Table of Contents
Chemistry Mcqs Online Test Preparation With Answers
What are cathode rays?
A. A beam of electrons emitted from the anode of a high-vacuum tube.
B. A beam of electrons emitted from the cathode of a low-vacuum tube.
C. A beam of electrons emitted from the cathode of a high-vacuum tube.
D. a beam of electrons emitted from the anode of a low-vacuum tube.
What color of fluorescence is produced when cathode rays strike the walls of glass tube?
A. Green
B. Black
C. Yellow
D. Red
Cathode rays were produced in discharged tube at
A. Low voltage
B. High Voltage
C. Ordinary Voltage
D. No voltage
In which direction, cathode rays travel in discharge tube?
A. Perpendicular to surface of cathode
B. Horizontal to surface of cathode
C. Diagonal to surface of cathode
D. Spread on surface of cathode
In cathode rays, e/m values
A. Depend upon nature of gas
B. Do not depend upon nature of gas
C. Depends on amount of air
D. None of the Above
When Alumina placed in path of cathode rays, it glows
A. Black
B. Green
C. Blue
D. Red
When tin stone placed in cathode rays, tin glows
A. Blue
B. Black
C. Green
D. Yellow
Cathode rays have _ effect
A. Reducing
B. Oxidizing
C. Catalysing
D. Hydrolysing
Free neutron decays into
A. Electron and Neutrino
B. Proton and Neutrino
C. Electron, Proton and Neutrino
D. None of the Above