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...
How to Analyse the Ions in a Mixture of Copper II tetraoxosulphate VI and Ammonium trioxocarbonate IV
Copper sulphate(copper II tetraoxosulphate VI) is one of the soluble compounds of copper, it is a blue crystal solid with five molecules of water of crystallization. It can lose its water of crystallization on strong heating to form anhydrous salt which is white in colour. For more detailed information on the analysis of copper sulphate, click Here. Ammonium carbonate (ammonium trioxocarbonate IV) is a white crystal solid and it is very soluble in water, Click here for more information. A mixture of ammonium Carbonate and copper sulphate will undergo double decomposition to give ammonium sulphate and copper carbonate. Double decomposition is a type of reaction in which two soluble compounds react by the exchange of radicals to form one soluble compound and one insoluble compound. CuSO 4 + (NH 4 ) 2 CO 3 ------- CuCO 3 + (NH 4 ) 2 SO 4 Copper carbonate is a green powder and insoluble while ammonium sulphate is a whit...