by Sunday | Dec 27 | Chemistry WAEC
A. Marble chips and 2.0 mol dm−3 HCl(aq) B. Marble chips and 2.5 mol dm−3 HCl(aq) C. Powdered marble and 2.5 mol dm−3 HCl(aq) D. Powdered marble and 2.0 mol dm−3 HCl(aq) Correct Answer: Option C – Powdered marble and 2.5 mol dm−3 HCl(aq) Explanation Powdered...
by Sunday | Dec 27 | Chemistry WAEC
A. acidified K2Cr2O7 solution colourless B. acidified KMnO4 solution colourless C. Fe(NO3)2 solution green D. Pb(NO3)2 paper black Correct Answer: Option B – acidified KMnO4 solution colourless Explanation If the potassium manganate(VII) solution is acidified...
by Sunday | Dec 27 | Chemistry WAEC
CH3CHCH3CHClCHCH3CH2CH3 A. 2, 4 – dimethyl – 3 – chlorohexane B. 3, 5 – dimethyl – 4 – chlorohexane C. 4 – chloro – 3, 5 – dirnethylhexane D. 3 – chloro – 2, 4 – dimethylhexane Correct...
by Sunday | Dec 27 | Chemistry WAEC
A. a weak acid B. a reducing agent. C. an oxidizing agent D. a strong acid. Correct Answer: Option C – an oxidizing agent Explanation HOCl is unstable and decomposes to release oxygen which oxidizes the dye to form a colourless...
by Sunday | Dec 27 | Chemistry WAEC
A. 12C B. 120C C. 360C D. 720C Correct Answer: Option D – 720C Explanation Q =It t = 60 * 60=3600 I = 0.20 Q=0.20 * 3600 Q= 720C
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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