2015
All your burette readings (initials and final) as well as the size of your pipette must be recorded but no account experimental procedure is required. All calculations must be done in your answer booklet.A is 0.100 mol d…
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2015 WAEC SSCE Chemistry Past Questions
2015
Credit will be given for strict adherence to the instructions, for observations precisely recorded and for accurate inferences. All tests, observations, and inferences must be clearly entered in your answer book, in ink,…
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2015
(a) Consider the following diagram.(i) Give the name of the experiment.(ii) What does the experiment demonstrate?(iii) Name one gas that could be used in place of HCl gas.(iv) What colour could be observed in the flask d…
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2015
(a) Define electrochemical cell.(b) Aluminium can be prepared commercially by the application of electrolysis. Name the: I. electrolyte used in the process; II. ore from which the electrolyte is obtained; III. electrodes…
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2015
(a)(i) Name two gases that could be used to perform the fountain experiment.(ii) State the physical property which makes the gases suitable for the experiment in (a)(i)(b)(i) Define each of the following terms: I. solubi…
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2015
(a)(i) Give three characteristics of homologous series.(ii) Name two groups of compounds which form such a series.(b) A saturated organic compound A containing two carbon atoms reacted with ethanoic acid in the presence…
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2015
(a) Consider the following table; (i) Which of the elements:ElementAtomic NumberMass NumberJ919Q1327R1632X1939Y2452I. is a halogen?II. is most likely to be attracted by a magnet?III. belongs to group I?IV. would readily…
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2015
(a) Define esterification.(b) State two properties of plastic.(c) Name the components of duralumin.(d) What is meant by each of the following terms?(i) Raw material.(ii) Primary product.(e) State Charles' law.(f) List fo…
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2015
The negatively charged particle in an atom is the
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2015
A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion?
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2015
The shape of a molecule of water is _______?
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2015
The compound formed between 14X and 16Y is _______?
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2015
The Van der waals' forces are dominant intermolecular forces in_______?
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2015
How many orbits are contained in an atom with atomic number 13?
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2015
The gas given off when ethanol reacts with sodium is
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2015
The following transition metal ions would be coloured in aqueous solution except________?
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2015
Which of the following pairs of compounds belongs to the same homologous series?
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2015
Which of the following pairs of elements forms amphoteric oxides?
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2015
The shape of a graphite crystal is
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2015
To which group and period respectively does an element with 15 electrons belong?
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