- Which one of the following ores is a valuable ore of copper?
A. Malachite
B. Siderite
C. Haematite
D. Dolomite- .
- .
- .
- .
- Which one of the following salts is used in water purification?
A. Ammonium nitrate
B. Magnesium carbonate
C. Iron (III) sulphate
D. Potassium chloride.- .
- .
- .
- .
- Which one the following substances oxidizes iron (II) sulphate in aqueous solution?
A. Chlorine
B. Hydrogen
C. Ammonia
D. Nitrogen- .
- .
- .
- .
- Which one of the following statements about graphite is false?
A. It has a layer structure
B. It refracts light rays strongly
C. It is an excellent lubricant in oil.
D. It has a high density.- .
- .
- .
- .
- A steel tank is protected from rusting when it is connected to a metal, M as shown.
Which one of the following metals is Not likely to be M?
A. Aluminium
B. Zinc
C. Magnesium
D. Copper.- .
- .
- .
- .
- Which one of the following statements about sodium hydrogen carbonate is correct?
A. It decomposes to carbon dioxide and hydrogen
B. It reacts with acids to yield carbon dioxide
C. Its solution turns milky in carbon dioxide
D. It does not exist in solid form.- .
- .
- .
- .
- .
- .
- .
- .
- Which one of the following ions reacts with CT (aq) to form a precipitate, which dissolves on heating?
- .
- .
- .
- .
- A colourless solution reacts with dilute hydrochloric acid to give a white precipitate. The white precipitate dissolves in warm water. The colourless solution is
A. zinc chloride
B. lead nitrate
C. magnesium sulphate
D. sodium carbonate.- .
- .
- .
- .
- .
- .
- .
- .
- .
- .
- .
- .
- Fractional crystallization can be used to separate a mixture in solution. The substances in the mixture must have.
A. A large difference in freezing points.
B. Very low boiling points.
C. A hygroscopic property
D. Very high molecular masses.- .
- .
- .
- .
- The amount of heat evolved when 6.0g of metal, M was displaced from a solution was 28.8kJ. The amount of heat produced when 1 mole of M was displaced is (Mr = 36)
- .
- .
- .
- .
- The rate of reaction between zinc and hydrochloric acid can be increased by
- .
- .
- .
- .
- Sulphur dioxide is used in the following ways except in the
A. Bleaching of materials such as wool and silk.
B. Treating of wood pulp when manufacturing paper.
C. Large scale production of sulphuric acid
D. Manufacture of vulcanized rubber.- .
- .
- .
- .
- Which one of the following oxides has the most ionic structure?
- .
- .
- .
- .
- Which one of the following processes is not used to remove hardness in water?
A. treatment with sodium carbonate
B. addition of calcium hydroxide
C. distillation of water
D. addition of sodium stearate.- .
- .
- .
- .
- Which one of these salts is least soluble in water?
- .
- .
- .
- .
- .
- .
- .
- Which of the following will occur when aluminium is added to an aqueous solution of silver nitrate?
A. Heat will be absorbed
B. Aluminum hydroxide will be formed
C. Silver will precipitate out.
D. Aluminium will form an alloy with silver.- .
- .
- .
- .
- Which gas evolves during the fermentation of glucose solution?
A. Ammonia
B. Nitrogen dioxide
C. Carbon dioxide
D. Methane- .
- .
- .
- .
- Which one of the following salts is the most soluble in water with
increasing temperature?
A. Potassium nitrate
B. Sodium chloride
C. Sodium nitrate
D. Potassium chloride.- .
- .
- .
- .
- Ordinary cement is produced by roasting the following mixtures of
substances
A. limestone and clay
B. sodium carbonate and slaked lime
C. calcium chloride and chalk
D. clay and graphite.- .
- .
- .
- .
- Which one of the following reactions proceeds fast under ordinary conditions?
A. Iron and water
B. Copper(II) oxide and hydrogen
C. Magnesium and chlorine
D. Zinc carbonate and nitric acid- .
- .
- .
- .
- The mass of silver nitrate, AgNO3 in 0.2M solution of the salt is
A. 17.0
B. 34.0
C. 85.0
D. 170.0- .
- .
