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 number of isotopes of hydrogen are	A. 2 B. 1 C. 3 D. 4
2	The total charge of any nucleus is given as	A. Ze² B. Z²e C. Z/e D. Ze
3	If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by	A. -4 B. 4 C. 2 D. 1
4	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
5	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
6	The figure 1.007276μ shows the mass of an:	A. Atom B. Positron C. Electron D. Neutron
7	Structure of the nucleus was explained by	A. J.J Thomson B. Bohr C. Millikan D. Rutherford
8	The nuclei of an element having the same charge number but different mass numbers are called:	A. Isobars B. Isotopes C. Isomers D. Isobaric
9	In radioactive decay, the new element which is formed due to the disintegration of original element is called	A. element B. daughter element C. parent element D. none of these
10	The unit of decay constant is:	A. Second B. Metre C. Hour D. Year