Q.14:- For the following statements, write T for True and F for False.
(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
(c) The mass of an electron is about 1/2000 times that of proton.
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.
(a) F: Because it was not proposed by J.J. Thomson.
(b) F: Because neutron is an independent sub-atomic particle.
(c) T: Because it is a fact known from experiments.
(d) F: Because tincture iodine is a solution of ordinary iodine in alcohol.