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	Fraction of the decaying atoms per unit time is called	A. decay atom B. decay element C. decay constant D. decay
2	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
3	For Protium, the mass defect is:	A. Infinite B. Zero C. Very large D. A few grams
4	Structure of the nucleus was explained by	A. J.J Thomson B. Bohr C. Millikan D. Rutherford
5	For an atom having atomic number Z and atomic weight A, the number of electron in an atoms	A. A - Z B. A + Z C. Z D. A
6	The emission of radiations take place in elements, having charge number greater than	A. 109 B. 82 C. 69 D. 52
7	Marie curie and Pierre curie discovered:	A. Uranium B. Polonium C. Radium D. Both (A) and (C)
8	Mass of neutron is	A. 1.67 x 10^-31kg B. 1.67 x 10^-27kg C. 9.1 x 10^-31kg D. 1.67 x 10^-19kg
9	Neutron was discovered in	A. 1915 B. 1920 C. 1925 D. 1932
10	The counter, which also provides the power to the G.M. tube is called:	A. Thin mica window B. thin glass window C. Airy window D. Wooden window