Secondary>Science>>Chemistry>>>JAMB 2018
Ethene and ethane have the same
Ethene and ethane have the same A. chemical properties B. density C. number of carbo…
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Secondary>Science>>Chemistry>>>JAMB 1990
Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic mass of 35.5. The relative abundance of the isotope of mass number 37 is?
Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic m…
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Secondary>Science>>Chemistry>>>NECO2001
The gas produced are
The gas produced are A. Ammonia and water gas B. Coal gas and ammonia C. Coal…
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Secondary>Science>>Chemistry>>>NECO2001
The alkanol below is
The alkanol below is A. a dihydric alkanol B. an oxidizing alkanol C. a prima…
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Secondary>Science>>Chemistry>>>NECO2001
Animal charcoal differs from wood charcoal in that it
Animal charcoal differs from wood charcoal in that it A. has a dark colour. B.…
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Secondary>Science>>Chemistry>>>NECO2001
Producer gas is a mixture of
Producer gas is a mixture of A. ammonia and nitrogen B. carbon (IV) oxide and…
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Secondary>Science>>Chemistry>>>NECO2001
Which gas does NOT decolourize bromine water?
Which gas does NOT decolourize bromine water? A. C2H2, B. C2H4, C. C2H6, D. C3…
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Secondary>Science>>Chemistry>>>NECO2001
The following reactions are connected with the extraction of iron or its properties
The following reactions are connected with the extraction of iron or its prope…
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Secondary>Science>>Chemistry>>>NECO2001
On exposure to hydrogen sulphide, moist lead (II) ethanoate paper turns
On exposure to hydrogen sulphide, moist lead (II) ethanoate paper turns A. bl…
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Secondary>Science>>Chemistry>>>NECO2001
What does the following equation illustrate?
What does the following equation illustrate? 235 92 U→234 92 Th + 4 2 He A. ar…
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Secondary>Science>>Chemistry>>>NECO2001
When an electric current is passed through a solution containing dilute tetraoxosulphate(VI) acid, 190 cm3 of hydrogen gas is evolved. If the measurements were made at
When an electric current is passed through a solution containing dilute tetrao…
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Secondary>Science>>Chemistry>>>NECO2001
The experiment shown is for
The experiment shown is for A. investigating the effects of sunlight on coloure…
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Secondary>Science>>Chemistry>>>NECO2001
How much sodium hydroxide is required to make 250 cm² of a 0.1 molar solution?
How much sodium hydroxide is required to make 250 cm² of a 0.1 molar solution?…
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Secondary>Science>>Chemistry>>>NECO2001
The IUPAC name for
A. benzenol. B. benzophenol. C. hydroxyphenol. D. 2-hydroxybenzene. E. phenol…
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Secondary>Science>>Chemistry>>>NECO2001
Detergents are better than soaps for washing in hard water because
Detergents are better than soaps for washing in hard water because A. hard wat…
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Secondary>Science>>Chemistry>>>NECO2001
Which method is NOT used to determine the rate of a reaction?
Which method is NOT used to determine the rate of a reaction? A. change in amo…
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Secondary>Science>>Chemistry>>>NECO2001
An experiment to test the conductance of 0.1 M solutions of the substances listed below was performed.
An experiment to test the conductance of 0.1 M solutions of the substances lis…
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Secondary>Science>>Chemistry>>>NECO2001
The oxidation number of X in XO43- is
The oxidation number of X in XO 4 3- is A. +1 B. +2 C. +3 D. +4 E. +5 The cor…
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Secondary>Science>>Chemistry>>>NECO2001
In the diagram above, X and Y are known as
In the diagram above, X and Y are known as A. conductors. B. carbon. C. insul…
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Secondary>Science>>Chemistry>>>NECO2001
Fructose and glucose are
Fructose and glucose are A. allotropes of each other. B. both disaccharides. C…
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Secondary>Science>>Chemistry>>>NECO2001
A measure of the degree of disorderliness in a chemical system is known as the
A measure of the degree of disorderliness in a chemical system is known as the…
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Secondary>Science>>Chemistry>>>NECO2001
The green colour solution of an Fe2+ salt changes to a brown solution of an Fe3+ salt by
The green colour solution of an Fe2+ salt changes to a brown solution of an Fe…
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Secondary>Science>>Chemistry>>>NECO2001
The minimum amount of energy required for a chemical reaction to occur is known as the
The minimum amount of energy required for a chemical reaction to occur is know…
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Secondary>Science>>Chemistry>>>NECO2001
The diagram below is an energy profile diagram of the reaction R + S →T+U.
The diagram below is an energy profile diagram of the reaction R + S →T+U. The…
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Secondary>Science>>Chemistry>>>NECO2001
What is the ratio of the rate of diffusion of carbon(IV) oxide to that of propane, under the same conditions?
What is the ratio of the rate of diffusion of carbon(IV) oxide to that of prop…
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Secondary>Science>>Chemistry>>>NECO2001
The Kinetic theory can NOT be used to
The Kinetic theory can NOT be used to explain A. allotropy. B. Brownian moveme…
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Secondary>Science>>Chemistry>>>NECO2001
Which element contains the greatest number of moles?
Which element contains the greatest number of moles? A. 8g of Helium B. 48 g o…
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Secondary>Science>>Chemistry>>>NECO2001
The high boiling point of hydrogen fluoride can be explained in terms of
The high boiling point of hydrogen fluoride can be explained in terms of A. co…
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Secondary>Science>>Chemistry>>>NECO2001
The position of an element in the Periodic Table is determined by
The position of an element in the Periodic Table is determined by A. its atomi…
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Secondary>Science>>Chemistry>>>NECO2001
A gas X diffused through a porous partition the rate of 3 cm per second. Under the same condition hydrogen diffused at the rate of 15 cm' per second. What is the relative molecular mass of X.
