Question

Which scientist and discovery are not correctly paired?
A. Millikan/neutron
B. Rutherford/nucleus
C. Charles/relationship between temperature and pressure
D. Mendeleev/periodic table
E. J J Thomson/Rutherford

Answer 1

Hint: Various experiments were performed by the scientists to determine the structure of an atom. First atomic theory was given by John Dalton after that discussions started regarding the atoms. Let us discuss the options and match them correctly.

Complete step by step answer:
> Millikan performed an oil drop experiment, in this experiment a small charged oil droplet passed into an electric field through a hole. The strength of the electric field is varied and the charge of the oil droplet is determined. The charge of the oil droplet came into multiples of the charge of an electron. So, the scientist and discovery are not correctly paired in option (A). So, option (A) is incorrect.
> Rutherford performed a gold foil experiment, in this experiment alpha particles bombarded on the gold foil. Based on the observation of the experiment, Rutherford suggested that the presence of a small nucleus at the center of the atom. So, the scientist and discovery are correctly paired in option (B). So, option (B) is correct.
> Charles law said that at constant pressure, according to the ideal gas equation, the volume of a gas is directly proportional to the temperature of the gas. So, the scientist and discovery are not correctly paired in option (C). So, option (C) is incorrect.
> First of all, Mendeleev arranged the elements in increasing order of the atomic mass in a table. The table was known as the Mendeleev periodic table however the periodic table was rejected because the increase in atomic mass is not regular. The elements were again rearranged according to their atomic number and the new table is known as the modern periodic table. So, the scientist and discovery are correctly paired in option (D). So, option (D) is correct.
> J J Thomson and Rutherford both are scientists so, the scientist and discovery are not correctly paired in option (E). So, option (E) is incorrect.
Therefore, options (A) Mullikan/neutron, (C) Charles/relationship between temperature and pressure, and (E) J J Thomson/Rutherford, are incorrect.

So, the incorrect answers are “Option A, C and E”.

Note: Millikan determined the charge of electrons. Rutherford discovered the nucleus and Charles' law determined the relation between temperature and volume. The periodic table was given by Mendeleev.