Which of the following is not used as a nuclear fuel cladding material?

مندرجہ ذیل میں سے کون سا جوہری ایندھن کی کلڈنگ مواد کے طور پر استعمال نہیں ہوتا ہے؟

Iron

Cadmium

Ceramics

None of these

Nuclear fuel cladding materials should have low neutron absorption and high melting points.

Cadmium has a high neutron absorption cross-section, making it unsuitable for cladding.