1.

      Which among the following statements are the requirements of good source of energy? A. It should do a large amount of work per unit volume or mass.                                    B. It should be easily accessible.                 C. It should be easy to store and transport.         D. It should be economical.                     

A. A, B            
B.        A, B, C               
C. B, C, D                 
D.        All of these generator.   
Answer» E.


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