Abuja — The West African Examinations Council (WAEC) has postponed the full implementation of the computer-based test (CBT) format for the 2026 Senior School Certificate Examination (SSCE) until 2027, according to a statement released at the council’s 63rd annual meeting in Umuahia, Abia State. Hajia Binta Abdulkadir, Chairman of WAEC’s Nigeria National Committee, explained that the 2026 May/June edition will now serve as a pilot phase — allowing candidates to sit for either the traditional paper-and-pen test or the digital format. She emphasized that no student will be disadvantaged by the transition. The delay follows widespread concern over the readiness of many schools, particularly in rural areas, for full digital exams. Many institutions lack adequate computers, reliable electricity, internet connectivity, and trained personnel—factors WAEC and the Federal Ministry of Education say are essential for a successful rollout. To facilitate the switch, WAEC co...
The analysis requires a good knowledge of the specific reactions of the ions with certain reagents, for example an unknown solution which contains copper ions will give a deep blue solution with excess ammonia solution. Related post Qualitative analysis of copper(II)tetraoxosulphate VI So what we are going do here is to identify these ions using their specific reactions. A mixture of calcium chloride and iron (II) tetraoxosulphate (VI) will undergo a double decomposition reaction to yield calcium tetraoxosulphate (VI) and iron (II) chloride. CaCl 2 (aq) + FeSO 4 (aq) --------- FeCl 2(aq) + CaSO 4(s) Since calcium tetraoxosulphate (VI) is insoluble, iron(II)chloride can easily be filtered off with filter paper or by any other means possible. How to identify the Cations in the mixture Cations are positive charged ions. We have two of these types of ions in the mixture which · Iron (I...