Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
Question: Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
[A].
CaO
MnO2
ZnO
FeS
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.