List of top Science Questions on Sources of Energy

Which one of the following is a clean energy source?
The device which directly converts solar energy into electricity is:
Which of the following gases is used in welding?
Which of the following causes acid rain in industrial areas?
What should be the minimum speed of wind in a wind electric generator?
The upper part of a box-type solar cooker has a glass cover. The reason for this is:
Which is used in Solar cells?
Which is the conventional source of energy?
The maximum number of electrons in a shell is:
Which energy does a hydro-electric power plant convert into electric energy?
What is nuclear fission?
What is the source of energy of the Sun?
Which is the main source of energy on earth?
The device which directly converts solar energy into electricity is known as:
The actual source of energy of fossil fuel is:
Those which 'produce heat on combustion' are called:
Euro-II is related to:
Which of the following is a non-renewable source of energy?