Chemistry Test paper 14

Which of the following gases dissolves in water to form an acid?
A. Nitrogen.
B. Ethene.
C. Nitrogen dioxide.
D. Carbon monoxide.
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Which one of the following is observed when magnesium burns in air?
A. A bright flame.
B. A white powder.
C. Brown specks
D. Molten beads.
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Which one of the following is not true about an element, M with electronic configuration of 2, 8, 3?
A. It conducts heat and electricity
B. It is a metal
C. It dissolves in dilute acids to give hydrogen.
D. Its valencies are 1, 2 and 3.
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Which one of the following ions is most common in hard water?
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The following methods can produce calcium oxide except
A. burning calcium in air
B. heating calcium carbonate
C. heating calcium hydroxide
D. action of water on hydroxide
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Which one of the following metals reacts with cold dilute nitric acid?
A. Calcium
B. Copper
C. Silver
D. Lead
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Which one of the following solutions is used to test for sulphate ions in acid conditions?
A. Barium nitrate
B. Magnesium chloride
C. Silver nitrate
D. Silver chloride.
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The components of ink can be separated by
A. distillation
B. chromatography
C. filtration
D. electrolysis
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Which one of the following substances is used as catalyst in the manufacture of nitric acid?
A. Vanadium (V) oxide
B. Manganese (IV) oxide
C. Platinised asbestos
D. Finely divided iron.
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When 1g of methane I was burnt in excess air, 22.6kJ of heat were liberated. What is the quantity of heat in kJ liberated when 1 mole of methanol was burnt under similar conditions?
A. 22,6
B. 32.0
C. 723.2
D. 777.8
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Which one of the following salts docs not decompose on heating?
A. Sodium carbonate
B. Lead nitrate
C. Calcium carbonate
D. Zinc nitrate.
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Which one of the following substances decolourises bromine water?
A. Ammonia
B. Ethene
C. Methane
D. Chlorine
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Which of the following metals does not displace iron from a solution of iron (II) nitrate?
A. Zinc
B. Copper
C. Magnesium
D. Aluminium
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Which one of the following substances conducts electricity?
A. Iodine
B. Graphite
C. Methyl benzene
D. Tetrachloromethane.
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Which one of the following gases can reduce copper (II) oxide?
A. Nitrogen
B. Hydrogen
C. Nitrogen dioxide
D. Carbon dioxide
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The volume of carbon dioxide evolved when 6.0g of carbon are burnt completely in air at s.t.p is
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Which ore of the following pairs of elements can form an ionic bond?
A. Hydrogen and oxygen
B. Potassium and bromine
C. Copper and zinc
D. Hydrogen and chlorine.
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An alloy solder consists of
A. Zinc and lead
B. Copper and lead
C. Copper and aluminium
D. Tin and lead.
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The formula of the compound formed between elements Q and L is [Q= 12, L=15]
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Which one of the following ions reacts with ammonia to form a precipitate, which dissolves in excess ammonia to form a colourless solution?
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Which one of the following is a synthetic fibre?
A. Wool
B. Cotton
C. Sisal
D. Nylon
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Which one of the following is Not produced during the fermentation of sugar solution?
A. Water vapour
B. Carbondioxide
C.Methane
D. Heat
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Which one of the following salts can be prepared by precipitation?
A. Ammonium nitrate
B. Silver chloride
C. Sodium carbonate
D. Zinc sulphate.
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In which of the following processes does ethene form a plastic?
A. Polymerisation
B. Precipitation
C. Neutralization
D. Electrolysis
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A compound contains 53.3% oxygen, 6.7% hydrogen and 40% carbon. The simplest formula of the compound is
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An oxide of P contains 50% by mass of P. Its relative molecular mass is 64. What is the formula of the oxide?
( P = 32, O = 1 6)
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Which one of the following hydroxides is normally used in the laboratory to prepare ammonia from ammonium chloride?
A. Sodium hydroxide
B. Calcium hydroxide
C. Copper(II) hydroxide.
D. Iron (II) hydroxide.
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Which one of the following gases diffuses fastest? (C = 12, O= 16, N= 14, H = I, Cl = 35.5)
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Which one of the following gases forms white fumes with ammonia?

A. Chlorine
B. Carbon dioxide
C. Sulphur dioxide
D. Hydrogen chloride
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Chlorine dissolves in cold aqueous solution of sodium hydroxide to produce the following substance.

A. Sodium chlorate
B. Sodium chloride
C. Sodium chlorite
D. Sodium hydrogen chloride.
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Which one of the following is Not a property of carbon dioxide?
A. It is slightly soluble in water
B. It forms a precipitate with lime water
C. It extinguishes burning magnesium ribbon
D. It sublimes when solid.
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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. A mixture of ammonium Chloride and sodium chloride can be separated by sublimation because the salt have a common anion.
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Methane burns in air to form carbon dioxide and water because it contains carbon and hydrogen atoms.
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Concentrated sulphuric acid is used to prepare hydrogen chloride acid from sodium chloride because sulphuric acid is stronger than Hydrochloric
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Hydrochloric acid reacts with provides a Magnesium ribbon faster than Magnesium powder because magnesium powder greater surface area of contact.
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Aluminium reacts with heated Iron (Ill) oxide exothermically because it has three electrons in its outermost shell.
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MULTIPLE COMPLETION QUESTIONS
In each of the questions 46 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. The electronic structure of elements P, Q, R and S are as shown in the table below:
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Oxidation is a reaction in which
1. oxygen is removed from a substance.
2. hydrogen is removed from a substance.
3. hydrogen is added to a substance.
4. electron is lost from a substance.
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Which of the following observations take(s) place when copper (II) sulphate is electrolysed using graphite electrodes?
1. Bubbles of a colourlesss gas are formed at the anode
2. a brown coating is formed at the anode
3. the blue colour of copper (II) sulphate fades
4. the anode dissolves in solution.
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Which of the following is / are true about an element with atomic mass 11?
1. it forms ionic oxides
2. it belongs to group (III) of the Period Table.
3. it forms ionic chlorides
4. it is of a mixed - covalent structure.
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Hydrogen bromide in aqueous solution shows the following characteristics:
1. Turns litmus solution red
2. Produces hydrogen with electro-positive metals
3. Liberates carbon dioxide from carbonates.
4. Behaves as a strong oxidizing agent.
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Chemistry Test paper 14

KAWA Chemistry Quiz