97°25'E
Explanation
India is located entirely in the Northern and Eastern hemispheres. The mainland of India extends between latitudes 8°4'N and 37°6'N and longitudes 68°7'E and 97°25'E.
Analysis of Options:
- 68°7'E 68°7'E: This represents the westernmost longitude of India, passing through the Ghuar Moti region in Gujarat.
- 82°30'E 82°30'E: This is the Standard Meridian of India, based on which the Indian Standard Time (IST) is calculated. It passes through Mirzapur (Uttar Pradesh).
- 97°25'E 97°25'E: This represents the easternmost longitude of India, located in Kibithu, Arunachal Pradesh.
- 37°6'N 37°6'N: This represents the northernmost latitude of India (Indira Col in Ladakh).
Key Takeaway:
India's longitudinal extent is approximately 30 degrees, spanning from 68°7'E in the west to 97°25'E in the east.