Which one is not true about cathode rays ?
Correct answer: D. Cannot ionize
- A. 9.11 x 10^-31 Kg
- B. Cast shadow
- C. Heat up the platinum foil
- D. Cannot ionize
Explanation
Cathode rays can ionize gases, so the statement that they cannot ionize is false. They also have the electron's mass, approximately 9.11 x 10^-31 kg, produce shadows and heat a platinum foil. Students may choose a because it is written as a number rather than a sentence, but it is a correct property of the electron particles in cathode rays.
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________________?