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...
Stoichiometry is the quantitative study of the reactants and products involved in a chemical reaction. Stoichiometry is also the calculation of products and reactants in a chemical reaction. It deals with the number of products and reactants involved in a chemical reaction. Importance of Chemical Stoichiometry It helps chemists to use balanced chemical equations to determine the moles of reactants and products in a chemical reaction. It helps to determine the mass of reactants and products required or present in a chemical reaction. It helps chemists measure the molecular weight of substances. It helps to measure the formulae. Basic Concepts of Stoichiometric Reaction In a stoichiometric reaction, there are some basic things to note to make it easier to understand. We can get the pictures of these things by considering the equation below: 3Fe(S) + 4H2O(I) → Fe3O4(S) + 4H2(g) The stoichiometric coefficient of this chemical reaction ...