By signing in you confirm you are 18 or older, or have your parent’s or guardian’s consent.

NDA 1 2025 GAT, question 74

Topic: Chemistry

Q74

Which one of the following findings is NOT observed in Rutherford’s Nuclear Model of Atom?

  1. (a) There is a neutral centre in an atom called nucleusCorrect answer
  2. (b) Nearly all the mass of an atom resides in the nucleus
  3. (c) The electrons revolve around the nucleus in a circular path
  4. (d) The size of a nucleus is very small as compared to the size of atom

Solution.

Answer: (a) There is a neutral centre in an atom called nucleus

  1. Rutherford’s alpha-scattering experiment established a very small, dense, positively charged nucleus.
  2. The centre is therefore not neutral, making (a) incorrect.
  3. The concentration of mass and the small nuclear size are key features of his model.