Question

15. Why is biogas considered an excellent fuel? (CBSE 2019 Set 31/1/1)

17 How the nuclear energy is generated? Explains the process of production of
electricity from it? Mention major hazards of nuclear energy. (CBSE 2010)

18) Write three advantages and three limitations of solar cooker. (CBSE 2010)

19). Name two semiconductors used in solar cell. What is solar cell panel?​

Answer 1

Explanation:

There are two main types of thin-film PV semiconductors on the market today: cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS). Both materials can be deposited directly onto either the front or back of

Answer 2

refer the attachment