A. Sodium
B. Potassium
C. Both sodium & potassium
D. Aluminium or calcium
A. Styrene
B. Phenol
C. Phthalic anhydride
D. None of these
A. Can be repeatedly melted
B. Is useful for melt casting
C. Cannot be melted after forming
D. Is useful for sning
A. Pyrex
B. Soda lime
C. Lead
D. High silica
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
A. Make it corrosion resistant
B. Make glossy surface
C. Give elasticity & prevent cracking of the film
D. Increase atmospheric oxidation