Which one of the following is not a non conventional source of energy?

Where is the origin of river Indus river? 

Which is the largest port in India? 

Which one of the following lakes in India has the highest water salinity?

The position of the earth in its orbit, when it is at its greatest distance from the Sun causing summer in the Northern hemisphere is 

Which of the following is known as red planet?

Where was the first Cotton Mill in India established? 

Which is the smallest planet in the Solar system?