1. The state with the largest coal reserves in India is Jharkhand.

2. Coal reserves in India are mainly located in the older Gondwana formations of peninsular India and the younger Tertiary formations of the north-eastern region.

3. About 80 per cent of the coal reserves in India are bituminous type and belong to the non-coal category.

Mahanadi, Godavari, Krishna and Kaveri drain in the Bay of Bengal whereas Narmada drains in the Arabian Sea.

A sea cliff refers to a steep rocky coast that rises almost vertically above the seawater. Sea cliffs are typically formed by the erosive action of waves over a long period of time, causing the coastline to retreat inland and leaving behind a vertical or near-vertical rock face. These formations are often found in areas with rugged coastlines and are a result of various geological processes and erosion by the sea. Sea cliffs can be impressive natural landmarks and are often admired for their dramatic and picturesque views.