Which one of the following four metals would be displaced from the solution of its salt by the other three metals?

Compare the Chemical Properties of Metals and Non metals in tabular form.

An element is soft and can be cut easily with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. This element is most likely to be:

Sulphur element is said to be:

An element Z reacts with water to form a solution which turns phenolphthalein indicator pink. The element X is most likely to be: