


50Marks:1

Chooseoneanswer.

A. increase the concentration of the aluminiumion B. increase the rate of electrolysis C. lower the temperature at which the processtakes place D. increase the efficiency of the process

In the extraction of aluminum from alumina, the alumina isadded to molten cryolite to


51Marks:1

Chooseoneanswer.

A. Sulphur and phosphorus B. Silicon and sulphur C. Phosphorus and carbon D. Sulphur and carbon

The substance at the top of a match stick that ignites containswhich two non-metal components?


52Marks:1

Chooseoneanswer.

A. it corrodes easily B. it is very dense C. it is expensive D. it is ductile

What is the main disadvantage of using iron as a structuralmaterial?


53Marks:1

Chooseoneanswer.

A. higher tensile strength B. lower density C. corrodes less readily D. more attractive appearance

What is main advantage that aluminum alloys have overaluminium?


54Marks:1

Chooseoneanswer.

A. to soften the aluminium B. to lower the temperature at which purealumina melts C. to react with the aluminium during the process

D. to act as on electrode in the process

Why is cryolite used in the extraction and production ofaluminium?


55Marks:1 Choose

oneanswer.

A. contact process B. haber process C. mildrex process D. osward's process

By what process is sulphuric acid industrially prepared?


56Marks:1

Chooseoneanswer.

A. sodium B. iron C. chlorine D. mercury

The flowing Mercury Cathode Cell is used to manufacture which ofthe following?


57Marks:1

Chooseoneanswer.

A. ammonium and chloride B. ammonium and bromide C. ammonia and chloride

A chemist provides a student with a sample of fertiliser E. Thefollowing tests were done on E, warming E with NaOH gave a gaswhich turned damp red litmus paper blue. Mixing E with acidifiedsilver nitrate gave a white precipitate and titrating E withacidified BaCl2 did not give a white precipitate.

Which ions does fertiliser E contain?

D. ammonia and sulphate


58Marks:1

Chooseoneanswer.

A. yellow-green solid B. colourless liquid C. colourless gas D. yellow - green gas

What are the colour and physical state of chlorine at roomtemperature?

COLOUR STATEyellow-green SolidColourless LiquidColourless GasYellow-Green Gas


59Marks:1

Chooseoneanswer.

A. calcium iodide B. sodium chloride C. copper ( ll ) chloride D. lead ( ll ) bromide

After acidification with dilute nitric acid, a colourless solution ofQ reacts with aqueous silver nitrate to give a white precipitate.

Which compound could Q be?


60Marks:1

Chooseoneanswer.

A. C B. D

Aqueous ammonia is added to a solution of a salt, a whiteprecipitate is formed which dissolves in an excess of aqueousammonia.

Which metal ion could the salt contain?

A. Al3+

B. Ca2+

C. Cn2+

D. Zn2+


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