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CHEM SALT

Total questions: 70

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

Which of the following salts is prepared by precipitation method?

a)

Sodium chloride

b)

Barium sulphate

c)

Calcium nitrate

d)

Ammonium carbonate

2.

How would you prepare a sample of potassium chloride safely in the laboratory?

a)

Add excess potassium metal to dilute hydrochloric acid

b)

Titrate dilute HCI with aqueous KOH with an indicator

c)

Titrate dilute HCI with aqueous KOH once with indicator, then again without

d)

Mix aqueous potassium nitrate with aqueous sodium chloride

3.

Which of the following methods is used to prepare zinc sulfate?

a)

Add excess zinc chloride to aqueous sodium sulfate

b)

Tiltrate dilute H2SO4 with aqueous Zn(OH)2 with an indicator, then again without

c)

Add excess solid zinc oxide to dilute sulfuric acid

d)

Mix aqueous zinc nitrate with aqueous potassium sulfate

4.

After titrated aqueous NaOH with dilute HCI without indicator, what is your next step to obtain a sample of crystal of NaCI salt?

a)

Filtration

b)

Evaporation to dryness

c)

Repeat the titration

d)

Evaporate to saturated solution, filter the mixture then dry the residue

5.

After adding aqueous Ca(NO3)2 to dilute Na2SO4, what is my next step to prepare a sample of CaSO4?

a)

Crystallisation

b)

Evaporation to dryness

c)

Filtration to get the filtrate

d)

Filtration to get the residue

6.

Which of the following can be prepared by titration?

a)

Magnesium sulfate

b)

Zinc carbonate

c)

Lead (II) sulfate

d)

Lithium chloride

7.

Why is solid calcium hydroxide added in excess to dilute nitric acid when preparing calcium nitrate salt?

a)

To ensure all calcium hydroxide is used up

b)

To speed up the reaction

c)

To ensure all dilute nitric acid is completely react with calcium hydroxide

d)

To have maximum yield of calcium nitrate

8.

Which method of preparation of a pure salt solution requires the use of a pipette and burette?

a)

BaCI2 + Na2SO4 --> BaSO4 + 2NaCI

b)

CuO + HCI --> CuCI2 + H2O

c)

NaOH + HCi --> NaCI + H2O

d)

MgCO3 + H2SO4 --> MgSO4 + H2O + CO2

9.

Which pair of reagents can be used to prepare copper(II) sulphate salt?

a)

Copper metal with dilute sulphuric acid

b)

Copper(II) nitrate with sodium sulphate

c)

Copper(II) chloride and dilute sulphuric acid

d)

Copper(II) carbonate with dilute sulphuric acid

10.

Which two solutions, when mixed together, will form a precipitate?

a)

Sodium hydrochloric acid and barium nitrate

b)

Sulphuric acid and sodium hydroxide

c)

Potassium chloride and lead (II) nitrate

d)

Dilute nitric acid and zinc chloride

11.

Calcium carbonate reacts with nitric acid to form?

a)

Calcium oxide & Carbon dioxide

b)

Calcium nitrate & Carbon dioxide

c)

Calcium chloride & Carbon dioxide

d)

Calcium sulphate & Carbon dioxide

12.

Acid react with reactive metal to form

a)

Salt+ Carbon dioxide

b)

Salt + Hydrogen

c)

Salt + Water

d)

Salt + Metal oxide

13.

What is name of process when an acid react with a base to form a salt and water

a)

Neutralization

b)

Acidification

c)

Precipitation

d)

Ionic Reaction

14.

Name the salts produced which is made of when reacted with hydrochloric acid

a)

Chlorides Salt

b)

Sulphates Salt

c)

Nitrates Salt

d)

Carbonates Salt

15.

Which of the following statements below is the best definition of salt

a)

Salt is formed when metal reacts with an alkali.

b)

Salt contains sodium ions and chloride ions.

c)

Salt is formed from a weak Van der Waals’ forces of attraction.

d)

Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions.

16.

Which of the following are the physical characteristics of salt crystal?


I They have similar size.

II They have fixed angle.

