How many total lines of latitudes are there in the world?

1. 90
2. 91
3. 180
4. 181

Refer to the image and identify the climatic zone of the shaded region.

1. North Frigid Zone
2. North Temperate Zone
3. Torrid Zone
4. South Frigid Zone

What is the full form of IDL?

1. International Diagonal line
2. Internal Detour Line
3. International Date Line
4. Intermediate Diagonal Line

Which of the following meridian is called the Central Meridian of India?

1. 83 1⁄2°W
2. 0°
3. 82 1⁄2°E
4. 72°E