Conventional energy resources consist of

1. petroleum
2. tidal energy
3. biofuel
4. wind energy

Petroleum is

1. non-inflammable liquid
2. natural fossil fuel
3. renewable form of energy resource
4. none of the above

Hydel power is a

1. renewable resource
2. non-renewable resource
3. exhaustible resource
4. very expensive

Multipurpose projects were installed by Pandit Jawaharlal Nehru to

1. supply water to cities and for power generation
2. for navigation
3. for economic development
4. to avoid silting in the river