III They have fixed geometrical shapes.

IV They have flat surface, straight edges and sharp angles.

a)

I, II and III

b)

I, II and IV

c)

I, III and IV

d)

II, III and IV

17.

What are the products if magnesium reacts with hydrochloric acid?

a)

Magnesium chloride + Hydrogen

b)

Magnesium sulphate + Hydrogen

c)

Magnesium oxide + Hydrogen

d)

Magnesium sulphide + Hydrogen

18.

Which of the following preparation of CuSO4 salt is incorrect?

a)

Acid + copper(II) oxide

b)

Acid + copper(II) hydroxide

c)

Acid + copper(II) carbonate

d)

Acid + copper metal

19.

Which of the following is not a use of a salt as a food preservative?

a)

ammonium sulphate, (NH4)2SO4 to preserve fruit jam

b)

common salt, NaCl to prepare salted fish

c)

sodium benzoate, C6H5COONa to preserve sauces

d)

sodium nitrite, NaNO2 to preserve sausages

20.

Salt X soluble in water produced blue in colour when dissolved in water , indicate that cation presence is ...

a)

Iron(lll) ion

b)

Iron(ll) ion

c)

Copper(ll) ion

d)

Zinc ion

21.

Salt Y soluble in water and then produced brown in colour solution. The cation maybe presence in salt Y is ...

a)

Copper(ll) ion

b)

Iron(ll) ion

c)

Iron(lll) ion

d)

Ammonium ion

22.

Salt crystal of solid X is green in colour.

Which of the following salt are possibilities of salt X?

a)

Iron(lll) chloride

b)

Iron(ll) sulphate

c)

Copper(ll) carbonate

d)

Copper(ll) chloride

23.

Salt crystal A has green in colour and insoluble in water.

What is salt A?

a)

Copper(ll) chloride

b)

Copper(ll) carbonate

c)

Iron(ll) carbonate

d)

Iron(ll) sulphate

24.

Green solid salt A dissolved in water produce green colour solution.

Salt A could be

a)

Copper(ll) carbonate

b)

Iron(ll) nitrate

c)

Copper(ll) chloride

25.

Green colour of salt A dissolves in water produce blue colour solution.

a)

Copper(ll) chloride

b)

Copper(ll) sulphate

c)

Copper(ll) nitrate

d)

Copper(ll) carbonate

26.

Which of the following salts powder is white colour.

a)

Ammonium nitrate

b)

Iron(lll) chloride

c)

Iron(ll) nitrate

d)

Lead(ll) oxide

27.

Yellow in colour when hot and white in colour when cold. Verify the cation presence in the salt.

a)

Lead(ll) oxide

b)

Zinc oxide

c)

Iron(lll) oxide

d)

Iron(ll) oxide

28.

Which of the following is white solid and dissolves in water?

a)

Sodium carbonate

b)

Barium sulphate

c)

Calcium sulphate

d)

Magnesium carbonate

29.

Identify the colour of Iron(lll) salts

a)

Green

b)

Brown

c)

Blue

d)

Black

30.

Copper(ll) carbonate has...colour

a)

Blue

b)

Green

c)

Black

31.

Barium sulphate is ...salt

a)

Soluble

b)

Insoluble

32.

Which of the following is insoluble salt

a)

Ammonium carbonate

b)

Magnesium sulphate

c)

Lead(ll) chloride

d)

Zinc nitrate

33.

Solid copper(ll) chloride has..colour

a)

Blue

b)

Green

34.

Copper(ll) chloride dissolves in water produce...solution

a)

Green

b)

Blue

35.

Salt is

a)

Organic compound

b)

Ionic compound

c)

Covalent compoound

36.

Which of the following is not a method to produce salt?

a)

Neutralisation

b)

Reaction between acid and reactive metal

c)

Reaction between acid and aqueous ammonia

d)

Reaction between metal and metal

37.

Which of the following salt is use in field of medicine?

a)

Sodium chloride

b)

Calcium sulphate

c)

Sodium nitrate

d)

Argentum bromide

38.

