positive rays produces flashes on which plate
Correct answer: D. ZnS
- A. MgO
- B. CuO
- C. Al2O3
- D. ZnS
Explanation
MgO is not commonly used as phosphor materials for producing flashes upon electron impact. CuO is not commonly used as phosphor materials for producing flashes upon electron impact. Al2O3 is not commonly used as phosphor materials for producing flashes upon electron impact. Positive rays produce flashes on the phosphor plate coated with ZnS (zinc sulfide).
Last updated
About Discovery of the Proton
The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
According to Millikan's oil drop experiment, the charge on an oil droplet is:
Alpha (α) particles are helium (He) nucleus with a charge of __________ ?
Alpha particles can be detected by using___________?
Angle of deflection was studied by________________?