WAEC 2014 CHEMISTRY PRACTICAL ++IN ADDITION TO THE FITTINGS AND REAGENTS NORMALLY CONTAINED IN A CHEMISTRY LABORATORY,THE FOLLOWING APPARATUS AND MATERIALS WILL BE REQUIRED BY EACH CANDIDATES: (A)ONE BURETTE OF 50CM^3 CAPACITY (B)ONE PIPETTE, EITHER 20CM^3 OR 25CM^3. ALL CANDIDATES AT ONE CENTRE MUST USE PIPETTES OF THE SAME VOLUME. THESE SHOULD BE CLEAN AND FREE FROM GREASE. (C)THE USUAL APPARATUS FOR TITRATION; (D)THE USUALLY APPARATUS AND REAGENT FOR QUALITATIVE WORK INCLUDING THE FOLLOWING WITH ALL REAGENTS APPROPRIATELY LABELLED; (I) RED AND BLUE LITMUS PAPER (II) AQUEOUS AMMONIA (III) DILUTE HYDROCHLORIC ACID (IV) DILUTE SODIUM HYDROXIDE SOLUTION (V) BARIUM CHLORIDE SOLUTION (VI) DILUTE TRIOXONITRATE (V) ACID (VII) SILVER TRIOXONITRATE (V) ACID (E) GLASS ROD (F) FILTRATION APPARATUS (G) SPATULA (H) TWO BOILING TUBE (I) FOUR TEST TUBES (J) METHYL ORANGE INDICATOR (K) WASH BOTTLE CONTAINING DISTILLED/ DEIONIZED WATER WAEC 2014 PHYSICS SPECIMEN ==================== QUESTION 1 -A SMOOTH SOLID SPHERICAL OBJECT E.G PENDULUM BOB WITHOUT HOOK,A MARBLE,BALL-BEARINGS ETC. A GROOVED PLANE 150CM LONG (OR A PLANK 150CM LONG AND 10CM WIDE GUIDED AT BOTH SIDES BY A TIE-ROD) ==================== A SHORT WOODEN PLANK (50M-70M) TO INCLINE TO PLANE, STOP WATCH/CLOCK, ==================== METER RULE, ==================== -PILE OF PAPER TOWELS/SERVIETTES ==================== QUESTION 2 -A RAY BOX WITH A CIRCULAR HOLE OF ABOUT 3CM WITH CROSS WIRES, ==================== CONVERGING LENS OF FOCAL LENGTH 15CM TO 20CM -LENS HOLDER, ==================== -SCREEN, ==================== -METER RULE, ==================== -PLASTICINE TO GUIDE THE LENS ON THE HOLDER, ==================== -FLAT PLANK TO RAISE THE RAY BOX WHEN NECESSARY ==================== QUESTION 3 -POTENTIOMETER (0-100CM) ==================== -10 OHMS STANDARD RESISTOR LABELLED R ==================== -THREE 1.5V CELLS CONNECTED IN SERIES IN A RACK, ==================== -JOCKEY, ==================== -KEY, i need 50 comments before i drop CHEMISTRY & AGRIC Question 5 Class interval.Frequency 60 – 64. 2 65 – 69. 3 70 – 74. 6 75 – 79. 11 80 – 84. 8 85 – 89. 7 90 – 94. 2 95 - 99. 1 The table shows the distribution of marks scored by students in an examination. Calculate, correct to 2 decimal places, the (a) mean; (b) standard deviation of the distribution. CORE MATHEMATICS Question 1 (a)Using ruler and a pair of compasses only, construct (i) quadrilateral PQRS such that /PQ/ = 10cm, /QR/ = 8cm, /PS/ = 6cm, ÐPQR = 60º and ÐQPS = 75º; (ii) the locus L1 of points equidistant from QR and RS; (iii) locus L2 of points equidistant from R and S. (b) Measure /RS/ Question 2 Using ruler and a pair of compasses only, construct a triangle ABC such that /AB/ = 7.1cm, /AC/ = 7cm and
Posted on: Wed, 02 Apr 2014 06:30:55 +0000
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