Which of the following is soluble salt?

a)

Magnesium carbonate

b)

Sodium nitrate

c)

Silver chloride

d)

Barium sulphate

39.

Which of the following is insoluble salt?

a)

Sodium carbonate

b)

Ammonium sulphate

c)

Lead(II) chloride

d)

Potassium nitrate

40.

Which of the following group of salt is all soluble?

a)

Carbonate salt

b)

Chloride salt

c)

Sulphate salt

d)

Nitrate salt

41.

Which salt are soluble in hot water to form colourless solution and then formed white solid again when is cooled?

a)

Lead(II) chloride

b)

Lead(II) iodide

c)

Silver chloride

d)

Sodium sulphate

42.

Which of the following is not the method to produce soluble salt?

a)

Neutralisation

b)

Reaction between acid and reactive metal

c)

Distillation

d)

Reaction between acid and metal oxide

43.

What is the name of reaction used to prepare insoluble salt?

(a)  

44.

How to prepare insoluble salt?

a)

Neutralisation between acid and alkali

b)

Mixing two soluble salt solution

c)

Reaction of acid with metal oxide

d)

Reaction of acid and reactive metal

45.

Which of the following pairs will produce insoluble salt?

a)

Sodium carbonate + Lead(II) sulphate

b)

Argentum chloride + Barium sulphate

c)

Copper(II) sulphate + Sodium carbonate

d)

Ammonium nitrate + Calcium

46.

What is the purpose of recrystallisation method?

a)

To obtain dried salt crystal

b)

To produce more salt crystal

c)

To make sure the salt crystal shining

d)

To remove impurities

47.

After heating salt crystal X, a gas produced and lime water turns to cloudy. What is the gas given off of the salt X.

a)

Carbon dioxide gas

b)

Oxygen gas

c)

Hydrogen gas

d)

Chlorine gas

48.

Salt Y is heated and rekindles the glowing wooden splinter. The residue is formed is brown when hot and yellow when cold. What is metal oxide is formed in salt Y?

a)

Lead(II) oxide

b)

Zinc oxide

c)

Sodium oxide

d)

Copper(II) oxide

49.

Salt A is heated and produce white residue and rekindles the glowing wooden splinter. besides that, salt A also produce brown gas in colour. Identify the anion present in salt A?

a)

Carbonates ion

b)

Chlorides ions

c)

Sulphates ion

d)

Nitrates ion

50.

Which of the following salt is not decompose when heated?

a)

Potassium carbonate

b)

Iron(II) sulphate

c)

Zinc sulphate

d)

Ammonium chloride

51.

In an experiment, the gas C produced can change moist red litmus paper into blue. What is the gas C ?

a)

Hydrogen gas

b)

Ammonia gas

c)

Hydrogen chloride gas

d)

Nitrogen dioxide gas

52.

What is the colour of copper(II) carbonate ?

a)

Blue

b)

Green

c)

Black

d)

Yellow

53.

Which of the following salts powder is yellow in colour.

a)

Lead(ll) iodide

b)

Iron(lll) chloride

c)

Iron(ll) nitrate

d)

Lead(ll) oxide

54.

What is the main purpose of rinse / wash the salt crystal with distilled water in the recrystallisation method?

a)

To have dried salt crystal

b)

To produce more salt crystal

c)

To make sure the salt crystal shining

d)

To remove impurities

55.

A metal carbonate release carbon dioxide when heated. The residue is yellow colour when hot and white when cold. What is the metal carbonate stated?

a)

Zinc carbonate

b)

Copper (II) carbonate

c)

Calcium carbonate

d)

Lead (II) carbonate

56.

Substance P produces brown colour gas when heated. When potassium iodide solution is added into aqueous solution P, a yellow precipitate is formed and soluble in hot water. Which of the following is substance P?

a)

Zinc carbonate

b)

Magnesium nitrate

c)

Lead (II) nitrate

d)

Lead (II) carbonate

57.

Shows the observation from the experiment carried out of solution Q.


Test 1:

Sodium hydroxide, NaOH solution is added slowly until in excess.


