Chemistry Past Questions and Answers

To a solution of an unknown compound, a little dilute tetraoxosulphate (VI) acid was added with some freshly prepared iron (II) tetraoxosulphate (VI) solution. The brown ring observed after the addition of a stream of concentrated tetraoxosulphate (VI) acid confirmed the presence of

Which of the following is used in rocket fuels?

A constituent common to bronze and solder is

When iron is exposed to moist air, it gradually rusts. This is due to the formation of

A compound gives an orange-red colour to non-luminous flame. This compound is likely to contain