The ozone layer is formed due to reactions of :

(1) oxygen and ultraviolet rays

(2) carbon dioxide and layers of the atmosphere

(3) cosmic rays and layers of atmosphere

(4) infrared rays and ultraviolet rays

Which of the following is the lowest atmospheric layer?

(1) Lithosphere

(2) Stratosphere

(3) Troposphere

(4) Hydrosphere

What is the interval between a high tide and neap tides at a given place?

(1) 12 hours

(2) 12 hours 26 minutes

(3) 15 hours 30 minutes

(4) 24 hours

The sea bed sloping gradually and bordering the continent is known as :

(1) Coast

(2) Continental Shelf.

(3) Continental Platform.

(4) Continental Slope.

A special type of well in which water rises automatically under the pressure of a column of water to the ground surface through a hole is known as

(1) Artesian well

(2) Spring

(3) Hot spring

(4) Geyser

Which of the following oceans has the shape of the English alphabet S?

(1) the Arctic Ocean

(2) the Indian Ocean

(3) the Atlantic Ocean

(4) the Pacific Ocean

Which of the following, is a landlocked sea?

(1) Timor Sea

(2) Arafura Sea

(3) Greeland Sea

(4) Aral Sea

A place where there is a constant intermingling of salt water and fresh water is ____

(1) Estuary

(2) Delta

(3) Gulf

(4) Bay

The deepest ocean of the world is

(1) Atlantic Ocean

(2) Arctic Ocean

(3) Indian Ocean

(4) Pacific Ocean

Tides in the sea have stored in them :

(1) Hydraulic energy

(2) Kinetic energy

(3) Gravitational potential energy

(4) A combination of all the above three forms of energy

The deepest surface depression on the earth is

(1) Kurile Trench

(2) Mariana Trench

(3) Tonga-Kermadec Trench

(4) Bentley Subglacial