The elements whose oxides can turn litmus solution blue are:

76 The metals which can produce amphoteric oxides are: 77 An element X forms two oxides XO and XO₂. The oxide XO is neutral but XO₂ is acidic in nature. The element X is most likely to be : 79 The elements whose oxides can turn litmus solution red are : 80 Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide :