decomposition of rocks, leaving a residual mass of weathered material?
of the following minerals?
which of the following rocks?
minerals which contain iron are called ferrous minerals, e.g. iron ore, manganese,
nickel, cobalt, etc.
minerals which do not contain iron are called non-ferrous minerals,
e.g. copper, bauxite tin, etc.
Conventional Sources of Energy:-Conventional sources
of energy are those sources which have been
use since the early times. Non-conventional
Sources of Energy:-Non- conventional sources of energy have generally been identified in the
with a definable interior structure.
minerals are forced upwards into the cracks. They then solidify and
form veins or lodes.
Compared to the present rate of
consumption, the replenishment rate of minerals is
very slow. Hence, mineral resources are finite
and non- renewable. Due to this, it is
important that we conserve mineral resources.
ages, namely Gondwana, a little over
200 million years in age and in tertiary deposits which are only about 55 million
The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal- Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits. Tertiary coals occur in the northeastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. Jharkhand is the largest producer where Jharia, Bokaro, Karampur, Palamu are the major coalfields. In West Bengal, Raniganj, Jalpaiguri and Darjeeling are the coalfields. Sarguja, Bilaspur, Raigarh and Bastar districts are coal fields found in Chhatisgarh. MP. has coal fields in Chinaware district and in Maharashtra.
of the country receive bright monsoon period.
water heating, space heating, crop drying, etc.