Question : Galvanisation is the 

Option 1: deposition of zinc on iron

Option 2: deposition of tin on iron

Option 3: deposition of copper on iron

Option 4: deposition of aluminium on iron

Question : What is the process of seeping water into the ground called?

Option 1: Infiltration

Option 2: Filtration

Option 3: Percolation

Option 4: Sedimentation

Question : Galvanisation is a process in which a protective_________ coating is applied to iron to prevent it from rusting.

Option 1: nickel

Option 2: zinc

Option 3: copper

Option 4: silver

Question : Which of the following metals occurs in a free state?

Option 1: Copper

Option 2: Iron

Option 3: Zinc

Option 4: Lead

Question : The atmospheric layer reflecting radio waves is called

Option 1: ozonosphere

Option 2: ionosphere

Option 3: stratosphere

Option 4: mesosphere