Download App

Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
Goldstein’s experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of:
  1. Electron.
  2. Proton.
  3. Nucleus.
  4. Neutron.
✓

Answer

  1. Proton.

Explanation:

Goldstein’s experiment, which involved passing high-voltage electricity through gases at very low pressure, resulted in the discovery of protons.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Structure of the Atom→Structure of the Atom — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Water stored in a dam possesses:

  1. No energy.
  2. Electrical energy.
  3. Kinetic energy.
  4. Potential energy.
→
A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:
→
Which of the following energy is absorbed during the change of state of a substance:
→
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros?
  1. 5kHz
  2. 25Hz
  3. 10Hz
  4. 15,000Hz
→
A person standing between two vertical cliffs and 640m away from the nearest cliff shouted. He heard the first echo after 4 seconds and the second echo 3 seconds later. What is the distance between the cliffs?
→
The S.I. units of thrust is same as that of:
→
To find the height of a building, a student is following the steps as given below. The sequence of the steps are:
  1. Drops a stone from the top of the building.
  2. Simultaneously, starts a clock.
  3. Stops the clock as the stone lands on the ground.
  4. Follows the relation $\text{h}=\frac{1}{5}\text{gt}^2.$
→
What is the unit for FORCE?
→
Milk of Magnesia is:
→
Which of the following cannot be separated from air by the process of fractional distillation?
  1. Oxygen.
  2. Argon.
  3. Hydrogen.
  4. Nitrogen.
→