2004
Credit will be given for strict adherere 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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2004 WAEC SSCE Chemistry Past Questions
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2004
All your burette readings (initial and final), as well as the size of your pipette, must be recorded but no account of experimental procedure is required. All calculations must be done in your answer book. A is a soluti…
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2004
(a) Give the reason in each case why it is necessary to:(i) moisten a piece of litmus paper used in testing for the acidity or alkalinity of a gas.(i) acidify the test solution with dilute hydrochloric acid in the confir…
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2004
(a)(i) Give the reason why copper turnings dissolve in AgNO\(_3\) solution but remain insoluble in Pb(NO\(_3\) )\(_2\) solution.(ii) Copper turnings of mass 1.06g were placed in 250 cm\(^3\) of 0.20 mol dm\(^{-3}\) AgNO\…
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2004
(a)(i) State one physical method and one chemical method in each case by which the following can be removed:I. Permanent hardness in waterII. A suspension of CaCO\(_3\) in water.(ii) Give one disadvantage of hard water.(…
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2004
(a) Methane reacts with chlorine under certain condition to produce tetrachloromethane.(i) State the condition for the reaction(ii) Name the type of reaction(iii) Give two uses of methane(iv) Name one major natural sourc…
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2004
(a) Draw an energy profile diagram to illustrate a catalysed exothermic reaction and label parts of the curves representing the following:(i) activated complex (without catalyst);(ii) activation energy (with catalyst)(ii…
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2004
(i) State Two assumptions of the kinetic theory of gases(ii) When some solids are heated, they change directly into the gaseous state. What name is given to this phenomenon?(iii) List two substances which exhibit the phe…
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2004
(a)(i) Mention two types of bond present in the ammonium ion(ii) Give three characteristic properties of electrovalent compounds(iii) State. two differences between chemical reactions and nuclear reactions(b) Two element…
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2004
Which of the electrons in the following orbitals will experience the greatest nuclear attraction?
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2004
Which of the following properties of elements deceases generally across a period in the Periodic Table?
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2004
Which of the following electron transition results in the emission of energy?
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2004
The mass of an element is 27 and its atomic number is 13. What is the composition of the nucleus of its atom?
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2004
Which of the following equipment is not used to detect radioactivity?
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2004
A metal X forms two chlorides with the formulae XCI2 and XCI3. Where is X in the Periodic Table?What type of bonding exists between X and chlorine in each of the chlorides?
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2004
A metal X forms two chlorides with the formulae XCI2 and XCI3. Where is X in the Periodic Table?
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2004
One of the characteristics of transition metals is
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2004
A nuclide emits a beta-particle (e) in the process, that atomic number
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2004
What volume of hydrogen would be left over when 300cm3 of oxygen and 1000cm of hydrogen are exploded in a sealed tube? [2H2(g) + O2(g) → 2H2 Og]
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2004
Which of the following salts is not prepared by precipitation?
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