Metals and no metals

When sodium reacts with water it produces ___________

• hydrogen

• carbon dioxide

The solution of ash magnesium ribbon is-------in nature.

• acidic

• neutral

• basic

• none of these

When an object changes shape when struck by a hammer.

• luster
• malleable
• brittleness
• ductile

Examples of metals.

• Gold

• Silver

• Aluminium

• All of the these

Boron is

• Metal

• Metalloid

• Non-metal

• None of these

calcium is more reactive than iron. What will be produced when calcium sulphate and iron are mixed together?

• no reaction happens so the reactants stay the same

• calcium and iron sulphate

• iron sulphate and hydrogen

• water and iron sulphate

  HIDE ANSWER

In chemistry, a displacement reaction is where

• a more reactive metal displaces a less reactive metal from its compound

• two reactive metals join together to form an alloy

• a less reactive metal displaces a more reactive metal from its compound

• a more reactive metal is removed from its compound by a less reactive metal

The most reactive metal is

• iron

• copper

• silver

• zinc

Zn, Fe, Al and Mg. When we arrange these elements in the ascending order of their

reactivity series we get

• Mg < Al < Zn < Fe

• Al < Mg < Fe < Zn

• Zn < Al < Mg < Fe

• Fe < Zn < Al < Mg