- .
- .
- .
- .
- .
- .
- Which one of the following oxides is a mixed oxide?
- .
- .
- .
- .
- When an electric current is passed through molten magnesium chloride, the
A. Chloride ions will travel to the anode.
B. Magnesium ions will gain electron from the current.
C. Magnesium chloride will glow brightly.
D. Magnesium chloride will conduct the current and sublime.- .
- .
- .
- .
- Which one of the following processes adds sulphur dioxide into the atmosphere?
A. Turning coal and oil
B. Decaying organic matter
C. Heating limestone in a kiln.
D. Fractional distillation of liquid air.- .
- .
- .
- .
- .
- .
- .
- .
- Which of the following pairs of gases do Not cause atmospheric pollution?
A. Sulphur dioxide and carbon dioxide
B. Helium and hydrogen
C. Nitrogen dioxide and sulphur trioxide
D. Carbon monoxide and carbon dioxide- .
- .
- .
- .
- Zinc displaces copper from an aqueous solution of copper (II) sulphate according lo the equation:
The mass of copper in g that is displaced by 13.10g of zinc is (Cu = 63.5)
A. 6.35
B. 12.72
C. 19.07
D. 25.82- .
- .
- .
- .
- Which of the following gases is used to extract iron from its ore?
A. Chlorine
B. Nitrogen monoxide
C. Carbon monoxide
D. Sulphur trioxide.- .
- .
- .
- .
- A white powder is made of 24 percent carbon and 76 percent fluorine atoms. Us simplest formula is
A. CF2
B. C2F4
C. CF3
D. CF4- .
- .
- .
- .
- The mass in g of OH" ions in 0.25M NaOH solution is (H = I, O= 16).
17 17 4
36. The minimum volume of IM HCl (aq) required to produce 0.25g of hydrogen with excess magnesium is
A. 25cm3
B.100cm3
C.250cm3
D.1000cm3
37. The separation of substances that make up ink by chromatography depends on the
A. Solubilities of the substances in a solvent
B. Size of the chromatography paper.
C. Freezing points of the substances
D. Osmotic pressure of the solution of ink.
38. Which one of the following statements about the reaction between iron and sulphur is false? The reaction.
A. Is an oxidation - reduction one
B. Produces iron (II) sulphate
C. Proceeds with evolution of heat
D. Is induced by heat.
39. When ammonium nitrate is heated, it produces
A. nitrogen dioxide
B. ammonia
C. dinitrogen oxide
D. nitrogen monoxide.
40. The reaction of iron and chlorine.
A. occurs al ordinary temperature
B. requires platinum catalyst
C. produces iron(II) chloride
D. produces iron (III) chloride,
ASSERTION - REASON QUESTIONS
Each of the questions 31 to 36 consists of an assertion (statement) on the left-hand side and a reason on the right-hand side
Select:
A. if both the assertion and the reason are true statements and the reason is a correct explanation of the assertion.
B. if both the assertion and the reason are true statements but the reason is not a correct explanation of the assertion.
C. if the assertion is true but the reason is not a correct statement.
D. if the assertion is not correct but the reason is a correct statement.
INSTRUCTIONS SUMMARISED:
Assertion Reason
A. True
B. True
C. True
D. Incorrect True (Reason is a correct explanation)
True (Reason is not a correct explanation)
Incorrect
Correct
41. In the electrolysis of dilute sulphuric acid, OH- (aq) is discharged in preference to SO43-(aq) because SO42-(aq) ion carries more charge than OH-(aq) ion
42. Copper reacts with concentrated nitric acid to produce nitrogen monoxide because Copper is above hydrogen in the electrochemical series
43. Aluminium dissolves readily in aqueous sodium hydroxide solution because aluminium is a highly electropositive metal.
44. Monoclinic sulphur is stable only at a temperature above 960C because its atoms are arranged in a layer structure.
45. Magnesium has oxidation number of +2 because magnesium lacks six electrons to complete the octet structure.
MULTIPLE COMPLETION QUESTIONS
In each of the questions 39 to 50, one or more of the answers given mat’ be correct. Read each question carefully and then indicate the correct answer according to the following:
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 only is correct.
