2000
All your burette readings (initial and final), as well as the size of your pipette, must be recorded but on no account of experimental procedure is required. All calculations must be done in your answer book.A is solutio…
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2000 WAEC SSCE Chemistry Past Questions
2000
Credit will be given for strict adherence to instructions, for observations precisely recorded and for accurate inferences. All tests observations and inferences must be clearly entered in your answer book. in ink, at th…
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2000
(a) Name one laboratory equipment used for(i) keeping salts dry:(ii) converting vapour to liquid during distillation(ii) bubbling a gas into a liquid(b) (i) What technique would you use to purity a sample of sodium chlor…
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2000
(a) State how you would carry out the following procedures in the laboratory:(i) Remove the sediment in sample of water;(ii) Soften temporarily hard water without heating it,(iii) Obtain pure water frdm muddy water;(iv)…
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2000
(a)(i) Give the names of two allotropes of sulphur.(ii) State and explain what is observed when hydrogen sulphide is bubbled through acidified potassium tetraoxomanganatc (VII) solution(iii) List one product of the react…
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2000
(a) What is meant by each of the following terms?:(i) Esterification(ii) Saponification(b)(i) Give the general moluecular 1 formula of alkynes(ii) Write the molecular formula and empirical formula of ethylethanoate.(iii)…
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2000
(a)(i) List two properties of iron that are characteristic of transition metals(ii) Using equations only, show the processes involved in the extraction of iron and the removal of impurities in the blast furnace.(iii) The…
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2000
a)(i) State Graham's law of diffusion.(ii) Calculate the vapour density of a triatomic gas X if its relative: atomic mass is 16.(iii) Equal volumes of gases Y and Z are maintained at the same temperature and pressure. If…
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2000
(a)(i) List three properties of elements which increase generally across a period in the Periodic Table,(ii) Give two differences between a chemical reaction and a nuclear reaction.(b) Use the information provided in the…
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2000
What mass of copper will be deposited by the liberation of Cu2+ when 0.1F of electricity flows through an aqueous solution of a copper (ll) salt? [Cu = 64]
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2000
Electrovalent compounds are characterized by
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2000
Chlorine atom forms CI by
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2000
The atoms of four elements are represented as 20Q, 16R, 10S and 8T Which of the elements would be unreactive?
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2000
A radioactive solid is best stored
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2000
Which of the following non-metals reacts most readily with metals?
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2000
Elactrostatic force of attraction between sodium ion and halide ion is greatest in
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2000
Which of the following contains co-ordinate covalent bond?
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2000
The type of chemical bond that exists between potassium and oxygen in potassium oxide is
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2000
Which of the following gases is colourless, odourless and soluble in potassium hydroxide solution?
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2000
9.60 g of a gas X occupies the same volume at 0.30 g of hydrogen under the same conditions. Calculate the molar mass of X [H = 1]
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