Which layer of the earth's atmosphere contains the ozone layer?

• Troposphere

• Mesosphere

• Ionosphere

• Ionosphere

What is the popular name of Monolithic rock shrines at Mahabalipuram?

• Rathas

• Prasadas

• Mathika

• Mathika

What is the name of the device used to convert alternating current into direct current?

• Ammeter

• Galvanometer

• Rectifier

• Rectifier

Why does ice covered in sawdust not melt quickly?

• Sawdust does not allow the air to touch the ice

• The water is absorbed by sawdust

• Sawdust is a bad conductor of heat

• Sawdust is a bad conductor of heat

Where is the Great Barrier Reef located?

• Pacific Ocean

• Indian Ocean

• Atlantic Ocean

• Atlantic Ocean