46. When potassium chlorate is heated with manganese dioxide, it decomposes to give.
1. oxygen
2. chlorine
3. potassium chloride
4. manganese chloride.
47. Which of these gases in the atmosphere make(s) rain water acidic?
1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen dioxide
4. Nitrogen monoxide
48. Which of the following substances can provide hydrogen ions in aqueous solution?
1. NH4OH
2. CH3COOH
3. CH3CH2OH
4. H2CO3
49. Nitric acid shows the following property or properties
1. Turns litmus blue.
2. Forms salts with bases.
3. Is a powerful reducing agent.
4. Produces carbon dioxide with carbonates.
50. When chlorine is dissolved in cold aqueous solution of sodium hydroxide it produces
1. Sodium chlorate (V)
2. Sodium chloride.
3. Sodium hydrogen chloride
4. Sodium chlorate (IV)- .
- .
- .
- .
- The minimum volume of IM HCl (aq) required to produce 0.25g of hydrogen with excess magnesium is
37. The separation of substances that make up ink by chromatography depends on the
A. Solubilities of the substances in a solvent
B. Size of the chromatography paper.
C. Freezing points of the substances
D. Osmotic pressure of the solution of ink.
38. Which one of the following statements about the reaction between iron and sulphur is false? The reaction.
A. Is an oxidation - reduction one
B. Produces iron (II) sulphate
C. Proceeds with evolution of heat
D. Is induced by heat.
39. When ammonium nitrate is heated, it produces
A. nitrogen dioxide
B. ammonia
C. dinitrogen oxide
D. nitrogen monoxide.
40. The reaction of iron and chlorine.
A. occurs al ordinary temperature
B. requires platinum catalyst
C. produces iron(II) chloride
D. produces iron (III) chloride,
ASSERTION - REASON QUESTIONS
Each of the questions 31 to 36 consists of an assertion (statement) on the left-hand side and a reason on the right-hand side
Select:
A. if both the assertion and the reason are true statements and the reason is a correct explanation of the assertion.
B. if both the assertion and the reason are true statements but the reason is not a correct explanation of the assertion.
C. if the assertion is true but the reason is not a correct statement.
D. if the assertion is not correct but the reason is a correct statement.
INSTRUCTIONS SUMMARISED:
Assertion Reason
A. True
B. True
C. True
D. Incorrect True (Reason is a correct explanation)
True (Reason is not a correct explanation)
Incorrect
Correct
41. In the electrolysis of dilute sulphuric acid, OH- (aq) is discharged in preference to SO43-(aq) because SO42-(aq) ion carries more charge than OH-(aq) ion
42. Copper reacts with concentrated nitric acid to produce nitrogen monoxide because Copper is above hydrogen in the electrochemical series
43. Aluminium dissolves readily in aqueous sodium hydroxide solution because aluminium is a highly electropositive metal.
44. Monoclinic sulphur is stable only at a temperature above 960C because its atoms are arranged in a layer structure.
45. Magnesium has oxidation number of +2 because magnesium lacks six electrons to complete the octet structure.
MULTIPLE COMPLETION QUESTIONS
In each of the questions 39 to 50, one or more of the answers given mat’ be correct. Read each question carefully and then indicate the correct answer according to the following:
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 only is correct.
46. When potassium chlorate is heated with manganese dioxide, it decomposes to give.
1. oxygen
2. chlorine
3. potassium chloride
4. manganese chloride.
47. Which of these gases in the atmosphere make(s) rain water acidic?
1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen dioxide
4. Nitrogen monoxide
48. Which of the following substances can provide hydrogen ions in aqueous solution?
1. NH4OH
2. CH3COOH
3. CH3CH2OH
4. H2CO3
49. Nitric acid shows the following property or properties
1. Turns litmus blue.
2. Forms salts with bases.
3. Is a powerful reducing agent.
4. Produces carbon dioxide with carbonates.
50. When chlorine is dissolved in cold aqueous solution of sodium hydroxide it produces
1. Sodium chlorate (V)
2. Sodium chloride.
3. Sodium hydrogen chloride
4. Sodium chlorate (IV)- .
- .
