Metals and Non-metals (FIB Test - Set 3)

11)   Some metal oxides which react with both acids as well as bases to produce salts and water are known as ______ oxides.

12)   Most metal oxides are insoluble in water but some of these dissolve in water to form ______.

13)   Metals such as ______ and sodium react so vigorously that they catch fire if kept in the open.

14)   Nitric acid is a strong ______ agent.

15)   ______ metal is most reactive in the relative reactivities of metals.