MDCAT Chemistry MCQ #730

Unlike cathode rays, the nature of positive rays (canal rays) depends on the gas used in the tube. How are these rays primarily produced?

MDCAT Chemistry MCQ #730

  1. Question 1

    Q1. Unlike cathode rays, the nature of positive rays (canal rays) depends on the gas used in the tube. How are these rays primarily produced?

    • A) Emission from the anode
    • B) Nuclear decay of the gas
    • C) Proton emission from the cathode
    • D) Ionization of residual gas

    Answer: Ionization of residual gas

    Explanation: Positive rays are formed from residual gas molecules after electron impact; they do not originate directly from the anode material.