A gas X diffused through a porous partition the rate of 3 cm per second. Under…
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Secondary>Science>>Chemistry>>>NECO2001
Which metal reacts with steam when it is red-hot?
Which metal reacts with steam when it is red-hot? A. gold B. iron C. copper D.…
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Secondary>Science>>Chemistry>>>NECO2001
Which is NOT a property of metals?
Which is NOT a property of metals? A. ductile B. malleable C. conduct heat and…
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Secondary>Science>>Chemistry>>>NECO2001
An element M with an electronic configuration of 1S2 2S2 2P6 3S2 3P6 4S2 3D6 has oxidation states of
An element M with an electronic configuration of 1S2 2S2 2P6 3S2 3P6 4S2 3D6 h…
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Secondary>Science>>Chemistry>>>NECO2001
Which compound is a component of baking powder?
Which compound is a component of baking powder? A. Na2CO3 B. Na2SO4 C. KHCO3 D…
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Secondary>Science>>Chemistry>>>NECO2001
The decreasing order of the oxidizing power of the halogens is
The decreasing order of the oxidizing power of the halogens is A. Br > I &g…
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Secondary>Science>>Chemistry>>>NECO2001
An atom with the electronic configuration, 1S2 2S2 2P6 3S2 3p6 4s2 3d6 is that of a/an
An atom with the electronic configuration, 1S2 2S2 2P6 3S2 3p6 4s2 3d6 is that…
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Secondary>Science>>Chemistry>>>WAEC1988
Name two allotropes of carbon.
Name two allotropes of carbon. Tips: The solution to this question may be amb…
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Secondary>Science>>Chemistry>>>WAEC1988
Name two products of the destructive distillation of coal and state one use of each.
Name two products of the destructive distillation of coal and state one use of…
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Secondary>Science>>Chemistry>>>WAEC1988
Give one example of. (i) heavy chemicals, (ii) fine chemicals
Give one example of. (i) heavy chemicals, (ii) fine chemicals Solution: (i) Exa…
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Secondary>Science>>Chemistry>>>WAEC1988
Write the structural formulae and the names of compounds having the formula C2H4Cl2.
Write the structural formulae and the names of compounds having the formula C2…
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Secondary>Science>>Chemistry>>>WAEC1988
Arrange the following in their correct order of increasing energy: alpha particles, gamma rays and beta particles.
Arrange the following in their correct order of increasing energy: alpha parti…
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Secondary>Science>>Chemistry>>>WAEC1988
State one difference between nuclear fission and nuclear fusion.
State one difference between nuclear fission and nuclear fusion. Solution: N…
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Secondary>Science>>Chemistry>>>WAEC1988
50 cm3 of sulphur (IV) oxide were produced at s.t.p. when some quantity of powder sulphur were burnt in excess oxygen. (a) Write the equation for the reaction (b) Calculate the volume of oxygen used up during the reaction (c) Which of the gas laws is applicable? State the law.
50 cm3 of sulphur (IV) oxide were produced at s.t.p. when some quantity of pow…
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Secondary>Science>>Chemistry>>>WAEC1988
Write the ionic equation for the reaction between zinc powder and silver trioxonitrate (V) solution. (b) Which substance in (a) above is (i) oxidized, (ii) reduced? (c) State two applications of oxidation numbers.
Write the ionic equation for the reaction between zinc powder and silver trio…
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Secondary>Science>>Chemistry>>>WAEC1988
What is a carbohydrate? (b) Name two types of carbohydrates and give one example of each type.
What is a carbohydrate? (b) Name two types of carbohydrates and give one examp…
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Secondary>Science>>Chemistry>>>WAEC1988
Name the major raw materials used in the manufacture of the following: (i) polythene (ii) margarine (iii) cement
Name the major raw materials used in the manufacture of the following: (i) pol…
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Secondary>Science>>Chemistry>>>WAEC1988
Distinguish between cracking and reforming. Of what importance are the two processes in the petroleum industry?
Distinguish between cracking and reforming. Of what importance are the two pro…
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Secondary>Science>>Chemistry>>>WAEC1988
State Gay-Lussac's law and illustrate the law with one chemical reaction.
State Gay-Lussac's law and illustrate the law with one chemical reaction. …
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Secondary>Science>>Chemistry>>>WAEC1988
Explain with equation where appropriate, the functions of the following substances in the Solvay process: (i) limestone (ii) ammonia (iii) brine
Explain with equation where appropriate, the functions of the following substa…
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Secondary>Science>>Chemistry>>>WAEC1988
Explain why transition metals (i) have high melting points, (ii) have variable oxidation states, (iii) exhibit paramagnetism.
Explain why transition metals (i) have high melting points, (ii) have variable…
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Secondary>Science>>Chemistry>>>WAEC1988
Write the structural formula of: (i) 2,2,4-trimethylpentane
Write the structural formula of: (i) 2,2,4-trimethylpentane (ii) ethylmethanoa…
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Secondary>Science>>Chemistry>>>WAEC1988
An element, X is represented as 4020X.
An element, X is represented as 40 20 X. (i) How many electrons and how man…
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Secondary>Science>>Chemistry>>>NECO2001
The maximum number of electrons that can occupy the shell having a principal quantum number 3 is
39. The maximum number of electrons that can occupy the shell having a principa…
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Secondary>Science>>Chemistry>>>NECO2001
A student performed a series of solubility experiments using potassium trioxonitrate (V) as solute, and water as solvent. The results obtained were: Which sketch would she obtain on plotting her results?
A student performed a series of solubility experiments using potassium trioxon…
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Secondary>Science>>Chemistry>>>JAMB 2018
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