The ‘Pacific Ring of Fire’ is associated with

(1) oil well fires

(2) thermal power station

(3) volcanoes and earthquakes

(4) forest fires

Which one of the following rivers forms an estuary ?

(1) Ganga

(2) Tapti

(3) Godavari

(4) Mahanadi

How much of the Earth's land surface is desert ?

(1) 1/10th

(2) 1/5th

(3) 1/3rd

(3) 1/6th

What percentage of the world’s freshwater is stored as glacial ice?

(1) 50%

(2) 10%

(3) 70%

(4) 30%

The approximate circumference of the Earth is

(1) 13,000 km

(2) 20,000 km

(3) 25,000 km

(4) 30,000 km

Desertification can be checked by

(1) plugging gullies

(2) checking over-grazing

(3) contour ploughing

(4) forming shelterbelts

In an iceberg floating in the sea, out of 10 parts of its mass, how much will remain above the surface of the water?

1) 1 part

(2) 2 parts

(3) 4 parts

(4) 6 parts

A day is added when one crosses

(1) the equator from south to north

(2) 180-degree longitude from east to west

(3) the equator from north to south

(4) 180-degree longitude from west to east

When does the moon come between the Sun and earth?

(1) Lunar eclipse

(2) Solar eclipse

(3) Sidereal day

(4) Full moon day

The latitude of a place is expressed by its angular distance in relation to—

(1) the Equator

(2) the South Pole

(3) Axis of the Earth

(4) the North Pole

Hanging Valley is very common in

(1) high mountains

(2) sub-Arctic region

(3) glaciated areas

(4) coastal belt