Answers The effect of chlorofluorocarbon is The effect of chlorofluorocarbon is A. reduction of oxygen concentration in the atmosphere B. depletion of the ozone layer C. screening of ultra violet rays D. increase in carbon dioxide concentration Correct Answer: Option B Explanation
Answers Fill the gap with the most appropriate option from the list following the gap. Sa’adatu… Fill the gap with the most appropriate option from the list following the gap. Sa’adatu as well as… Read More
Answers The Lyttleton Constitution is often remarkable for all the following reasons except The Lyttleton Constitution is often remarkable for all the following reasons except A. the introduction of a federal… Read More
Answers What is the solution of the equation x2 – x – 1 + 0? What is the solution of the equation x2 – x – 1 + 0? A. x = 1.6… Read More
Answers When an order cheque is endorsed it becomes? When an order cheque is endorsed it becomes? A. a bearer cheque B. a certified cheque C. an… Read More
Answers Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) From the equation above, the mass of magnesium… Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) From the equation above, the mass of magnesium required to react… Read More