Metals And Non Metals Mock Tests

Alloys of metals are usually more resistant to corrosion than the pure metals. This is because:

Which of the following is a physical property of metals?

A student adds sodium hydroxide solution to an unknown salt and observes a white precipitate that is insoluble in excess of sodium hydroxide but soluble in ammonium hydroxide forming a deep blue complex. Which metal ion is present in the salt?

In the periodic table, aluminium (Al) has atomic number 13. It belongs to group 13 and period 3. The electronic configuration of aluminium is:

A student adds dilute sulfuric acid to a test tube containing copper metal. No reaction is observed. However, when the same acid is added to zinc granules, bubbles of a gas are formed. The most appropriate conclusion is:

Which gas is released during the reaction of dilute hydrochloric acid with zinc granules?

A student adds sodium hydroxide solution to an unknown salt in a test tube. A reddish-brown precipitate is formed. Which cation is present in the salt?

Which metal is extracted using electrolytic reduction?