A. iron(ii)Sulphide
B. tin(ii)sulphide
C. Zinc Sulphide
D. lead(iv) Sulphide
Correct Answer:
Option C – Zinc Sulphide
Explanation
ZnS (Zinc Sulfide) screen was used because it emits a flash of light when struck by an alpha particle.
This is a phenomenon called Radio luminescence in which a flash of light is observed on the screen when acted upon by a radioactive substance.