- .
- .
- The separation of substances that make up ink by chromatography depends on the
A. Solubilities of the substances in a solvent
B. Size of the chromatography paper.
C. Freezing points of the substances
D. Osmotic pressure of the solution of ink.- .
- .
- .
- .
- Which one of the following statements about the reaction between iron and sulphur is false? The reaction.
A. Is an oxidation - reduction one
B. Produces iron (II) sulphate
C. Proceeds with evolution of heat
D. Is induced by heat.- .
- .
- .
- .
- When ammonium nitrate is heated, it produces
A. nitrogen dioxide
B. ammonia
C. dinitrogen oxide
D. nitrogen monoxide.- .
- .
- .
- .
- The reaction of iron and chlorine.
A. occurs al ordinary temperature
B. requires platinum catalyst
C. produces iron(II) chloride
D. produces iron (III) chloride,
- .
- .
- .
- .
- ASSERTION - REASON QUESTIONS
Each of the questions 41 to 46 consists of an assertion (statement) on the left-hand side and a reason on the right-hand side
Select:
A. if both the assertion and the reason are true statements and the reason is a correct explanation of the assertion.
B. if both the assertion and the reason are true statements but the reason is not a correct explanation of the assertion.
C. if the assertion is true but the reason is not a correct statement.
D. if the assertion is not correct but the reason is a correct statement.
41.- .
- .
- .
- .
- Copper reacts with concentrated nitric acid to produce nitrogen monoxide because Copper is above hydrogen in the electrochemical series
- .
- .
- .
- .
- Aluminium dissolves readily in aqueous sodium hydroxide solution because aluminium is a highly electropositive metal.
- .
- .
- .
- .
- Monoclinic sulphur is stable only at a temperature above 960C because its atoms are arranged in a layer structure.
- .
- .
- .
- .
- Magnesium has oxidation number of +2 because magnesium lacks six electrons to complete the octet structure.
MULTIPLE COMPLETION QUESTIONS
In each of the questions 39 to 50, one or more of the answers given mat’ be correct. Read each question carefully and then indicate the correct answer according to the following:
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 only is correct.
46. When potassium chlorate is heated with manganese dioxide, it decomposes to give.
1. oxygen
2. chlorine
3. potassium chloride
4. manganese chloride.
47. Which of these gases in the atmosphere make(s) rain water acidic?
1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen dioxide
4. Nitrogen monoxide
48. Which of the following substances can provide hydrogen ions in aqueous solution?
1. NH4OH
2. CH3COOH
3. CH3CH2OH
4. H2CO3
49. Nitric acid shows the following property or properties
1. Turns litmus blue.
2. Forms salts with bases.
3. Is a powerful reducing agent.
4. Produces carbon dioxide with carbonates.
50. When chlorine is dissolved in cold aqueous solution of sodium hydroxide it produces
1. Sodium chlorate (V)
2. Sodium chloride.
3. Sodium hydrogen chloride
4. Sodium chlorate (IV)- .
- .
- .
- .
- When potassium chlorate is heated with manganese dioxide, it decomposes to give.
1. oxygen
2. chlorine
3. potassium chloride
4. manganese chloride.- .
- .
- .
- .
- Which of these gases in the atmosphere make(s) rain water acidic?
1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen dioxide
4. Nitrogen monoxide- .
- .
- .
- .
- Which of the following substances can provide hydrogen ions in aqueous solution?
- .
- .
- .
- .
- Nitric acid shows the following property or properties
1. Turns litmus blue.
2. Forms salts with bases.
3. Is a powerful reducing agent.
4. Produces carbon dioxide with carbonates.- .
- .
- .
- When chlorine is dissolved in cold aqueous solution of sodium hydroxide it produces
1. Sodium chlorate (V)
2. Sodium chloride.
3. Sodium hydrogen chloride
4. Sodium chlorate (IV)- .
- .
- .
- .