Which one of the following constitutes about 65% of the total electricity generated in India?
Solar energy
Wind energy
Hydroelectric power
Thermal power
The statements I and II are explanatory notes.I.Multipurpose projects are built over the rivers to prevent soil erosion and floods.II. Hirakud and Rihand are built in India Which option decribes better about the above statements?
Canal
Dams
Tanks
Reservoirs
A hard,black and compact coal is:
Anthracite
Lignite
Bituminous
Sederite
Which one of the following may occur in association with petroleum?
Copper
Tin
Natural gas
The minerals deposited in the form of layers in the rocks are called:
sand dunes
mountains
beds
rock soil
Which is used for both lubricants and fuel oils?
Asphalt base oil
Paraffin base oil
Mixed base oil
Linseed oil
Which one of the following does not ignite easily but once ignited it gives out great heat?
Gold and Silver are found as ores in:
sedimentary rocks
clay rocks
igneous rocks
metamorphic rocks
Where does mineral fuel find?
Sedimentary rocks
Metamorphic rocks
Igneous rocks
None of these
The largest producer of bauxite in the world is:
South America
North America
Australia
Africa
