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

Which of the following statements related to lines of latitude is not correct?

1. They are called parallels of Latitude.
2. They are used to determine time.
3. They are important to determine climate.
4. Equator is the largest line of latitude.

Meridian means

1. Midnight
2. Midday
3. Morning
4. Dusk