ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQ`s Test

Sr.#	Question	Answer
1	The diameter of an atom is of the order	A. 10^-125m B. 10^-11m C. 10^-10m D. 10^-9m
2	The half life of radioactive substances depends upon	A. amount of substance B. energy of substance C. state of substance D. temperature of substance
3	After alpha decay the atomic number of the atom	A. increase by four B. decreases by two C. increases by two D. decrease by four
4	Nuclei that have the same charge number but different mass number are called	A. isotones B. isomers C. isotopes D. isobars
5	The energy is found from Einstein's mass energy relation is called	A. binding energy of electron B. binding energy of proton C. binding energy of neutron D. binding energy of nucleus
6	The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains	A. 3 more neutrons B. 3 more electrons C. 3 more protons D. 3 more ions
7	For an atom having atomic number Z and atomic weight A, the charge on the nucleus is	A. A - Z B. A + Z C. Z D. A
8	Proton was discovered by Rutherford in	A. 1915 B. 1906 C. 1910 D. 1920
9	The penetration power ofβ-particle is	A. zero B. less thanα-particle C. equal toα-particle D. greater thanα-particle
10	Nucleus consists of	A. proton and neutron B. protons and electron C. electron and neutron D. protons only