Observation:

White precipitate is formed and dissolved in excess sodium hydroxide solution.

Test 2:

Ammonia solution is added slowly until in excess.


Observation:

White precipitate is formed and soluble in excess ammonia gas.


From the observation, state the cation can be found in solution Q.

a)

Mg2+

b)

Zn2+

c)

Pb2+

d)

Al3+

58.

When a small amount of aqueous ammonia solution is added to copper (II) sulphate solution, blue precipitate is formed. What will happen to the blue precipitate when excess aqueous ammonia solution is added?

a)

Insoluble in the excess of aqueous ammonia solution

b)

Dissolved in the excess of aqueous ammonia solution and blue solution is formed

c)

Insoluble in the aqueous ammonia solution and turns into black precipitate

d)

Soluble in the excess of aqueous ammonia solution and produced colourless solution.

59.

Which of the following is not the product when solid zinc nitrate is heated?

a)

Zinc metal is formed

b)

White powder is formed

c)

A brownish gas is released

d)

A gas which ignite the glowing splinter released

60.

Which of the following ions will form precipitates that do not dissolve in excess aqueous ammonia?


I Copper(II) ions

II Aluminium ions

III Lead(II) ions

IV Zinc ions

a)

I and IV only

b)

II and III only

c)

I, II and III only

d)

II, III and IV only

61.

Lead(II) iodide is formed when aqueous lead(II) nitrate is added to a solution containing iodide ions. What type of reaction takes place?

a)

Neutralization

b)

Oxidation

c)

Reduction

d)

Precipitation

62.

Which of the following ions form a white precipitate that dissolves in excess sodium hydroxide solution?

I Al3+

II Mg2+

III Pb2+

IV Zn2+

a)

I and II

b)

II and IV

c)

I, II and III only

d)

I, III and IV only

63.

Which substances forms yellow precipitate when added to Lead(II) nitrate solution

a)

Sodium chloride

b)

Sodium carbonate

c)

Potassium iodide

d)

Potassium sulphate

64.

Brown in colour when hot and yellow in colour when cold. Verify the cation presence in the salt.

a)

Lead(ll) oxide

b)

Zinc oxide

c)

Iron(lll) oxide

d)

Iron(ll) oxide

65.

The reagent barium nitrate solution is used to test for

a)

Chloride ions

b)

Iodide ions

c)

Nitrate ions

d)

Sulphate ions

66.

Which of the following statement is the true definition of salt ?

a)

Salt is a chemical substance that formed when hydrogen ion in the acid is substituted with metal ion or ammonium ion.

b)

Salt is a chemical substance that formed when metal ion react with non-metal ion

c)

Salt is a chemical substance that consist of sodium ion and chloride ion

d)

Chemical substance those taste salty.

67.

Which of the following is the most suitable reaction to prepare a sample of pure copper (II) carbonate ?

a)

Reaction between carbonic acid and copper

b)

Reaction between carbonic acid and copper(II) hydroxide

c)

Reaction between copper(II) hydroxide and lead(II) carbonate

d)

Reaction between copper(II) nitrate solution and sodium carbonate.

68.

Which of the following method is a correct mixture to prepare an aqueous zinc nitrate?

I. Zinc carbonate and dilute nitric acid

II. Zinc oxide and sodium nitrate solution

III. Zinc oxide and nitric acid

IV. Zinc and Magnesium nitrate solution

a)

IV only

b)

I and III only

c)

II and IV only

d)

I, III and IV only

69.

Which of the following substance produce magnesium sulphate when dilute sulphuric acid is added?


I. Magnesium powder

II. Magnesium hydroxide

III. Magnesium carbonate

IV. Magnesium nitrate

a)

I, III

b)

II and IV

c)

I, II, III

d)

I, II, III and IV

70.

Which of the following soluble salt is/are true?


I. All kind of sodium, potassium and ammonium salts

II. All nitrates salts

III. All sulphates salt except silver sulphate

IV. All chlorides salt except lead (II) chloride and barium chloride

a)

I,II

b)

II,III

c)

I,II and III

d)

II,III and IV

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