Question

Which experiment was developed on the plum pudding model of the atom?
A.Gold foil
B.Cathode ray tube
C.Emission spectra of hydrogen
D.Oil drop

Answer 1

Hint: We must have to know that the plum pudding experiment of atoms is conducted by J.J Thomson and he shows the electrons are encircling by a volume of positive charge and negatively charged. Here, the negatively charged part is considered “plum” which is electrons and the positively charged species is considered pudding. Hence, that experiment is called plum pudding model.

Complete answer:
The plum pudding model of the atom is put forward by J.J Thomson on \[1904\]. Thomson finds out the overall charge of the atom is neutral. Therefore, it should contain the positive as well as negative charge within the atom. Thus, by using this model, scientist Ernest Rutherford performed the gold foil experiment. According to this experiment, he concluded that the atom does not contain any space and it has a positively charged nucleus. And based on the gold foil experiment, he put forward the nuclear model of atoms. Thus, we can say that this gold foil experiment is developed on the plum pudding model of atoms.
Hence, option (A) is correct.
The cathode ray tube experiment was discovered by J.J Thomson, but it is not developed on the basis of the plum pudding model of atoms. Hence, the option (B) is incorrect.
The emission spectra of hydrogen is proposed by Niels Bohr and it explains the spectrum of the hydrogen. But it is not concluded by using the plum pudding model of atoms. Hence, option (C) is incorrect.
The oil drop experiment was discovered by Robert Millikan and he found electric charge in each drop. But he didn’t conclude on the basis of the plum pudding model of atoms. Hence, the option (D) is incorrect.

Hence, option (A) is correct.

Note:
As we know, the plum pudding model of atoms was discovered by the scientist J.J Thomson in the nineteenth century. In that experiment, he showed an atom with positive and negative charged species in the model and he called that experiment, “plum pudding model of atom”. Because, that structure has a resemblance with the structure of an atom and it gives an idea about the spherical shaped structure of an atom.